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New Jersey Department of Environmental Protection  
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Bureau of Ground Water, Residuals, and Permit Administration
NJDEP Division of Water Quality
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Onsite Wastewater Management Program

The Onsite Wastewater Management Program maintains the regulations governing low volume residential and commercial onsite wastewater treatment systems, commonly called septic systems. These regulations, the Standards for Individual Subsurface Sewage Disposal Systems (N.J.A.C. 7:9A) contain requirements for the proper design, construction, and operation of systems to protect public health and the environment. This program is coodinated with, and implemented though, the local health departments. The program is committed to improving New Jersey’s water quality and protecting human health and the environment and both improving and promoting local septic management.


Amendments to Individual Subsurface Sewage Disposal Systems' Standards

2021 Amendment Adoption
The NJDEP has adopted an amendment to the Standards for Individual Subsurface Sewage Disposal Systems (N.J.A.C. 7:9A) to remove the requirement that an authorized installer of advanced wastewater pretreatment devices, products in lieu of laterals and/or filter material, and drip dispersal technologies possess a National Environmental Health Association (NEHA) Certified Installer of Onsite Wastewater Treatment Systems (CIOWTS) Advanced Level certification. The amended rule was adopted on July 06, 2021. Included below is the Notice of Rule Adoption Document

blue arrow Notice of Rule Adoption Standards for Individual Subsurface Sewage Disposal Systems N.J.A.C. 7:9A pdf



2012 Adopted Amendments
The 2012 Amendments to the Standards for Individual Subsurface Sewage Disposal Systems (N.J.A.C. 7:9A) were adopted and appeared in the April 2, 2012 New Jersey Register. Included below are supporting guidance documents and additional information regarding the 2012 Rule Amendments.

blue arrow Changes to NJAC 7:9A, Impacts to Realtors .mwv
blue arrow An Update Regarding Cesspools and Inspections for Real Property Transfers pdf
blue arrow Updated Manufacturers Lists .html
blue arrow Rule Amendment Highlights pdf
blue arrow Technical Manual for Applications for Treatment Works Approvals Under N.J.A.C. 7:9A pdf
blue arrow Courtesy Copy of the N.J.A.C. 7:9A pdf


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Last Updated: June 1, 2023