RSA 485-A:5
III. No municipality or other governmental entity owning or controlling any public sewage and waste treatment facility shall permit the discharge of any waste to such facility which does not comply with pretreatment standards established by the department.
RSA 485-A:5
IV. Pretreatment standards or effluent limits adopted by a municipality as part of its sewer use ordinance or industrial pretreatment program and approved by the department shall be enforceable by the department as pretreatment standards established under RSA 485-A:4, XV and rules adopted under RSA 485-A:6.
N.H. Admin. Code Env, Env-Wq, ch. Env-Wq 300, pt. Env-Wq 306, app C