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Tap water quality report

Braintree, MA

EPA monitoring detected 22 contaminants across the 2 water suppliers serving Braintree. 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
39,168
people served
22
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Braintree'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
140 µg/L 3.5%
of the EPA limit 4000 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Nitrate
100 µg/L 1%
of the EPA limit 10000 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
TTHM
80.67 µg/L 101%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Chloroform
33.75 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Barium
30.95 µg/L 1.5%
of the EPA limit 2000 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Bromodichloromethane
24 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
21.52 µg/L 36%
of the EPA limit 60 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Dibromochloromethane
13 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Trichloroacetic Acid
13 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Dichloroacetic Acid
9.45 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Dibromoacetic Acid
2.59 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Monochloroacetic Acid
2.495 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Bromoform
1.475 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Selenium
1.4 µg/L 2.8%
of the EPA limit 50 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
Asbestos
1 MFL 14%
of the EPA limit 7 MFL
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2014
1/2 SYR4
Dichloromethane
0.6400 µg/L 13%
of the EPA limit 5 µg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2019
1/2 SYR4
PFOS
0.0085 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2024
1/2 UCMR-5
PFOA
0.0053 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2024
1/2 UCMR-5
Pfpea
0.0050 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2024
1/2 UCMR-5
Lead
0.0048 mg/L 32%
of the EPA limit 0.0150 mg/L
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2025
1/2 LCR
Pfhxa
0.0042 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2024
1/2 UCMR-5
PFBS
0.0030 µg/L
No EPA limit set
Main supplier: BRAINTREE WATER AND SEWER DEPT. · 39,143 people · 2024
1/2 UCMR-5
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 Braintree

SupplierPopulation served
BRAINTREE WATER AND SEWER DEPT. 39,143
TRI TOWN WATER BOARD 25

Frequently asked questions about Braintree tap water

Is Braintree tap water safe to drink?

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

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

What contaminants are in Braintree's water?

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