Section Env-Dw 405.22 - Pumps and Auxiliary Equipment(a) All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.(b) In addition to the electrical control system, an alarm system shall be provided to note failure of pumps and low water levels in the atmospheric storage tank(s). Each alarm function shall be labeled and the alarm shall be equipped with a silencing mechanism.(c) In instances where the pumphouse is not easily seen, the alarm system shall be of an auto dialer for telephone, radio, or audio signal to insure that the alarmed condition is communicated to nearby occupied residences or other locations acceptable to the department where action can be initiated.(d) A water meter shall be installed on each incoming source line before the water enters the storage tank(s).(e) A pressure gauge shall be provided. Gauges shall be installed with gauge cocks for isolation and of suitable range for the expected pressure range.(f) The water system shall be capable of receiving an immediate addition of a disinfectant.(g) Components of the system required by (f) above, shall include:(1) An injection tap on source water feed lines, before all water storage tanks;(2) An electrical outlet interconnected with the source pump electrical system; and(3) A flow indicator on the source water feed lines to prevent over chlorination.(h) The pump controls shall have a manual "off/on" switch to control pump operations.(i) Where an air compressor is provided for air which will be in direct contact with drinking water, the air compressor shall be of the oil-less type.N.H. Code Admin. R. Env-Dw 405.22
(See Revision Note at part heading for Env-Dw 405) #10612, eff 6-1-14