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Tap water quality report

Lawrence, MA

EPA monitoring detected 20 contaminants across the 1 water supplier serving Lawrence. 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
89,143
people served
20
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Lawrence'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
998 µg/L 25%
of the EPA limit 4000 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Nitrate
570 µg/L 5.7%
of the EPA limit 10000 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
TTHM
97.85 µg/L 122%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Chloroform
85.655 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Chlorite
85 µg/L 8.5%
of the EPA limit 1000 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
52.865 µg/L 88%
of the EPA limit 60 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Trichloroacetic Acid
28.7 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Bromodichloromethane
20.54 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Dichloroacetic Acid
20.085 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Barium
11 µg/L 0.5%
of the EPA limit 2000 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Dibromochloromethane
7.6 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Monochloroacetic Acid
4.2 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.76 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Bromoform
1.6 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.6 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Pentachlorophenol
0.0900 µg/L 9%
of the EPA limit 1 µg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2019
1/1 SYR4
Pfhxa
0.0031 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2024
1/1 UCMR-5
Pfpea
0.0030 µg/L
No EPA limit set
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2024
1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: LAWRENCE WATER WORKS · 89,143 people · 2025
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 Lawrence

SupplierPopulation served
LAWRENCE WATER WORKS 89,143

Frequently asked questions about Lawrence tap water

Is Lawrence tap water safe to drink?

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

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

What contaminants are in Lawrence's water?

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