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Tap water quality report

Canton, ME

EPA monitoring detected 21 contaminants across the 2 water suppliers serving Canton. 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.

2
water suppliers
331
people served
21
contaminants found
Maine rankings Lead in Maine PFAS in Maine

What was found in Canton'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
Fluoride
568 µg/L 14%
of the EPA limit 4000 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
Highest in the city: 785 µg/L — CANTON POINT PARK · 88 people · 2018
2/2 SYR4
Copper
548 µg/L 42%
of the EPA limit 1300 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
2/2 SYR4
Nitrate
410 µg/L 4.1%
of the EPA limit 10000 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
2/2 SYR4
Nitrate-Nitrite
189.5 µg/L 1.9%
of the EPA limit 10000 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
101.75 µg/L 170%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Barium
4.39 µg/L 0.2%
of the EPA limit 2000 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
Highest in the city: 84.8 µg/L — CANTON POINT PARK · 88 people · 2018
2/2 SYR4
TTHM
82.415 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Chloroform
82.1 µg/L
No EPA limit set
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Trichloroacetic Acid
67.15 µg/L
No EPA limit set
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
20.6815 pCi/L 138%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2013
Highest in the city: 52.18 pCi/L — CANTON POINT PARK · 88 people · 2019
2/2 SYR4
Dichloroacetic Acid
40.3 µg/L
No EPA limit set
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Combined Uranium
1.995 µg/L 6.7%
of the EPA limit 30 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
Highest in the city: 35.4 µg/L — CANTON POINT PARK · 88 people · 2019
2/2 SYR4
Lead
14.4 µg/L 96%
of the EPA limit 15 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
2/2 SYR4
Gross Beta Particle Activity
9.92 pCi/L
No EPA limit set
Main supplier: CANTON WATER DISTRICT · 243 people · 2013
1/2 SYR4
Combined Radium (-226 And -228)
2.78 pCi/L 56%
of the EPA limit 5 pCi/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2013
Highest in the city: 4.998 pCi/L — CANTON POINT PARK · 88 people · 2018
2/2 SYR4
Bromodichloromethane
3.94 µg/L
No EPA limit set
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Chromium
0.5095 µg/L 0.5%
of the EPA limit 100 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
Highest in the city: 2.18 µg/L — CANTON POINT PARK · 88 people · 2018
2/2 SYR4
Monochloroacetic Acid
2.1 µg/L
No EPA limit set
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Arsenic
1.361 µg/L 14%
of the EPA limit 10 µg/L
Highest in the city: CANTON POINT PARK · 88 people · 2018
1/2 SYR4
Antimony, Total
0.5300 µg/L 8.8%
of the EPA limit 6 µg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2019
1/2 SYR4
Lead
0.0031 mg/L 21%
of the EPA limit 0.0150 mg/L
Main supplier: CANTON WATER DISTRICT · 243 people · 2026
2/2 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 Canton

SupplierPopulation served
CANTON WATER DISTRICT 243
CANTON POINT PARK 88

Frequently asked questions about Canton tap water

Is Canton tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Canton. 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 Canton?

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

What contaminants are in Canton's water?

The contaminants EPA monitoring detected in Canton include Fluoride, Copper, Nitrate, Nitrate-Nitrite, Total Haloacetic Acids (HAA5). 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.