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 64447.2 - Best Available Technologies (BATs)-Inorganic Chemicals
The technologies listed in table 64447.2-A are the best available technology, treatment techniques, or other means available for achieving compliance with the MCLs in table 64431-A for inorganic chemicals.
Table 64447.2-A
Best Available Technologies (BATs) Inorganic Chemicals
| Chemical | Best Available Technologies (BATs) | |
| Aluminum | 10 | |
| Antimony | 2, 7 | |
| Arsenic | 1, 2, 5, 6, 7, 9, 13 | |
| Asbestos | 2, 3, 8 | |
| Barium | 5, 6, 7, 9 | |
| Beryllium | 1, 2, 5, 6, 7 | |
| Cadmium | 2, 5, 6, 7 | |
| Chromium | 2, 5, 6a, 7 | |
| Cyanide | 5, 7, 11 | |
| Fluoride | 1 | |
| Hexavalent chromium | 2d, 5, 7 | |
| Mercury | 2b, 4, 6b, 7b | |
| Nickel | 5, 6, 7 | |
| Nitrate | 5, 7, 9 | |
| Nitrite | 5, 7 | |
| Perchlorate | 5, 12 | |
| Selenium | 1, 2c, 6, 7, 9 | |
| Thallium | 1, 5 | |
| __________ | ||
| a BAT for chromium III (trivalent chromium) only. | ||
| b BAT only if influent mercury concentrations <10 µg/L. | ||
| c BAT for selenium IV only. | ||
Key to BATs in table 64447.2-A:
1 = Activated Alumina
2 = Coagulation/Filtration (not BAT for systems <500 service connections)
3 = Direct and Diatomite Filtration
4 = Granular Activated Carbon
5 = Ion Exchange
6 = Lime Softening (not BAT for systems <500 service connections)
7 = Reverse Osmosis
8 = Corrosion Control
9 = Electrodialysis
10 = Optimizing treatment and reducing aluminum added
11 = Chlorine oxidation
12 = Biological fluidized bed reactor
13 = Oxidation/Filtration
1. New
section 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language will be repealed by operation of law on the following day.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. New section 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repealed by operation of law on the following day.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. New section
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language will be repealed by operation of law on the following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 including
amendment of section heading, first paragraph and Table 64447.2-A transmitted
to OAL 5-5-95 and filed 6-19-95 (Register 95, No. 25).
5. Amendment
of Table and NOTE filed 4-17-2000; operative 5-17-2000 (Register 2000, No.
16).
6. Amendment of section and NOTE filed 9-18-2007; operative
10-18-2007 (Register 2007, No. 38).
7. Amendment of Table 64447.2-A
and amendment of NOTE filed 10-29-2008; operative 11-28-2008 (Register 2008,
No. 44).
8. Amendment of section and NOTE filed 5-28-2014; operative
7-1-2014 (Register 2014, No. 22).
9. Change without regulatory
effect amending Table 64447.2-A filed 9-11-2017 pursuant to section
100, title 1, California Code of
Regulations (Register 2017, No. 37).
Note: Authority cited: Sections 116293(b), 116350, 116375, 131052 and 131200, Health and Safety Code. Reference: Section 116370, Health and Safety Code.
The amended version of this section by Register 2024, No. 31, effective 10/1/2024 is not yet available.
