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Tap water quality report

Bristol Water Works

EPA monitoring tested this supplier for 99 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

99
contaminants tested
11
detected
3,575
people served
16
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Local government
Counties served
Grafton

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

16
health-based violations
20
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2011-01-01 → 2011-01-31
MCL Health-based Resolved 2011-01-01 → 2011-01-31
MCL Health-based Resolved 2011-01-01 → 2011-01-31
MCL Health-based Resolved 2011-01-01 → 2011-01-31
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2007-06-01 → 2007-06-30
MCL Health-based Resolved 2007-06-01 → 2007-06-30

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
915.525 µg/L 70%
of the EPA limit 1300 µg/L
worst single sample: 1090 µg/L
46/46 SYR4 2014–2019
Lead
9.6 µg/L 64%
of the EPA limit 15 µg/L
worst single sample: 38.9 µg/L
36/40 SYR4 2016–2019
Nitrate
860 µg/L 8.6%
of the EPA limit 10000 µg/L
 12/36 SYR4 2014–2019
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2022
Barium
35.75 µg/L 1.8%
of the EPA limit 2000 µg/L
worst single sample: 37 µg/L
6/6 SYR4 2014–2019
Combined Radium (-226 And -228)
1.42 pCi/L 28%
of the EPA limit 5 pCi/L
worst single sample: 1.5 pCi/L
3/3 SYR4 2016
Combined Uranium
0.3900 µg/L 1.3%
of the EPA limit 30 µg/L
worst single sample: 0.4000 µg/L
3/3 SYR4 2016
Fluoride
138 µg/L 3.5%
of the EPA limit 4000 µg/L
worst single sample: 140 µg/L
2/6 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
0.7800 pCi/L 5.2%
of the EPA limit 15 pCi/L
worst single sample: 0.8000 pCi/L
2/3 SYR4 2016
Lithium
16.2 µg/L
No EPA limit set
 2/6 UCMR-5 2024
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/6 SYR4 2014–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CARRIE NYBERG

Frequently asked questions about Bristol Water Works

Is Bristol Water Works tap water safe to drink?

EPA monitoring detected 11 contaminants in Bristol Water Works's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Bristol Water Works's water?

EPA monitoring detected Copper, Lead, Nitrate, Lead, Barium, and others. The full list with the level and data source for each is above.

How many people does Bristol Water Works serve?

Bristol Water Works reports serving 3,575 people in New Hampshire, per its EPA record.

Has Bristol Water Works had any water quality violations?

The EPA has 20 violations on file for Bristol Water Works, of which 16 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.