New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Ws - Division of Water
Chapter Env-Ws 300 - NEW HAMPSHIRE DRINKING WATER RULES
Part Env-Ws 382 - DISINFECTANT/DISINFECTION BYPRODUCTS RULE
Section Env-Ws 382.22 - Treatment Technique for Control of Disinfection Byproduct Precursors
Current through Register No. 13, March 27, 2025
(a) The owner of a SW/GWUDISW system using conventional filtration treatment shall use enhanced coagulation or enhanced softening as treatment techniques to control disinfection byproduct precursors in drinking water treatment and distribution systems.
(b) A SW/GWUDISW system owner using conventional filtration treatment shall operate with enhanced coagulation or enhanced softening to achieve the TOC percent removal levels specified in Env-Ws 382.23 or Env-Ws 382.24 unless the system achieves at least one of the following criteria:
(c) The department shall:
(d) The technologies specified in (6)c. above, shall be installed and operating prior to June 30, 2005.
(e) Failure to install and operate these technologies by the date in the department- approved schedule shall constitute a violation of Env-Ws 300.
(f) If a system owner practicing enhanced softening cannot achieve the TOC removals specified in Env-Ws 382.23(a), the system owner may achieve compliance with TOC removals by using:
(g) A system owner identified in (f) above, shall comply with the monitoring requirements specified in Env-Ws 382.13.
(See third Revision Note at chapter heading Env-Ws 300); #7735, eff 8-2-02; amd by #8351, eff 5-14-05