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Tap water quality report

Hanover, MA

EPA monitoring detected 25 contaminants across the 1 water supplier serving Hanover. 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
14,984
people served
25
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Hanover'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
Nitrate
1329 µg/L 13%
of the EPA limit 10000 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Fluoride
148 µg/L 3.7%
of the EPA limit 4000 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
TTHM
106.15 µg/L 133%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Chloroform
57.18 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Bromodichloromethane
36.04 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Dibromochloromethane
31.67 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
29 µg/L 48%
of the EPA limit 60 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Xylenes, Total
19.3 µg/L 0.2%
of the EPA limit 10000 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Trichloroacetic Acid
15.67 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Dichloroacetic Acid
13.2 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Bromoform
13.095 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Lithium
9.58 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
Monochloroacetic Acid
5.035 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Dibromoacetic Acid
4.475 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Ethylbenzene
4 µg/L 0.6%
of the EPA limit 700 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Tetrachloroethylene
2.5 µg/L 50%
of the EPA limit 5 µg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.2 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2019
1/1 SYR4
Pfpea
0.0116 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
PFOS
0.0114 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
PFOA
0.0089 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
Pfhxa
0.0086 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
Pfba
0.0080 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
PFBS
0.0066 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 UCMR-5
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
Main supplier: HANOVER WATER DEPT · 14,984 people · 2025
1/1 LCR
Pfhpa
0.0035 µg/L
No EPA limit set
Main supplier: HANOVER WATER DEPT · 14,984 people · 2024
1/1 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 Hanover

SupplierPopulation served
HANOVER WATER DEPT 14,984

Frequently asked questions about Hanover tap water

Is Hanover tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Hanover. 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 Hanover?

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

What contaminants are in Hanover's water?

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