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Tap water quality report

New Castle, NH

EPA monitoring detected 11 contaminants across the 1 water supplier serving New Castle. 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
910
people served
11
contaminants found
New Hampshire rankings Lead in New Hampshire PFAS in New Hampshire

What was found in New Castle'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
139.2 µg/L 11%
of the EPA limit 1300 µg/L
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
TTHM
110 µg/L 138%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Chloroform
94 µg/L
No EPA limit set
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
57.19 µg/L 95%
of the EPA limit 60 µg/L
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Trichloroacetic Acid
40.2305 µg/L
No EPA limit set
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Dichloroacetic Acid
26 µg/L
No EPA limit set
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Bromodichloromethane
14.95 µg/L
No EPA limit set
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Lead
12.96 µg/L 86%
of the EPA limit 15 µg/L
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Dibromochloromethane
2.46 µg/L
No EPA limit set
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Monochloroacetic Acid
2.4 µg/L
No EPA limit set
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2019
1/1 SYR4
Lead
0.0170 mg/L 113%
above the EPA limit of 0.0150 mg/L
Main supplier: NEW CASTLE WATER WORKS · 910 people · 2007
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 New Castle

SupplierPopulation served
NEW CASTLE WATER WORKS 910

Frequently asked questions about New Castle tap water

Is New Castle tap water safe to drink?

EPA testing detected 11 contaminants in the water serving New Castle. 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 New Castle?

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

What contaminants are in New Castle's water?

The contaminants EPA monitoring detected in New Castle include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Trichloroacetic Acid. 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.