 |
| 
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|||||||
|
|
|
|
|
|
|
| Inorganic | ||||
| Contaminants |
MCLG*,
mg/L |
MCL**,
mg/L |
|
Treatment
Methods |
| Antimony |
0.006 |
0.006 |
Coagulation/Filtration |
|
|
||||
| Arsenic (+3)
Arsenic (+5)
|
zero (P)*
|
0.02 to 0.002 (P)* (total arsenic)
|
Chemical
Oxidation/Disinfection Coagulation/Filtration |
|
| Arsenic (organic complexes) | Activated Carbon | |||
|
|
||||
| Asbestos | 7
MFL |
7
million fibers per liter (MFL) (longer than 10 microns) |
Coagulation/Filtration |
|
|
||||
| Barium | 2 |
2 |
Cation
Exchange |
|
|
||||
| Beryllium | 0.004 |
0.004 |
Coagulation/Filtration |
|
|
||||
| Cadmium | 0.005 |
0.005 |
Coagulation/Filtration |
|
|
||||
| Chromium
(+3)
|
0.1
|
0.1
|
Coagulation/Filtration Anion Exchange |
|
| Chromium (organic complexes) | Activated Carbon | |||
|
||||
| Copper | 1.3 |
1.3 (action level) |
Cation
Exchange (20%-90%) Reverse Osmosis Distillation Electrodialysis |
|
|
||||
| Cyanide | 0.2 |
0.2 |
Chemical
Oxidation/Disinfection at pH10 Anion Exchange Reverse Osmosis Distillation Electrodialysis |
|
|
||||
| Fluoride | 4.0 |
4.0 |
Activated
Alumina Bone Char Reverse Osmosis Distillation Electrodialysis |
|
| Lead | zero |
0.015 |
Cation
Exchange (20%-90%) Coagulation/Filtration Submicron Filtration/Activated Carbon Reverse Osmosis Distillation Electrodialysis |
|
| Mercury(+2)
Mercury (HgCl3 -1)
|
0.002 |
0.002 (total mercury) |
Submicron
Filtration/Activated Carbon Anion Exchange |
|
| Mercury (organic complexes) | Activated Carbon | |||
|
||||
| Nickel | 0.1 |
0.1 |
Cation
Exchange Reverse Osmosis Distillation Electrodialyis |
|
|
||||
| Nitrate plus nitrite (as nitrogen)
|
10 |
10 |
Anion
Exchange Chemical Oxidation/Disinfection |
|
|
||||
| Selenium
(+4)
Selenium (+6) |
0.05 |
0.05 (total selenium) |
Coagulation/Filtration Anion Exchange |
|
|
||||
| Sulfate | 500
(P)* |
500
(P)* |
Anion
Exchange Activated Alumina Reverse Osmosis Distillation Electrodialysis |
|
|
||||
| Thallium | 0.0005 |
0.002 |
Cation
Exchange |
|
(P)* = Proposed Standard MCLG* = Maximum Contaminant Level Goal established at the level at which no known or anticipated adverse effects on the health of persons occur and which allows an adequate margin of safety; expressed in milligrams per liter unless otherwise specified. MCL** = Maximum Contaminant Level established as close to the MCLG as feasible taking into consideration costs and treatment techniques applicable at public water systems; expressed in milligrams per liter unless otherwise specified. |
||||
|
|||||
|
