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Tap water quality report

Lynn, MA

EPA monitoring detected 20 contaminants across the 1 water supplier serving Lynn. 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.

1
water supplier
101,253
people served
20
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Lynn'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
921.5 µg/L 23%
of the EPA limit 4000 µg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Nitrate
250 µg/L 2.5%
of the EPA limit 10000 µg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Chlorite
200 µg/L 20%
of the EPA limit 1000 µg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
TTHM
72.47 µg/L 91%
of the EPA limit 80 µg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Chloroform
31.05 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
25.52 µg/L 43%
of the EPA limit 60 µg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Bromodichloromethane
25 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Barium
18.65 µg/L 0.9%
of the EPA limit 2000 µg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Dibromochloromethane
15 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Dichloroacetic Acid
12.05 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Trichloroacetic Acid
11 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Monochloroacetic Acid
7.4 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.8 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Bromoform
1.9 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2019
1/1 SYR4
Pfba
0.0054 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2023
1/1 UCMR-5
Pfpea
0.0052 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2023
1/1 UCMR-5
Pfhxa
0.0049 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2023
1/1 UCMR-5
PFOA
0.0047 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2023
1/1 UCMR-5
PFBS
0.0031 µg/L
No EPA limit set
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2023
1/1 UCMR-5
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
Main supplier: LYNN WATER AND SEWER COMM · 101,253 people · 2023
1/1 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 Lynn

SupplierPopulation served
LYNN WATER AND SEWER COMM 101,253

Frequently asked questions about Lynn tap water

Is Lynn tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Lynn. 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 Lynn?

1 public water supplier report drinking-water monitoring for Lynn, Massachusetts to the EPA. Each is listed above with its population served.

What contaminants are in Lynn's water?

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