Portland
County, Maine
92 Excellent
Water Quality Score
92/100
Grade
A
Water Systems
1
Population
135,068
Key Contaminants
Lead
13.6278 / 15 μg/L
0 μg/L MCL: 15 μg/L
Gross Alpha Particle Activity
12.8887 / 15 pCi/L
0 pCi/L MCL: 15 pCi/L
Radium-228
2.9308 / 5 pCi/L
0 pCi/L MCL: 5 pCi/L
Copper
0.7589 / 1.3 mg/L
0 mg/L MCL: 1.3 mg/L
Selenium
28.0873 / 50 μg/L
0 μg/L MCL: 50 μg/L
Haloacetic Acids (HAA5)
27.5212 / 60 μg/L
0 μg/L MCL: 60 μg/L
PFOS (Perfluorooctane Sulfonate)
0.0015 / 0.004 μg/L
0 μg/L MCL: 0.004 μg/L
Total Trihalomethanes
28.2975 / 80 μg/L
0 μg/L MCL: 80 μg/L
Water Systems Serving Portland (1)
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