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Tap water quality report

Unity, ME

EPA monitoring detected 19 contaminants across the 3 water suppliers serving Unity. 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.

3
water suppliers
198
people served
19
contaminants found
Maine rankings Lead in Maine PFAS in Maine

What was found in Unity'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
Copper
292.8 µg/L 23%
of the EPA limit 1300 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
3/3 SYR4
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
Highest in the city: SANDY STREAM VILLAGE · 60 people · 2018
2/3 SYR4
Arsenic
80.35 µg/L 804%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
3/3 SYR4
Barium
10.93 µg/L 0.5%
of the EPA limit 2000 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
Highest in the city: 80.06 µg/L — SANDY STREAM VILLAGE · 60 people · 2018
3/3 SYR4
Total Haloacetic Acids (HAA5)
61.26 µg/L 102%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
2/3 SYR4
Lead
56.835 µg/L 379%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
3/3 SYR4
Chloroform
47 µg/L
No EPA limit set
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2015
1/3 SYR4
Trichloroacetic Acid
36 µg/L
No EPA limit set
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2015
1/3 SYR4
Dichloroacetic Acid
34.345 µg/L
No EPA limit set
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2015
1/3 SYR4
TTHM
30.56 µg/L 38%
of the EPA limit 80 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
3/3 SYR4
Bromodichloromethane
13 µg/L
No EPA limit set
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2015
1/3 SYR4
Gross Alpha, Excl. Radon And U
7.218 pCi/L 48%
of the EPA limit 15 pCi/L
Highest in the city: SANDY STREAM VILLAGE · 60 people · 2018
2/3 SYR4
Dibromochloromethane
2.38 µg/L
No EPA limit set
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2015
1/3 SYR4
Chromium
0.6900 µg/L 0.7%
of the EPA limit 100 µg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2019
Highest in the city: 2.185 µg/L — SANDY STREAM VILLAGE · 60 people · 2018
3/3 SYR4
Combined Radium (-226 And -228)
0.8000 pCi/L 16%
of the EPA limit 5 pCi/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2015
Highest in the city: 1.93 pCi/L — SCHOOL STREET VILLAGE · 50 people · 2015
3/3 SYR4
Bromoform
1.495 µg/L
No EPA limit set
Highest in the city: SANDY STREAM VILLAGE · 60 people · 2015
1/3 SYR4
Combined Uranium
1.49 µg/L 5%
of the EPA limit 30 µg/L
Highest in the city: SCHOOL STREET VILLAGE · 50 people · 2018
2/3 SYR4
Mercury
0.2000 µg/L 10%
of the EPA limit 2 µg/L
Highest in the city: SANDY STREAM VILLAGE · 60 people · 2018
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: UNITY BY THE STREAM LLC · 88 people · 2023
Highest in the city: 0.0033 mg/L — SANDY STREAM VILLAGE · 60 people · 2023
3/3 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 Unity

SupplierPopulation served
UNITY BY THE STREAM LLC 88
SANDY STREAM VILLAGE 60
SCHOOL STREET VILLAGE 50

Frequently asked questions about Unity tap water

Is Unity tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Unity. 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 Unity?

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

What contaminants are in Unity's water?

The contaminants EPA monitoring detected in Unity include Copper, Fluoride, Arsenic, Barium, 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.