NYC Site Connection Application: Process, Requirements & DEP Approval

Connecting a development site to New York City’s water and sewer infrastructure is an important part of the development and permitting process. For projects that require new or modified sewer connections, the design team must demonstrate that the proposed connection and resulting stormwater and sanitary flows can be accommodated in accordance with applicable requirements.

For many projects, this involves preparing a Site Connection Proposal and obtaining sewer certification through the New York City Department of Environmental Protection (DEP).

The process requires coordination between property owners, developers, Professional Engineers or Registered Architects, Licensed Master Plumbers, DEP, the Department of Buildings, and other project stakeholders.

Understanding the NYC site connection application process early can help project teams identify documentation requirements, evaluate existing infrastructure, coordinate site drainage, and reduce avoidable delays.

The process has also become more streamlined. NYC DEP now allows Site Connection Proposals and House Connection Proposals to be submitted and tracked electronically through its Permit and Review Information System (PARIS). DEP announced this online process in May 2025.

What Is an NYC Site Connection Application?

An NYC site connection application is part of the process used to obtain approval for proposed connections between a development and the City’s sewer infrastructure.

For sewer connections, DEP uses two primary proposal types:

• House Connection Proposal (HCP)

• Site Connection Proposal (SCP)

The appropriate application depends on the type and characteristics of the development.

According to NYC DEP, a Site Connection Proposal is generally required for developments that do not qualify for a House Connection Proposal.

A site connection submission can address issues such as:

• Sanitary flow

• Stormwater flow

• Proposed sewer connections

• Existing sewer infrastructure

• Site drainage

• Connection locations

• Drainage calculations

• Required site plans

• Applicable approvals and documentation

What Is a Site Connection Proposal in NYC?

A Site Connection Proposal (SCP) is a submission used to obtain sewer certification for developments that do not meet the requirements for a House Connection Proposal.

NYC DEP states that Site Connection Proposals must be prepared by or under the supervision of a New York State-licensed Professional Engineer or Registered Architect.

The proposal demonstrates that the proposed development and its stormwater and sanitary flows can be appropriately connected to the applicable sewer infrastructure.

Site Connection Proposal vs. House Connection Proposal

The two proposal types should not be treated as interchangeable.

A House Connection Proposal generally applies to certain one-, two-, or three-family fee-simple residential properties that meet specific criteria, including no commercial use, individual connections to existing sewers fronting the property, and no common drainage facilities.

A Site Connection Proposal is used for other developments that do not meet those criteria.

For a commercial, multifamily, mixed-use, or other development, the project team should determine the appropriate proposal type based on the actual site and project conditions.

When Is Sewer Certification Required in NYC?

NYC DEP states that sewer certification is required for a new connection to:

• A City sewer

• A private sewer

• A private drain

• A septic system

• An approved outlet

Certification may also be required when an alteration or renovation increases the sanitary or stormwater flow generated by the site.

The specific requirements can depend on the project and should be evaluated by the project’s design professionals.

Who Can Prepare an NYC Site Connection Proposal?

Site Connection Proposals must be prepared by or under the supervision of a Professional Engineer licensed in New York State or a Registered Architect licensed in New York State.

This makes early coordination with the project’s engineering or architectural team important.

For many development projects, the site connection work intersects directly with civil, plumbing, drainage, stormwater, and MEP engineering considerations.

The Current NYC DEP PARIS Process

The NYC DEP Permit and Review Information System (PARIS) is the City’s online system for water and sewer-related applications.

DEP now allows Site Connection Proposals and House Connection Proposals to be:

• Submitted online

• Supported with uploaded documents and plans

• Tracked through the system

• Reviewed through the electronic process

• Communicated with through the system

DEP announced the online SCP/HCP process in May 2025 as part of an effort to streamline water and sewer permitting and improve communication with applicants.

This is an important update to older descriptions of the NYC site connection process.

Step 1: Evaluate the Existing Site Infrastructure

Before preparing the application, the project team should understand the existing utility and drainage conditions.

Depending on the project, this can involve reviewing:

• Existing sewer infrastructure

• Sewer records

• Existing water infrastructure

• Existing drainage

• Property boundaries

• Site grades

• Existing connections

• Utility locations

• Existing building conditions

NYC DEP provides a records-request process through PARIS for sewer drainage plans, water and sewer maps, sewer as-built drawings, and other records.

Step 2: Determine the Appropriate Connection Strategy

The engineering team should establish how the proposed development will connect to the available infrastructure.

This can involve evaluating:

• Existing sewer locations

• Connection points

• Proposed building use

• Sanitary flow

• Stormwater flow

• Site grading

• Available capacity

• Proposed drainage systems

The connection strategy should be established before finalizing the site design.

Step 3: Calculate Sanitary and Stormwater Flows

Flow calculations are an important part of the site connection process.

The project team may need to evaluate:

• Peak sanitary flow

• Developed site storm flow

• Allowable storm release

• Drainage areas

• Detention requirements

• Proposed discharge rates

NYC DEP provides worksheets and guidance for calculations including sanitary flow rates and maximum release rates.

Step 4: Develop the Site Connection Design

The design documentation should show how the proposed site will connect to the applicable infrastructure.

Depending on the project, documentation may address:

• Site plan

• Existing utilities

• Proposed connections

• Sewer locations

• Drainage systems

• Stormwater management

• Connection details

• Flow calculations

• Applicable supporting documents

The exact submission requirements depend on the project type and proposal.

Step 5: Prepare the Site Connection Proposal

Once the engineering information is developed, the Professional Engineer or Registered Architect can prepare the Site Connection Proposal.

The proposal should be complete and internally coordinated before submission.

Incomplete information can result in review comments and additional submission cycles.

Step 6: Submit Through PARIS

Site and House Connection Proposals should now be submitted electronically through PARIS. NYC DEP states that paper and email submissions are no longer accepted for these proposals.

The applicant must establish the appropriate PARIS account and ensure that required professional-license information is current.

DEP’s PARIS guidance explains that the system allows licensed professionals to submit water and sewer applications electronically.

Step 7: DEP Reviews the Submission

After submission, DEP reviews the application and supporting information.

Review may identify:

• Missing information

• Technical questions

• Calculation issues

• Documentation problems

• Design concerns

• Required revisions

The project team should monitor the application and respond to comments within the required process.

Step 8: Respond to DEP Comments

Agency comments should be reviewed carefully.

The response may require:

• Revised calculations

• Updated drawings

• Clarifications

• Additional documentation

• Revised drainage information

• Design modifications

A coordinated response is important because changes to one part of the submission can affect other documents.

Step 9: Obtain Sewer Certification

Once the Site Connection Proposal satisfies the applicable requirements, DEP can issue the sewer certification.

Sewer certification establishes that the proposed connection is acceptable from the sewer-availability perspective.

It is important to distinguish sewer certification from the later permit to perform the physical sewer connection work.

NYC DEP explains that the subsequent sewer connection permit authorizes the actual connection work.

Step 10: Obtain the Appropriate Sewer Connection Permit

Approval of the Site Connection Proposal does not necessarily mean that construction crews can immediately perform the connection.

DEP requires permits for work involving connections to the City’s sewer system.

NYC DEP states that all work performed on sewer connections requires a permit.

The permit requirements depend on the specific work being performed and the responsible licensed professional.

Step 11: Coordinate With the Plumbing Contractor

The engineering and permitting process must eventually connect to the construction process.

For sewer connection work, the Licensed Master Plumber has specific responsibilities under DEP’s permitting requirements.

For example, NYC DEP states that a Licensed Master Plumber must file the permit application for installing single or multiple premise sewer house connections after the applicable Site or House Connection Proposal has been certified.

Clear coordination between the engineer, owner, plumber, contractor, and agency can help prevent installation-stage problems.

Step 12: Complete Required Inspections

After the connection work is installed, required inspections and approvals must be completed.

The exact inspection requirements depend on the type of work and permit.

The project should not assume that design approval alone completes the connection process.

Understanding NYC Water Connection Requirements

Water connections are governed through a separate set of DEP requirements.

DEP provides procedures for:

• Water taps

• Wet connections

• Water service lines

• Repairs

• Relays

• Plugs

• Fire services

• Domestic services

Water-service applications and permits are also supported through PARIS.

Water connection requirements should therefore be evaluated separately from sewer certification requirements.

NYC Sewer Connection vs. Water Connection

These processes should not be treated as one identical application.

Sewer

May involve:

• Sewer certification

• Site Connection Proposal

• House Connection Proposal

• Sewer connection permit

• Stormwater and sanitary flow

• DEP sewer requirements

Water

May involve:

• Tap

• Wet connection

• Water service

• Backflow requirements

• Water-service permit

• DEP water requirements

The appropriate process depends on the proposed work.

Stormwater Management and Site Connections

Stormwater is an important consideration in many site connection projects.

Development can change:

• Impervious area

• Runoff

• Drainage patterns

• Peak flow

• Storage requirements

• Release rates

The project team may therefore need to evaluate stormwater management as part of the connection strategy.

NYC DEP provides a New York City Stormwater Manual and related guidance for calculating required storage volumes and release rates for applicable proposals.

Why Site Grading Matters

Site grading affects how stormwater moves across the property.

Poorly coordinated grading can create:

• Drainage problems

• Ponding

• Incorrect connection elevations

• Conflicts with utilities

• Problems with detention systems

Site connection design should therefore be coordinated with the broader site and civil design.

Sewer Capacity and Site Connection Planning

The availability and adequacy of existing sewer infrastructure are important considerations.

The project team may need to evaluate:

• Existing sewer size

• Existing connection

• Sanitary demand

• Stormwater flow

• Proposed development

• Connection location

• Available capacity

DEP’s sewer certification process is specifically intended to determine whether the existing abutting sewer can receive the proposed site’s storm and sanitary flow.

What Documents May Be Required?

Required documentation varies by project.

Depending on the proposal, documentation can include:

• Site plans

• Drainage information

• Flow calculations

• Connection details

• Supporting engineering documentation

• Owner authorization

• Existing utility information

• Applicable legal documentation

• Project-specific supporting forms

NYC DEP’s Site Connection Proposal requirements should be checked for the specific project rather than relying on a generic checklist.

Owner Authorization

NYC DEP requires an owner or developer authorization form for Site Connection Proposal submissions.

The form provides required owner information and must be uploaded as part of the submission.

This is one example of why the application should be assembled as a complete package before submission.

Existing Sewer Records

Existing infrastructure information can be critical when preparing a site connection proposal.

DEP provides a process for requesting:

• Sewer drainage plans

• Water and sewer maps

• Sewer as-built drawings

• Tap records

• Sewer cards

These records can help the design team understand existing conditions before finalizing the proposed connection.

When a Field Investigation May Be Necessary

Existing records may not always provide enough information.

DEP’s sewer certification guidance indicates that a Field Investigation may be necessary when there is no existing record of the relevant sewer infrastructure.

A field investigation can help the design team establish actual conditions before proceeding with the connection design.

Pre-Submission Meetings

Some projects may benefit from a pre-submittal meeting with DEP.

This can be particularly useful when the project involves:

• Complex site conditions

• Unusual connection arrangements

• Significant drainage issues

• Technical questions

• Complicated proposals

DEP provides a process for requesting pre-submittal meetings for Site Connection Proposals and drainage proposals.

Self-Certification for Eligible Projects

NYC DEP and the NYC Department of Buildings have a self-certification program for certain eligible Site Connection Proposals.

Self-certification is not available for every project.

Applications must meet the applicable eligibility requirements, and submissions that do not qualify can be rejected and moved into the regular certification process.

This means project teams should determine eligibility before assuming that self-certification will accelerate their application.

Common Reasons NYC Site Connection Applications Are Delayed

Incomplete Documentation

Missing information can result in review comments and additional submission cycles.

Incorrect Calculations

Flow calculations and drainage information should be coordinated and checked before submission.

Inconsistent Drawings

The site plan, drainage design, calculations, and connection details should tell the same story.

Inadequate Existing-Condition Information

Designing without sufficient knowledge of existing infrastructure can lead to revisions.

Poor Coordination Between Disciplines

Civil, architectural, MEP, plumbing, structural, and site-design decisions can affect the connection proposal.

Slow Responses to Agency Comments

Unresolved comments can extend the overall review process.

Not Accounting for Site Changes

Changes in building size, occupancy, impervious area, or drainage can affect the connection design.

Confusing Certification With Construction Authorization

Sewer certification and the permit to perform connection work are separate steps.

How to Streamline the NYC Site Connection Process

The most effective way to reduce avoidable delays is to address potential issues before submission.

A practical approach includes:

• Review existing utility records early

• Determine the appropriate proposal type

• Establish sanitary and stormwater flows

• Coordinate the site design

• Prepare complete drawings

• Verify calculations

• Confirm required documentation

• Check professional licensing requirements

• Submit through PARIS

• Monitor agency comments

• Respond promptly

• Coordinate certification with subsequent permitting

The goal is not simply to submit quickly.

The goal is to submit accurately and completely the first time.

How MEP Engineers Support Site Connection Applications

Although site connection work is closely connected to civil and plumbing design, MEP engineers can play an important role in coordinating the building’s utility requirements.

Depending on the project, engineering support may include:

• Plumbing calculations

• Domestic water requirements

• Sanitary drainage

• Stormwater coordination

• Equipment loads

• Utility requirements

• Site utility coordination

• Building-system integration

Early engineering involvement can help ensure that utility requirements are considered before the final site connection strategy is established.

Coordinate Site Connections With Building Design

The site connection cannot be designed independently of the building.

Changes to the building can affect:

• Plumbing demand

• Sanitary flow

• Water demand

• Stormwater

• Utility capacity

• Equipment

• Service locations

This makes coordination between the building engineer, architect, civil/site designer, owner, and contractor important.

Coordinate Site Connections With MEP Systems

MEP coordination can help align:

• Building plumbing

• Water service

• Sewer service

• Stormwater

• Mechanical equipment

• Fire protection

• Electrical utility requirements

A coordinated design reduces the likelihood that site utility requirements will conflict with the building’s internal systems.

Site Connection Applications for Commercial Developments

Commercial developments may have more complex utility demands than small residential properties.

Potential considerations include:

• Higher sanitary flows

• Larger water services

• Commercial kitchens

• Increased stormwater

• Multiple buildings

• Specialized equipment

• Higher occupancy

The appropriate engineering and permitting strategy should be established based on the actual development.

Site Connection Applications for Multifamily Projects

Multifamily developments can involve:

• Multiple dwelling units

• Significant domestic-water demand

• Sanitary flow

• Multiple buildings

• Stormwater management

• Common drainage systems

Because of the scale and complexity, early utility coordination can be particularly valuable.

Site Connection Applications for New Construction

For new construction, utility connections should be considered early in the design process.

Early planning can help determine:

• Available utility infrastructure

• Connection locations

• Service sizes

• Site grades

• Drainage strategy

• Utility corridors

This information can influence the architectural, civil, structural, and MEP design.

Site Connection Applications for Renovations

Renovation projects may require a different approach.

Existing connections may be:

• Reused

• Modified

• Replaced

• Abandoned

The appropriate strategy depends on the existing conditions and proposed changes.

DEP has specific requirements for reuse, repair, relay, plugging, and installation of sewer connections.

Planning for Utility Coordination Early

Utility coordination should not be treated as a final permitting task.

It can influence:

• Site layout

• Building location

• Mechanical rooms

• Plumbing risers

• Utility corridors

• Drainage

• Equipment

• Construction sequencing

Addressing these issues early can reduce redesign later.

NYC Site Connection Application Checklist

Before submitting a Site Connection Proposal, the project team should confirm:

Project Information

• Project address

• Borough

• Block and lot information

• Building information

• Project description

Existing Conditions

• Sewer records reviewed

• Existing utilities identified

• Existing connections reviewed

• Site conditions documented

Engineering

• Sanitary flow calculated

• Stormwater flow calculated

• Connection strategy established

• Site plan coordinated

• Drainage design coordinated

Documentation

• Required plans prepared

• Supporting calculations completed

• Owner authorization completed

• Required professional information verified

• Project-specific documents assembled

Submission

• PARIS account established

• Professional license information current

• Application reviewed

• Documents uploaded

• Submission completed

Review

• DEP comments monitored

• Responses coordinated

• Revisions documented

• Certification obtained

Construction

• Appropriate connection permit obtained

• Licensed professionals coordinated

• Installation completed

• Required inspections completed

• Final approvals obtained

How to Prepare a Stronger Site Connection Proposal

A strong proposal should be:

Complete

All required information should be included.

Consistent

Plans and calculations should agree.

Site-specific

The design should reflect actual existing and proposed conditions.

Code-compliant

The submission should address applicable requirements.

Professionally prepared

The proposal should be prepared and supervised by the appropriate licensed professional.

Responsive

Agency comments should be addressed clearly and efficiently.

Why Early Engineering Involvement Matters

Waiting until the end of the design process to investigate utility connections can create avoidable problems.

Early engineering can identify:

• Utility constraints

• Connection limitations

• Drainage requirements

• Water-service requirements

• Sewer capacity concerns

• Site-design conflicts

These findings can be incorporated into the building design while changes are still manageable.

How Digital Submission Has Changed the Process

The move to PARIS has made the submission and tracking process more centralized.

DEP states that Site Connection Proposals and House Connection Proposals can now be submitted, tracked, and communicated through the system.

This can improve visibility into application status, but it does not eliminate the need for accurate engineering documentation.

PARIS makes submission more efficient; it does not replace the technical work required to prepare a compliant proposal.

The Importance of Accurate Site Connection Documentation

The quality of the submission can directly affect how efficiently the application moves through review.

A coordinated package should make it easy for the reviewing agency to understand:

• What exists

• What is proposed

• Where the connection occurs

• How much flow is generated

• How stormwater is managed

• Which supporting documents apply

Clear documentation reduces ambiguity and makes technical review more straightforward.

Site Connection Approval and Construction Planning

Site connection approval should be incorporated into the broader project schedule.

The project team should coordinate:

• Engineering

• DEP review

• Permits

• Procurement

• Site work

• Utility installation

• Inspections

• Building construction

Utility work that is not planned alongside the overall construction schedule can become a critical-path issue.

Common Mistakes to Avoid

Starting the Application Too Late

Utility approvals can affect the broader project schedule.

Assuming Existing Records Are Complete

Existing infrastructure should be verified where necessary.

Using Generic Site Plans

Site connection documentation needs to reflect the actual project.

Failing to Coordinate Drainage

Stormwater and sanitary systems should be evaluated together with the site design.

Ignoring Future Building Changes

Changes in building area or use can affect utility demands.

Submitting Before Internal Review

A complete internal quality-control review can identify errors before agency submission.

Assuming PARIS Eliminates Technical Requirements

PARIS changes the submission process; it does not eliminate the underlying design and regulatory requirements.

Confusing Sewer Certification With a Connection Permit

Certification and construction authorization are distinct steps.

A Practical NYC Site Connection Application Workflow

Step 1: Review the Project

Understand the building, site, occupancy, and proposed development.

Step 2: Research Existing Infrastructure

Obtain available sewer, water, and utility records.

Step 3: Determine the Required Proposal

Establish whether the project requires a Site Connection Proposal or another applicable process.

Step 4: Calculate Flows

Evaluate sanitary and stormwater requirements.

Step 5: Develop the Connection Design

Coordinate site, drainage, plumbing, and utility requirements.

Step 6: Prepare Documentation

Complete the plans, calculations, forms, and supporting materials.

Step 7: Review the Submission

Perform an internal technical and documentation review.

Step 8: Submit Through PARIS

Upload the required materials through the current DEP process.

Step 9: Respond to DEP Review

Address comments and provide revisions where required.

Step 10: Obtain Certification

Receive the applicable sewer certification or approval.

Step 11: Obtain Construction Permits

Complete the separate permitting requirements for the physical connection work.

Step 12: Coordinate Installation and Inspection

Work with the responsible licensed professionals and contractors.

Step 13: Complete Final Approvals

Confirm that the required inspections and approvals have been completed.

How Daymark Engineers Can Support Site Connection Projects

Site connection applications require more than filling out a form.

The underlying engineering must establish how the proposed development interacts with existing infrastructure and how water, sanitary, stormwater, and other building-system requirements are coordinated.

Daymark Engineers provides MEP-FP engineering, BIM Services, Energy Modeling, Value Engineering, Peer Review, Drafting Services, and related engineering services for building projects.

For projects involving site connections, engineering support can help coordinate building plumbing, utility requirements, drainage considerations, site conditions, and broader MEP systems.

The team can also support project coordination where site utility requirements intersect with architectural and building-system design.

If your New York development requires a Site Connection Proposal, sewer certification, or coordinated MEP engineering, Daymark Engineers can help evaluate the project requirements and develop the technical documentation needed to support the approval process.

Frequently Asked Questions About NYC Site Connection Applications

What Is an NYC Site Connection Application?

An NYC site connection application is part of the process for obtaining approval for proposed connections between a development and applicable water or sewer infrastructure. For sewer certification, the applicable proposal may be a Site Connection Proposal or House Connection Proposal.

What Is a Site Connection Proposal in NYC?

A Site Connection Proposal is used to obtain sewer certification for developments that do not qualify for a House Connection Proposal. NYC DEP requires Site Connection Proposals to be prepared by or under the supervision of a New York State-licensed Professional Engineer or Registered Architect.

What Is Sewer Certification?

Sewer certification is the process used to establish that the applicable sewer infrastructure can receive the proposed site’s storm and sanitary flow.

When Is Sewer Certification Required in NYC?

It is generally required for new connections to a City sewer, private sewer, private drain, septic system, or approved outlet. It may also be required for certain alterations that increase sanitary or stormwater flow.

What Is the Difference Between a Site Connection Proposal and House Connection Proposal?

A House Connection Proposal applies to certain one-, two-, or three-family fee-simple residential properties that meet specific criteria. A Site Connection Proposal generally applies to other developments.

Who Can Prepare a Site Connection Proposal?

A Site Connection Proposal must be prepared by or under the supervision of a New York State-licensed Professional Engineer or Registered Architect.

Where Are NYC Site Connection Proposals Submitted?

NYC DEP now accepts Site Connection Proposals and House Connection Proposals electronically through its Permit and Review Information System, or PARIS.

Can I Submit a Site Connection Proposal by Email?

NYC DEP states that Site and House Connection Proposals should be submitted electronically through PARIS and that paper or email submissions are no longer accepted for these proposals.

What Is PARIS?

PARIS stands for Permit and Review Information System. It is NYC DEP’s online system for submitting and managing water and sewer-related applications.

Can I Track My Site Connection Application Online?

Yes. DEP’s online process allows applicants to submit and track Site Connection Proposals and House Connection Proposals through PARIS.

What Information Is Needed for a Site Connection Proposal?

Requirements vary by project, but may include site plans, existing infrastructure information, sanitary and stormwater calculations, connection details, owner authorization, and other project-specific documentation.

Do I Need Existing Sewer Records?

Existing sewer records can be important when preparing a proposal. DEP provides a records-request process through PARIS for sewer drainage plans, water and sewer maps, sewer as-built drawings, and other records.

What If There Is No Record of the Existing Sewer?

DEP’s guidance indicates that a Field Investigation may be required when there is no existing record of the relevant sewer infrastructure.

What Are the Most Common Causes of Site Connection Delays?

Common issues include incomplete documentation, incorrect calculations, insufficient existing-condition information, inconsistent plans, unresolved agency comments, and poor coordination between project disciplines.

How Long Does an NYC Site Connection Application Take?

There is no universal approval timeline. Processing time depends on project complexity, completeness, review requirements, agency workload, and whether revisions or additional information are required. DEP has also noted periods of high Site Connection Proposal request volume that can lead to longer response times.

Can a Site Connection Proposal Be Self-Certified?

Some projects may qualify for DEP’s self-certification program, but eligibility is limited to projects meeting specific criteria. Applications that do not meet the requirements can be rejected and required to follow the regular certification process.

What Is a Pre-Submittal Meeting?

A pre-submittal meeting allows the project team to discuss technical questions or complex application conditions with DEP before submission. DEP provides a process for requesting such meetings for applicable Site Connection Proposals and drainage proposals.

Is a Sewer Certification the Same as a Sewer Connection Permit?

No. Sewer certification establishes the acceptability of the proposed connection from the certification perspective. The subsequent sewer connection permit authorizes the physical connection work.

Who Applies for a Sewer Connection Permit?

The responsible applicant depends on the type of work. NYC DEP specifies Licensed Master Plumber responsibilities for various sewer connection permits.

Does a Site Connection Proposal Cover Water Connections?

Not necessarily. Water and sewer connection processes have separate DEP requirements. Water-service work can involve separate applications for taps, wet connections, service lines, repairs, relays, and other activities.

Does Stormwater Affect a Site Connection Proposal?

Yes. Stormwater flow and management can be important components of the site connection design. Applicable proposals may require calculations addressing developed site storm flow, allowable release rates, and detention or other stormwater-management measures.

Why Are Sanitary Flow Calculations Important?

Sanitary flow calculations help establish the expected discharge from the proposed development and support evaluation of the site’s connection to the sewer infrastructure.

Why Is Site Grading Important?

Grading affects drainage patterns and stormwater movement. It can also affect connection elevations, detention systems, and utility coordination.

Can Renovation Projects Require Sewer Certification?

Yes. DEP states that sewer certification may be required for certain alterations or renovations that increase sanitary or stormwater flow generated by the site.

Can an Existing Sewer Connection Be Reused?

Potentially, but specific DEP requirements apply. DEP provides documentation requirements for reuse of existing sewer connections.

What Happens After Sewer Certification?

The project may need to proceed through the applicable sewer connection permitting process before the physical connection work can be performed. Required inspections and approvals must also be completed.

Why Should an Engineer Be Involved Early?

Early engineering involvement can help identify existing infrastructure constraints, calculate flows, coordinate drainage and plumbing requirements, and prepare the technical documentation before submission.

Can MEP Engineering Support a Site Connection Proposal?

Yes. MEP engineering can support plumbing, water, sanitary, drainage, utility, equipment, and building-system coordination. The specific professional responsibilities depend on the project and applicable requirements.

How Can I Reduce Delays in the NYC Site Connection Process?

The best approach is to:

• Review existing infrastructure early

• Confirm the correct proposal type

• Prepare accurate calculations

• Coordinate drawings

• Assemble complete documentation

• Submit through PARIS

• Monitor comments

• Respond promptly

• Coordinate certification with construction permits

What Is the Best Way to Prepare an NYC Site Connection Application?

Start with existing-condition research, determine the applicable approval pathway, develop coordinated engineering documentation, verify calculations, and submit a complete application through PARIS.

Can Daymark Engineers Help With NYC Site Connection Projects?

Daymark Engineers provides MEP-FP engineering and related building-system engineering services that can support projects involving utility, plumbing, drainage, and broader MEP coordination.

Can Daymark Engineers Help With Sewer Certification?

Daymark can provide engineering support for projects requiring coordinated site and building-system documentation. The specific scope and professional responsibilities should be established based on the project requirements.

Does Daymark Engineers Work on New York Projects?

Yes. Daymark Engineers identifies New York among its project locations and provides engineering services for building projects requiring MEP-FP and related design support.