Regulatory Limits and Applications - Fundamental QSARs for Metal Ions - page 260

TABLE 7.4 ( Continued )
Regulations for Metal Contaminants in Water

National Primary and Secondary
Drinking Water Regulations

National Recommended Water Quality Criteria

Primary Secondary Freshwater Saltwater Human Health for Consumption of:

MCLG
(mg/L)

MCL
(mg/L)

SDWR
(mg/L)

CMC
(µg/L)

CCC
(µg/L)

CMC
(µg/L)

CCC
(µg/L)

Water +
Organism (µg/L)

Organism Only
(µg/L)

Chemical Name CASRN

Thallium 7440-28-0 0.0005 0.002 — — — — — 0.24 0.47

Zinc 7440-66-6 — — 5 120 120 90 81 7400 26,000

MCLG = Maximum Contaminant Level Goal; MCL = Maximum Contaminant Level; SDWR = Secondary Drinking Water Regulations; CMC = Criteria Maximum
Concentration; CCC = Criterion Continuous Concentration.