Appendix 27.  


EPA INTERIM PRIMARY DRINKING WATER STANDARDS
ParameterMaximum 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.