Environmental engineers review and permit every subdivision plan and new subsurface sewage treatment system (SSTS) for commercial and residential use to ensure that there is adequate sewage disposal and drinking water.  They perform field site visits throughout the construction phase to verify that the plans are being followed.

Much of the land in northern Westchester County is located on the watershed of the City of New York.  As part of the 1997 watershed Memorandum of Agreement, the New York City Department of Environmental Protection has delegated its approval authority for certain sewage treatment systems to the Westchester County Health Department.  The permitting program began in mid-November of 1997 and was renewed for another five years in 2000.
 

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On-Site Wastewater Treatment System (aka Septic System) and/or Well Applications Regulations Westchester County Health Department Rules and Regulations for the Design and Construction of Residential Subsurface Sewage Treatment System Westchester County Sanitary Code: Article VIII – Sewerage, Sewage and Refuse (effective Nov. 7, 2008)            View all changes to Article VIII here.          View Dept. of Health notice to Building Depts.          View Dept. of Health notice to Design Professionals          View Dept. of Health notice to Septic Contractors Article VII – Water Supply Article XXI – Fees Westchester County Sanitary Code. PDF (updated August 2008)   Guidelines Comprehensive On-Site Wastewater Treatment and Well Developmental Plan     Guidelines/Checklist – Construction Approval (updated May 2009) Comprehensive On-Site Wastewater Treatment and Well Developmental Plan     Guidelines/Checklist – Certificate of Construction Compliance (updated August 2009) Inspections Guidelines for Irrigation Well Construction Guidelines for Replacement Well Construction   Forms Construction Approval Application (updated May 2009) Letter of Authorization Certificate of Resolution for Authorization (corporation) Design Data Sheet – Separate Sewage Treatment System Certificate of Construction Compliance (updated August 2009) Well Completion Report Guaranty of Subsurface Sewage Treatment System   Requests for Inspections Request for Site Evaluation Inspection (updated May 2009) Request for Open Works Inspection   Remediation OWTS Remediation Approval Checklist (updated August 2009) OWTS Remediation Certificate of Construction Compliance Checklist   OWTS Remediation  Approval Application OWTS Remediation Certificate of Construction Compliance Application (updated August 2009) Guaranty of On-Site Wastewater Treatment System Remediation   Change of Use Change of Use Application Form   Realty Subdivision Applications Realty Subdivision Application Status Tracking click here   Regulations Westchester County Sanitary Code:       Article X-Realty Subdivision       Article XXI-Fees       Westchester County Sanitary Code. PDF (updated August 2008)   Guidelines Guidelines for Filing Applications for Realty Subdivisions Subdivision and Utility Review Fees Sanitary Sewer  (New & Existing) Low Pressure Sanitary Sewer Sanitary Pump Station Leakage Testing Procedure Standard for Low Pressure Air Test Procedure TIP-15   Forms Application and Information relating to Realty Subdivisions Certificate of Resolution for Authorization (corporation) Design Data Sheet-Separate Sewage Treatment System Application for Approval for Public Water Supply Improvement (DOH-348) Application for Approval for Wastewater Disposal System (BSP-5) Chapter 30 – Design of Sewers (Sewer Main Extensions) Chapter 40 – Sewage Pumping Stations Water Main Pressure/Leakage Test Air Test Data Sheet Vacuum Test Data Sheet   Record Searches  Record search guidance Request for approved Well and/or Subsurface Sewage Treatment System records   File Review/FOIL request   Well Decommissioning/Abandonment Procedure View/print memo: Well Abandonment/Decommissioning New York State Department of Health Fact Sheet #4 Decommissioning     Abandoned Wells   Septic System Abandonment Procedure View/print memo: Guidelines for Abandoning Subsurface Sewage Treatment Systems (SSTS)   Looking for a Design Professional (as of August 2008) View the list of professional engineers and registered architects      ePlan filing system   Licensed and registered professional engineers and architects can have plans approved by the Health Department by using the new e-filing system.  ID's and passwords are required to file and then access plans. More aUse the online fillable ePlan Registration Form to obtain a login and password. - print/fax or email option also available (ID's and passwords are required to file and then access plans). aLog into the new Westchester County ePlans submission site here.   Health Department contacts for information: Call (914) 864-7332 regarding submissions for construction of realty subdivisions, septic systems and private drinking water wells Call (914) 813-5149 regarding submissions for construction of backflow prevention devices, public pools, industrial and commercial air pollution sources and control equipment, and solid waste facilities Call (914) 813-5155 regarding submissions for construction of water and sewer main extensions, and all other public drinking water and wastewater facilities.   Other Links: NYSDOH Appendix 5-B: Standards for Water Wells and Supplemental Information Appendix 5-D: Special Requirements for Wells Serving Public Water Systems  NYSDEC Well Driller Registration NYSDOH Appendix 75-A Wastewater Treatment Standards - Individual Household Systems