Onsite Wastewater Treatment Systems (OWTS)

An Onsite Wastewater Treatment System (OWTS), commonly called septic or sewage systems, serves approximately 15,000 homes in Tompkins County that are located outside of areas served by municipal sewer systems.

An OWTS construction permit from Tompkins County Environmental Health is required before constructing a new OWTS or prior to conducting most repairs or replacing an existing system. Environmental Health OWTS staff will design most OWTS as part of the permitting process.

A construction permit must also be obtained before installing or replacing a septic tank, pump chamber or holding tank.

 
 
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