California Code of Regulations › Title 22 - Social Security › Division 4 - Environmental Health › Chapter 15 - Domestic Water Quality and Monitoring Regulations › Article 12 - Best Available Technologies (BAT) › Section 64447 - Best Available Technology (BAT)-Microbiological Contaminants

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
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.
1. Repealer
					 of article 5.6 heading and section, new article 12, and renumbering and
					 amendment of former section
					 64430 to section
					 64447 filed 9-8-94 as an
					 emergency; operative 9-8-94 (Register 94, No. 36). A Certificate of Compliance
					 must be transmitted to OAL by 1-6-95 or emergency language will be repealed by
					 operation of law on the following day. For prior history, see Register 88, No.
					 51.
2. Repealer of article 5.6 heading and section, new article 12,
					 and renumbering and amendment of former section
					 64430 to section
					 64447 refiled 1-3-95 as an
					 emergency; operative 1-3-95 (Register 95, No. 1). A Certificate of Compliance
					 must be transmitted to OAL by 5-3-95 or emergency language will be repealed by
					 operation of law on the following day.
3. Repealer of article 5.6
					 heading and section, new article 12, and renumbering and amendment of former
					 section 64430 to section
					 64447 refiled 4-26-95 as an
					 emergency; operative 4-26-95 (Register 95, No. 17). A Certificate of Compliance
					 must be transmitted to OAL by 8-24-95 or emergency language will be repealed by
					 operation of law on the following day.
4. Certificate of Compliance
					 as to 4-26-95 order transmitted to OAL 5-5-95 and filed 6-19-95 (Register 95,
					 No. 25).
5. Change without regulatory effect amending first
					 paragraph and NOTE filed 6-2-2015 pursuant to section
					 100, title 1, California Code of
					 Regulations (Register 2015, No. 23).
6. Amendment of section and
					 NOTE filed 5-28-2021; operative 7-1-2021 (Register 2021, No.
					 22).
Note: Authority cited: Sections
						116271
						and
						116375,
						Health and Safety Code. Reference: Sections
						116350
						and
						116370,
						Health and Safety Code.