Best Available Technology (BAT)--Microbiological Contaminants.

22 CCR 64447

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22 CCR 64447

§ 64447. Best Available Technology (BAT)--Microbiological Contaminants. The technologies identified by the State Board as the best available technology (for a public water system serving more than 10,000 persons), affordable technology (for a public water system serving 10,000 or fewer persons), treatment techniques, or other means available for achieving compliance with the E. coli MCL are as follows:

(a)

Protection of wells from fecal coliform contamination by appropriate placement and construction;

(b)

Maintenance of a disinfectant residual throughout the distribution system;

(c)

Proper maintenance of the distribution system including appropriate pipe replacement and repair procedures, main flushing programs, proper operation and maintenance of storage tanks and reservoirs, cross connection control, and continual maintenance of positive water pressure in all parts of the distribution system;

(d)

Filtration and/or disinfection of approved surface water, in compliance with Section 64650, or disinfection of groundwater, in compliance with Section 64430, using strong oxidants such as chlorine, chlorine dioxide, or ozone; and

(e)

For a system using groundwater, compliance with the groundwater portion of a Drinking Water Source Assessment and Protection Program, conducted according to the Drinking Water Source Assessment Protection Program, California Department of Health Services, January 2000, which is incorporated by reference.

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