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. 38, September 20, 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be repealed by operation of law on the following day.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repealed by operation of law on the following day.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.
