40 CFR Appendix III
EPA Interim Primary Drinking Water Standards
June 9, 2020
Open Table
Parameter | Maximum level (mg/l) |
---|---|
Arsenic | 0.05 |
Barium | 1.0 |
Cadmium | 0.01 |
Chromium | 0.05 |
Fluoride | 1.4-2.4 |
Lead | 0.05 |
Mercury | 0.002 |
Nitrate (as N) | 10 |
Selenium | 0.01 |
Silver | 0.05 |
Endrin | 0.0002 |
Lindane | 0.004 |
Methoxychlor | 0.1 |
Toxaphene | 0.005 |
2,4-D | 0.1 |
2,4,5-TP Silver | 0.01 |
Radium | 5 pCi/1 |
Gross Alpha | 15 pCi/1 |
Gross Beta | 4 millirem/yr |
Turbidity | 1/TU |
Coliform Bacteria | 1/100 ml |
[Comment: Turbidity is applicable only to surface water supplies.]