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 1022 - ALTERNATE SYSTEMS
Section Env-Wq 1022.04 - Disposal of Residential Water Treatment Backwash
Universal Citation: NH Admin Rules Env-Wq 1022.04
Current through Register No. 13, March 27, 2025
(a) Residential water treatment backwash shall be discharged only to:
(1) An ISDS that is designed and sized to
accommodate the volume of backwash generated; or
(2) An alternative disposal system as
specified in (b) and (c), below.
(b) An alternative disposal system for residential water treatment backwash shall:
(1) Infiltrate on the property served by the
water treatment system;
(2) Not
cause soil erosion, siltation, or overland run-off;
(3) Not discharge to any surface water or
wetland;
(4) Accept residential
water treatment backwash only;
(5)
Be located so as to minimize any influence on water supply wells and ISDS on
the property served or on adjacent properties; and
(6) Not cause or contribute to any violation
of the ambient groundwater quality standards as specified in Env-Or 603 on
adjacent properties.
(c) An alternative disposal system such as a mini-dry well, small leaching pit, or trench with perforated pipe shall be used only if it meets the parameters specified in (b), above.
(d) An alternative disposal system meeting the parameters specified in (b), above, shall not require approval from the department.
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08
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