New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1000 - SUBDIVISIONS; INDIVIDUAL SEWAGE DISPOSAL SYSTEMS
Part Env-Wq 1010 - SEPTIC TANKS
Section Env-Wq 1010.07 - Inlet and Outlet Baffles
Universal Citation: NH Admin Rules Env-Wq 1010.07
Current through Register No. 13, March 27, 2025
(a) Each septic tank shall have an inlet baffle and an outlet baffle that are:
(1) Plumb and level;
(2) Secured to the inlet pipe or outlet pipe,
as applicable, using stainless steel screws; and
(3) Plastic vented tees that extend above the
liquid line to not less than one inch from the interior of the top of the
septic tank or cover.
(b) The inlet baffle shall:
(1) Divert the incoming sewage downward;
and
(2) Penetrate at least 8 inches
below the liquid level, but in no case greater than the depth of the outlet
baffle.
(c) The outlet baffle shall extend to a distance below the surface of the liquid equal to 40% of the liquid depth.
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08; ss by #9904-A, eff 4-16-11
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