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Tap water quality report

Bristol, NH

EPA monitoring detected 11 contaminants across the 1 water supplier serving Bristol. 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
3,575
people served
11
contaminants found
New Hampshire rankings Lead in New Hampshire PFAS in New Hampshire

What was found in Bristol'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
915.525 µg/L 70%
of the EPA limit 1300 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2019
1/1 SYR4
Nitrate
860 µg/L 8.6%
of the EPA limit 10000 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2019
1/1 SYR4
Fluoride
138 µg/L 3.5%
of the EPA limit 4000 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2019
1/1 SYR4
Barium
35.75 µg/L 1.8%
of the EPA limit 2000 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2019
1/1 SYR4
Lithium
16.2 µg/L
No EPA limit set
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2024
1/1 UCMR-5
Lead
9.6 µg/L 64%
of the EPA limit 15 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.42 pCi/L 28%
of the EPA limit 5 pCi/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2016
1/1 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
0.7800 pCi/L 5.2%
of the EPA limit 15 pCi/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2016
1/1 SYR4
Combined Uranium
0.3900 µg/L 1.3%
of the EPA limit 30 µg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2016
1/1 SYR4
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
Main supplier: BRISTOL WATER WORKS · 3,575 people · 2022
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 Bristol

SupplierPopulation served
BRISTOL WATER WORKS 3,575

Frequently asked questions about Bristol tap water

Is Bristol tap water safe to drink?

EPA testing detected 11 contaminants in the water serving Bristol. 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 Bristol?

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

What contaminants are in Bristol's water?

The contaminants EPA monitoring detected in Bristol include Copper, Nitrate, Fluoride, Barium, Lithium. 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.