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Tap water quality report

Lisbon, ME

EPA monitoring detected 22 contaminants across the 1 water supplier serving Lisbon. 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
6,643
people served
22
contaminants found
Maine rankings Lead in Maine PFAS in Maine

What was found in Lisbon'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
1338 µg/L 13%
of the EPA limit 10000 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2019
1/1 SYR4
Nitrate-Nitrite
1293.5 µg/L 13%
of the EPA limit 10000 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2017
1/1 SYR4
Copper
629.5 µg/L 48%
of the EPA limit 1300 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2017
1/1 SYR4
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2017
1/1 SYR4
Lithium
22.9 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2024
1/1 UCMR-5
TTHM
17.8 µg/L 22%
of the EPA limit 80 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
17.155 µg/L 29%
of the EPA limit 60 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2019
1/1 SYR4
Lead
15.055 µg/L 100%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2017
1/1 SYR4
Barium
14.35 µg/L 0.7%
of the EPA limit 2000 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2017
1/1 SYR4
Arsenic
10.36 µg/L 104%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2019
1/1 SYR4
Combined Uranium
8.925 µg/L 30%
of the EPA limit 30 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
4.8895 pCi/L 33%
of the EPA limit 15 pCi/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2019
1/1 SYR4
Chromium
3.35 µg/L 3.4%
of the EPA limit 100 µg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2017
1/1 SYR4
Bromodichloromethane
1.48 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2015
1/1 SYR4
Dibromochloromethane
1.3 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2015
1/1 SYR4
Chloroform
1.1 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2015
1/1 SYR4
PFHXS
0.0132 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2024
1/1 UCMR-5
PFBS
0.0093 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2024
1/1 UCMR-5
Pfhxa
0.0055 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2024
1/1 UCMR-5
Pfpea
0.0045 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2024
1/1 UCMR-5
PFOA
0.0041 µg/L
No EPA limit set
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2024
1/1 UCMR-5
Lead
0.0016 mg/L 11%
of the EPA limit 0.0150 mg/L
Main supplier: LISBON WATER DEPARTMENT · 6,643 people · 2025
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 Lisbon

SupplierPopulation served
LISBON WATER DEPARTMENT 6,643

Frequently asked questions about Lisbon tap water

Is Lisbon tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Lisbon. 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 Lisbon?

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

What contaminants are in Lisbon's water?

The contaminants EPA monitoring detected in Lisbon include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Lithium. 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.