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Tap water quality report

Waterboro, ME

EPA monitoring detected 17 contaminants across the 5 water suppliers serving Waterboro. 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.

5
water suppliers
4,138
people served
17
contaminants found
Maine rankings Lead in Maine PFAS in Maine

What was found in Waterboro'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
2400 µg/L 24%
of the EPA limit 10000 µg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2019
3/5 SYR4
Nitrate-Nitrite
2200 µg/L 22%
of the EPA limit 10000 µg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2017
3/5 SYR4
Copper
214.25 µg/L 16%
of the EPA limit 1300 µg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2017
Highest in the city: 1467 µg/L — TWIN PINES ESTATES #1 · 63 people · 2018
5/5 SYR4
Fluoride
1200 µg/L 30%
of the EPA limit 4000 µg/L
Highest in the city: APPLEWOOD · 55 people · 2018
3/5 SYR4
Barium
8.9 µg/L 0.4%
of the EPA limit 2000 µg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2017
Highest in the city: 118.1 µg/L — TWIN PINES ESTATES #1 · 63 people · 2017
5/5 SYR4
Lead
14.4 µg/L 96%
of the EPA limit 15 µg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2017
Highest in the city: 17.25 µg/L — APPLEWOOD · 55 people · 2018
4/5 SYR4
Lithium
14 µg/L
No EPA limit set
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2025
1/5 UCMR-5
Arsenic
3.89 µg/L 39%
of the EPA limit 10 µg/L
Highest in the city: APPLEWOOD · 55 people · 2018
3/5 SYR4
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2017
5/5 SYR4
Chloroform
2.815 µg/L
No EPA limit set
Highest in the city: WATERBORO WATER DISTRICT · 470 people · 2019
1/5 SYR4
Bromodichloromethane
2.6 µg/L
No EPA limit set
Highest in the city: WATERBORO WATER DISTRICT · 470 people · 2019
1/5 SYR4
Combined Radium (-226 And -228)
1.92 pCi/L 38%
of the EPA limit 5 pCi/L
Highest in the city: TWIN PINES ESTATES #1 · 63 people · 2015
3/5 SYR4
Dibromochloromethane
1.5 µg/L
No EPA limit set
Highest in the city: WATERBORO WATER DISTRICT · 470 people · 2019
1/5 SYR4
Combined Uranium
1.2 µg/L 4%
of the EPA limit 30 µg/L
Highest in the city: WATERBORO WATER DISTRICT · 470 people · 2019
1/5 SYR4
TTHM
1.2 µg/L 1.5%
of the EPA limit 80 µg/L
Highest in the city: WATERBORO WATER DISTRICT · 470 people · 2019
1/5 SYR4
Mercury
0.2600 µg/L 13%
of the EPA limit 2 µg/L
Highest in the city: APPLEWOOD · 55 people · 2018
2/5 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: LAKE ARROWHEAD COMMUNITY INC · 3,500 people · 2023
Highest in the city: 0.0063 mg/L — TWIN PINES ESTATES #1 · 63 people · 2024
5/5 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 Waterboro

SupplierPopulation served
LAKE ARROWHEAD COMMUNITY INC 3,500
WATERBORO WATER DISTRICT 470
TWIN PINES ESTATES #1 63
APPLEWOOD 55
TWIN PINES ESTATES #2 50

Frequently asked questions about Waterboro tap water

Is Waterboro tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Waterboro. 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 Waterboro?

5 public water suppliers report drinking-water monitoring for Waterboro, Maine to the EPA. Each is listed above with its population served.

What contaminants are in Waterboro's water?

The contaminants EPA monitoring detected in Waterboro include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium. 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.