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Water & Sewer Forms
We are responsible for approving the construction of private water and sewer mains, connections to the water and sewer system, repair work on the system, and discharges into the sewer system. This section includes general information and detailed application requirements to assist property owners, Professional Engineers, Registered Architects, and Licensed Master Plumbers in obtaining required approvals, permits and inspections.
For quick access to some common forms and documents, visit the Document Portal and select “Water & Sewer” as a topic.
Permit and Review Information System
The Permit and Review Information System (PARIS) allows Licensed Master Plumbers to submit applications and receive approvals (or objections) and permits electronically.
Request Water & Sewer Records
Sewer Certification & Connection Permits
A sewer certification is required for any new connection to a City sewer, a private sewer, a private drain, a septic system, or an approved outlet. Sewer certification may also be required for an alteration or renovation that increases the sanitary and/or storm flow generated on the site.
Private Sewers & Drains
This section includes requirements, application forms and guidelines for the construction of private sewers and private drains. This information is applicable to property owners, professional engineers and registered architects.
Drainage Proposals & Amended Drainage Plans
Learn about the steps for submitting drainage proposals and amended drainage plans to DEP.
Dewatering, Pretreatment, & Scavenger Waste
Businesses that need to discharge into New York City’s sewer system must comply with the Sewer Use Regulations.
Water Service Connections & Private Water Mains
Use this section to find information about permits to tap, plug, or repair/relay water service lines and applications for building private water mains.
Backflow Prevention Devices
Backflow Prevention Devices prevent contaminated water or chemicals from flowing back into the drinking water supply if there is a sudden or unexpected change in water pressure. DEP requires certain businesses to install and operate approved backflow prevention assemblies.
Drilling and Excavation
This section includes drilling and excavation permit guidelines for projects within the five boroughs and information for how to submit a pre-application assessment and schedule a preliminary meeting. This information is applicable to property owners, professional engineers, and registered architects.
Document Portal
Search for reports and other documents produced by the Department of Environmental Protection.
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