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Tap water quality report

Lincoln, MA

EPA monitoring detected 21 contaminants across the 2 water suppliers serving Lincoln. 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
8,660
people served
21
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Lincoln'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
1340 µg/L 34%
of the EPA limit 4000 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2016
1/2 SYR4
Nitrate
1100 µg/L 11%
of the EPA limit 10000 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
1/2 SYR4
TTHM
94.52 µg/L 118%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Chloroform
85.74 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
44.855 µg/L 75%
of the EPA limit 60 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Barium
38 µg/L 1.9%
of the EPA limit 2000 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2016
1/2 SYR4
Trichloroacetic Acid
29.14 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Dichloroacetic Acid
16.45 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Copper
14.45 µg/L 1.1%
of the EPA limit 1300 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
1/2 SYR4
Bromodichloromethane
10.36 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Monochloroacetic Acid
2.19 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
Highest in the city: 4 µg/L — HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019
2/2 SYR4
Monobromoacetic Acid
2.775 µg/L
No EPA limit set
Highest in the city: HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019
1/2 SYR4
Dibromochloromethane
1.425 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
2/2 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
1/2 SYR4
Dibromoacetic Acid
0.7600 µg/L
No EPA limit set
Highest in the city: HANSCOM FAMILY HOUSING (LANDINGS) · 3,067 people · 2019
1/2 SYR4
Bromoform
0.5000 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
1/2 SYR4
Hexachlorocyclopentadiene
0.1460 µg/L 0.3%
of the EPA limit 50 µg/L
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2019
1/2 SYR4
PFOA
0.0064 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2025
1/2 UCMR-5
PFOS
0.0054 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2025
1/2 UCMR-5
PFHXS
0.0032 µg/L
No EPA limit set
Main supplier: LINCOLN WATER DEPT · 5,593 people · 2025
1/2 UCMR-5
Lead
0.0022 mg/L 15%
of the EPA limit 0.0150 mg/L
Main supplier: LINCOLN WATER DEPT · 5,593 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 Lincoln

SupplierPopulation served
LINCOLN WATER DEPT 5,593
HANSCOM FAMILY HOUSING (LANDINGS) 3,067

Frequently asked questions about Lincoln tap water

Is Lincoln tap water safe to drink?

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

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

What contaminants are in Lincoln's water?

The contaminants EPA monitoring detected in Lincoln include Fluoride, Nitrate, TTHM, Chloroform, 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.