Septic system requirements in New York
What landplan.io applies when it designs a septic system in New York: the system types allowed, tank sizes, setbacks and soil loading rates, with what septic products cost there.
Updated
Design a septic system for an address in New York
Reviewed landplan.io designs by New York's own rules, which our staff reviewed against the state's regulations. Last published 5 October 2026.
Septic systems allowed in New York
The system types landplan.io permits in New York:
- Mounded Leaching System
- Spray Distribution System
- Low Pressure Pipe System
- Leaching Trench System
- Infiltrator Advanced Treatment Leachfield (ATL)
- Infiltrator Advanced Enviro-Septic® (AES)
- Discharging System
Septic tank size in New York
The daily design flow of a home: 150 gal/day per bedroom, at least 240 gal/day. The septic tank is sized from that flow:
| Daily design flow | Minimum tank |
|---|---|
| up to 240 gal/day | 1,000 gallons |
| 240 to 360 gal/day | 1,500 gallons |
| 360 to 600 gal/day | 2,000 gallons |
| 600 to 720 gal/day | 2,500 gallons |
| 720 to 840 gal/day | 2,750 gallons |
| 840 to 920 gal/day | 3,000 gallons |
| 920 to 1,040 gal/day | 3,250 gallons |
Septic setbacks in New York
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in New York. Confirm a design with the New York health department or your county's before you build.
Septic companies, designers and jobs in New York
- Septic companies and distributors in New York (62)
- Septic designers in New York
- Septic design jobs in New York
Where the rules come from
The regulations and documents landplan.io's New York rules are read from:
- Appendix 75-A - Wastewater Treatment Standards, Individual Household Systems (10 NYCRR Part 75, Appendix 75-A)
- Section 75.5 - Minimum standards for individual onsite wastewater treatment systems (10 NYCRR § 75.5)
Septic rules by county in New York
- Albany County
- Allegany County
- Bronx County
- Broome County
- Cattaraugus County
- Cayuga County
- Chautauqua County
- Chemung County
- Chenango County
- Clinton County
- Columbia County
- Cortland County
- Delaware County
- Dutchess County
- Erie County
- Essex County
- Franklin County
- Fulton County
- Genesee County
- Greene County
- Hamilton County
- Herkimer County
- Jefferson County
- Kings County
- Lewis County
- Livingston County
- Madison County
- Monroe County
- Montgomery County
- Nassau County
- New york County
- Niagara County
- Oneida County
- Onondaga County
- Ontario County
- Orange County
- Orleans County
- Oswego County
- Otsego County
- Putnam County
- Queens County
- Rensselaer County
- Richmond County
- Rockland County
- Saratoga County
- Schenectady County
- Schoharie County
- Schuyler County
- Seneca County
- St Lawrence County
- Steuben County
- Suffolk County
- Sullivan County
- Tioga County
- Tompkins County
- Ulster County
- Warren County
- Washington County
- Wayne County
- Westchester County
- Wyoming County
- Yates County
Questions
What septic systems are allowed in New York?
landplan.io permits these system types in New York: Mounded Leaching System, Spray Distribution System, Low Pressure Pipe System, Leaching Trench System, Infiltrator Advanced Treatment Leachfield (ATL), Infiltrator Advanced Enviro-Septic® (AES) and Discharging System.
What size septic tank do I need in New York?
landplan.io sizes the septic tank in New York from the daily design flow: up to 240 gal/day: 1,000 gallons; 240 to 360 gal/day: 1,500 gallons; 360 to 600 gal/day: 2,000 gallons; larger flows need larger tanks. A home's design flow is 150 gal/day per bedroom, at least 240 gal/day.