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 373 - DESIGN STANDARDS FOR NON-COMMUNITY WATER SYSTEMS
Section Env-Ws 373.15 - System Concept
Universal Citation: NH Admin Rules Env-Ws 373.15
Current through Register No. 13, March 27, 2025
(a) Iflimited fire protection service is to be provided, the following water system design criteria shall be observed:
(1) When fire hydrants are planned by the
water system owner, a separate water storage tank shall be installed and the
fire hydrants shall connect to only this water storage tank. The re-fill pipe
for this water storage tank shall incorporate an air gap. There shall be no
connection between the domestic water system and the fire storage tank;
and
(2) Where sprinklers are
planned to be installed within the premises to be served by the water system,
the service line and domestic plumbing shall be appropriately increased in
size. The service line shall be sized to accommodate a design flow rate
specified in the state fire code,Saf-C 6000.The sprinkler portion of the piping
shall be separated from the domestic plumbing by at least a testable double
check valve.
(b) Additional provisions for source capacity and storage facilities in the water system's design shall be made to accommodate fire flows.
(See Revision Note at chapter heading for Env-Ws 300); ss by #8499, eff 11-30-05
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