St. Louis
St. Louis City County, Missouri
37 Poor
Water Quality Score
37/100
Grade
D
Water Systems
1
Population
301,578
Key Contaminants
Chlorine
3.8795 / 4 mg/L
0 mg/L MCL: 4 mg/L
Fluoride
3.7735 / 4 mg/L
0 mg/L MCL: 4 mg/L
Copper
1.1228 / 1.3 mg/L
0 mg/L MCL: 1.3 mg/L
Nitrate
6.6835 / 10 mg/L
0 mg/L MCL: 10 mg/L
Perchlorate
34.8928 / 56 μg/L
0 μg/L MCL: 56 μg/L
Barium
0.9291 / 2 mg/L
0 mg/L MCL: 2 mg/L
PFOA (Perfluorooctanoic Acid)
0.0017 / 0.004 μg/L
0 μg/L MCL: 0.004 μg/L
Nitrite
0.3185 / 1 mg/L
0 mg/L MCL: 1 mg/L
Water Systems Serving St. Louis (1)
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