Observed arrival · 2026-11-01
LeachLab turns New York septic rules into reviewable calculations
A design tool for licensed engineers that says it sizes septic systems under New York’s Appendix 75-A and produces a calculation sheet for review and sealing.
- For
- Licensed engineers designing septic systems in New York
- Worth noticing
- The site says it refuses mounds and sand filters with an explanation, and that saved revisions retain engine and rule versions.
Field notes
The described workflow starts with site and soil data and covers tanks, absorption fields, laterals, and dosing. The page lists conventional and shallow trenches, cut and fill, absorption beds, seepage pits, and raised systems; mounds and sand filters are refused with a reason. It says each saved revision retains the inputs and software and rule versions, while warning that the calculations have not been reviewed by a licensed engineer and do not include county rules.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue