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Tap water quality report

Hallowell, ME

EPA monitoring detected 15 contaminants across the 1 water supplier serving Hallowell. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
2,300
people served
15
contaminants found
Maine rankings Lead in Maine PFAS in Maine

What was found in Hallowell's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
1200 µg/L 12%
of the EPA limit 10000 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2019
1/1 SYR4
Nitrate-Nitrite
979.5 µg/L 9.8%
of the EPA limit 10000 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
Copper
858 µg/L 66%
of the EPA limit 1300 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
Barium
21.5 µg/L 1.1%
of the EPA limit 2000 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
Combined Uranium
5.74 µg/L 19%
of the EPA limit 30 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
TTHM
4.56 µg/L 5.7%
of the EPA limit 80 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
4.23 pCi/L 28%
of the EPA limit 15 pCi/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2016
1/1 SYR4
Lead
2.81 µg/L 19%
of the EPA limit 15 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
Chromium
2.39 µg/L 2.4%
of the EPA limit 100 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
Bromodichloromethane
1.6 µg/L
No EPA limit set
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2019
1/1 SYR4
Arsenic
1.56 µg/L 16%
of the EPA limit 10 µg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2017
1/1 SYR4
Dibromochloromethane
1.555 µg/L
No EPA limit set
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2019
1/1 SYR4
Chloroform
1.485 µg/L
No EPA limit set
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.1979 pCi/L 24%
of the EPA limit 5 pCi/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2016
1/1 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: HALLOWELL WATER DISTRICT · 2,300 people · 2023
1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Hallowell

SupplierPopulation served
HALLOWELL WATER DISTRICT 2,300

Frequently asked questions about Hallowell tap water

Is Hallowell tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Hallowell. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Hallowell?

1 public water supplier report drinking-water monitoring for Hallowell, Maine to the EPA. Each is listed above with its population served.

What contaminants are in Hallowell's water?

The contaminants EPA monitoring detected in Hallowell include Nitrate, Nitrate-Nitrite, Copper, Barium, Combined Uranium. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.