Secondary
Drinking Water Standards
No
adverse health effects are generally associated with the
secondary drinking water contaminants. At considerably
higher concentrations than those listed in the standards,
health implications may exist as well as aesthetic
degradation.
| Contaminant |
Allowed
Level |
| Aluminum |
0.2
mg/L |
| Chloride |
250
mg/L |
| Copper |
1
mg/L |
| Fluoride |
2.0
mg/L |
| Iron |
0.3
mg/L |
| Manganese |
0.05
mg/L |
| Silver |
0.1
mg/L |
| Sulfate |
250
mg/L |
| Zinc |
5
mg/L |
| Color |
15
color units |
| Odor |
3
(threshold odor number) |
| pH |
6.5
- 8.5 |
| Total
Dissolved Solids |
500
mg/L |
| Foaming
Agents |
0.5
mg/L |