Wyoming Administrative Code
Agency 048 - Health, Department of
Sub-Agency 0052 - Small Water Supply
Appendix A - Minimum water quality standards
Current through September 21, 2024
Used for the conveyance of private rural property connected to a private supply
|
Wyo |
EPA |
Det. |
||
|
Analyte |
MCL* |
MCL/SMCL** |
Limit |
Units |
|
Calcium Magnesium Sodium |
1 1 3 |
mg/L mg/L mg/L |
||
|
Hardness as CaCO3 |
mg/L |
|||
|
Total Alkalinity as CaCO Chloride |
3 (250) |
250 |
mg/L |
|
|
Sulfates |
750 |
deferred |
3 |
mg/L |
|
Nitrates + Nitrites as N |
10 |
10 |
0.05 |
mg/L |
|
Fluoride |
(2) |
2 |
mg/L |
|
|
Conductivity pH |
(6.5-8.5) |
6.5-8.5 |
Umhos/cm pH Units |
|
|
Total Dissolved Solids, Summation |
1500 |
500 |
mg/L |
|
|
Iron |
(0.3) |
0.3 |
mg/L |
|
|
Manganese |
(0.05) |
0.05 |
mg/L |
|
|
Lead, First draw |
(0.015) |
TT/0.015 |
0.002 |
mg/L |
|
Copper, First draw |
(1.3) |
TT/1.3 |
0.1 |
mg/L |
|
Lead, Second draw |
(0.015) |
TT/0.015 |
0.002 |
mg/L |
|
Copper, Second draw |
(1.3) |
TT/1.3 |
0.1 |
mg/L |
|
Zinc Corrosivity |
(5) (Non-Cor) |
5 Non-Cor |
mg/L LI Units |
|
|
Total Coliform |
Negative |
Negative |
/100ml |
|
1. Analytes in BOLD shaded ares represent the minimum requirement for private water supplies serving a single residence.
2. Analytes in parentheses are recommended, in addition to those in #1, for private water supplies connected to a single residence but required for private supplies serving multiple residences below those regulated under the Safe Drinking Water Act.
3. If first draw lead and/or copper data exceeds recommendations, the data should ONLY be used to warn buyers or renters and make suggestions to minimize exposure.
*MCL - Maximum Contaminant Level
**SMCL - Secondary Maximum Contaminant Level
