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Tap water quality report

Gloucester, MA

EPA monitoring detected 9 contaminants across the 1 water supplier serving Gloucester. 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
37,440
people served
9
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Gloucester'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
1180 µg/L 30%
of the EPA limit 4000 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Nitrate
430.05 µg/L 4.3%
of the EPA limit 10000 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
TTHM
58.17 µg/L 73%
of the EPA limit 80 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
34.915 µg/L 58%
of the EPA limit 60 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Barium
21 µg/L 1.1%
of the EPA limit 2000 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Cyanide
11 µg/L 5.5%
of the EPA limit 200 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Copper
6.4 µg/L 0.5%
of the EPA limit 1300 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Xylenes, Total
1.2 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 people · 2019
1/1 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: GLOUCESTER PUBLIC UTILITY DIVISION · 37,440 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 Gloucester

SupplierPopulation served
GLOUCESTER PUBLIC UTILITY DIVISION 37,440

Frequently asked questions about Gloucester tap water

Is Gloucester tap water safe to drink?

EPA testing detected 9 contaminants in the water serving Gloucester. 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 Gloucester?

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

What contaminants are in Gloucester's water?

The contaminants EPA monitoring detected in Gloucester include Fluoride, Nitrate, TTHM, Total Haloacetic Acids (HAA5), 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.