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Tap water quality report

Keene, NH

EPA monitoring detected 13 contaminants across the 1 water supplier serving Keene. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
30,000
people served
13
contaminants found
New Hampshire rankings Lead in New Hampshire PFAS in New Hampshire

What was found in Keene's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
23000 µg/L 1769%
of the EPA limit, in the worst sample — 1300 µg/L
 1/1 SYR4
Nitrate
3700 µg/L 37%
of the EPA limit 10000 µg/L
 1/1 SYR4
Lead
280 µg/L 1867%
of the EPA limit, in the worst sample — 15 µg/L
 1/1 SYR4
TTHM
76.9 µg/L 96%
of the EPA limit 80 µg/L
 1/1 SYR4
Chloroform
70.5 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
58.7 µg/L 98%
of the EPA limit 60 µg/L
 1/1 SYR4
Trichloroacetic Acid
34.5 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
25.3 µg/L
No EPA limit set
 1/1 SYR4
Bromodichloromethane
6.4 µg/L
No EPA limit set
 1/1 SYR4
Dibromochloromethane
3.3 µg/L
No EPA limit set
 1/1 SYR4
Bromoform
0.5000 µg/L
No EPA limit set
 1/1 SYR4
Gross Alpha, Excl. Radon And U
0.1000 pCi/L 0.7%
of the EPA limit 15 pCi/L
 1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 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 single worst sample on record — 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 Keene

SupplierPopulation served
KEENE WATER DEPT 30,000

Frequently asked questions about Keene tap water

Is Keene tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Keene. 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 Keene?

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

What contaminants are in Keene's water?

The contaminants EPA monitoring detected in Keene include Copper, Nitrate, Lead, TTHM, Chloroform. The full list, with the highest level found 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.