Madison

Dane County, Wisconsin

85 Good

Water Quality Score

85/100

Grade

Water Systems

Population

269,840

Key Contaminants

Haloacetic Acids (HAA5) Violation

71.1642 / 60 μg/L

0 μg/L MCL: 60 μg/L

Atrazine

2.5452 / 3 μg/L

0 μg/L MCL: 3 μg/L

Gross Alpha Particle Activity

12.0875 / 15 pCi/L

0 pCi/L MCL: 15 pCi/L

Manganese

32.2026 / 50 μg/L

0 μg/L MCL: 50 μg/L

Perchlorate

35.3945 / 56 μg/L

0 μg/L MCL: 56 μg/L

Barium

1.2462 / 2 mg/L

0 mg/L MCL: 2 mg/L

Trichloroethylene (TCE)

2.6091 / 5 μg/L

0 μg/L MCL: 5 μg/L

Tetrachloroethylene (PCE)

1.9712 / 5 μg/L

0 μg/L MCL: 5 μg/L

Water quality can vary by neighborhood in Madison.