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Tap water quality report

Allenstown, NH

EPA monitoring detected 10 contaminants across the 3 water suppliers serving Allenstown. 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.

3
water suppliers
1,426
people served
10
contaminants found
New Hampshire rankings Lead in New Hampshire PFAS in New Hampshire

What was found in Allenstown'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
Copper
154.2 µg/L 12%
of the EPA limit 1300 µg/L
Main supplier: BEAR VIEW CROSSING · 800 people · 2017
Highest in the city: 1610 µg/L — CATAMOUNT HILL · 383 people · 2019
3/3 SYR4
Fluoride
1311.45 µg/L 33%
of the EPA limit 4000 µg/L
Highest in the city: OLDE TOWNE · 243 people · 2019
1/3 SYR4
Nitrate
1000 µg/L 10%
of the EPA limit 10000 µg/L
Highest in the city: OLDE TOWNE · 243 people · 2019
1/3 SYR4
Combined Uranium
27.15 µg/L 90%
of the EPA limit 30 µg/L
Highest in the city: OLDE TOWNE · 243 people · 2019
1/3 SYR4
Barium
20.2721 µg/L 1%
of the EPA limit 2000 µg/L
Highest in the city: CATAMOUNT HILL · 383 people · 2019
2/3 SYR4
Lead
6.23 µg/L 42%
of the EPA limit 15 µg/L
Highest in the city: CATAMOUNT HILL · 383 people · 2018
1/3 SYR4
Gross Alpha, Excl. Radon And U
2.9 pCi/L 19%
of the EPA limit 15 pCi/L
Highest in the city: CATAMOUNT HILL · 383 people · 2014
1/3 SYR4
Combined Radium (-226 And -228)
2.7 pCi/L 54%
of the EPA limit 5 pCi/L
Highest in the city: OLDE TOWNE · 243 people · 2017
2/3 SYR4
Arsenic
2.14525 µg/L 21%
of the EPA limit 10 µg/L
Highest in the city: OLDE TOWNE · 243 people · 2019
1/3 SYR4
Lead
0.0600 mg/L 400%
above the EPA limit of 0.0150 mg/L
Main supplier: BEAR VIEW CROSSING · 800 people · 2012
1/3 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 Allenstown

SupplierPopulation served
BEAR VIEW CROSSING 800
CATAMOUNT HILL 383
OLDE TOWNE 243

Frequently asked questions about Allenstown tap water

Is Allenstown tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Allenstown. 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 Allenstown?

3 public water suppliers report drinking-water monitoring for Allenstown, New Hampshire to the EPA. Each is listed above with its population served.

What contaminants are in Allenstown's water?

The contaminants EPA monitoring detected in Allenstown include Copper, Fluoride, Nitrate, Combined Uranium, 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.