TABLE 3-15. WATER QUALITY CRITERIA FOR KEY PARAMETERS 



Parameter 



Beneficial Uater 

 Use Protected 



Criteria 

 (Concentrations in ug/l 

 except where noted) 



Reference 



Copper 



Zinc 



Arsenic 



Suspended 

 sediment 



Freshwater aquatic life 



Freshwater aquatic life 



Freshwater aquatic life 



Freshwater fisheries 



Acute (1-hour ave. cone. )-18(HD)* 

 Chronic (4-day ave. cone. )-12(HD) 



Acute (1-hour ave. cone. )- 120(HD) 

 Chronic {4-day ave. cone. )- 1 10(HD) 



Acute (1-hour ave. cone.)-360 

 Chronic (4-day ave. cone. )- 190 



High level of protection <25 mg/l 

 Moderate level of protection 25-80 mg/l 

 Low level of protection 80-400 mg/l 

 Very low level of protection >400 mg/l 



EPA 1985a 



EPA 1987a 



EPA 1985a 



NAS-NAE 1973 



* HD Hardness Dependent. 100 mg/l used 



TABLE 3-16. 



FEDERAL DRINKING UATER STANDARDS FOR PUBLIC WATER SUPPLIES 



Parameter 



Primary Standards 

 Maximum Contaminant 

 Levels for Inorganic 

 Chemicals (ug/l) 



Secondary Standards 

 Recommended Maximum 

 Contaminant Levels (ug/l) 



Arsenic 



Cadmium 



Copper 



I ron 



Lead 



Zinc 



Nitrate as N 



Color 



PH 



SO 



10 



50 



10,000 



1,000 

 300 



5,000 



15 (color units) 

 6.5 - 8.5 (standard units) 



Sources: EPA 1986 a,b. 



3-65a 



