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.
42
health-based violations
174
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2020-11-01 |
| TT | Health-based | Resolved | 2020-11-01 |
| TT | Health-based | Resolved | 2020-11-01 |
| TT | Health-based | Resolved | 2020-11-01 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2018-07-01 → 2018-09-30 |
| MCL | Health-based | Resolved | 2018-07-01 → 2018-09-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
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.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 336.4 µg/L 26% of the EPA limit 1300 µg/L
worst single sample: 861 µg/L | 94/118 | SYR4 | 2014–2019 |
| Arsenic | 10.15 µg/L 102% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 34 µg/L | 60/124 | SYR4 | 2014–2019 |
| Bromodichloromethane | 7.685 µg/L No EPA limit set
worst single sample: 16 µg/L | 44/71 | SYR4 | 2014–2019 |
| Dibromochloromethane | 6.4 µg/L No EPA limit set
worst single sample: 12 µg/L | 41/71 | SYR4 | 2014–2019 |
| Chloroform | 9.7 µg/L No EPA limit set
worst single sample: 18 µg/L | 35/71 | SYR4 | 2014–2019 |
| Combined Radium (-226 And -228) | 9.865 pCi/L 197% of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 16 pCi/L | 32/34 | SYR4 | 2014–2019 |
| Combined Uranium | 9.5 µg/L 32% of the EPA limit 30 µg/L
worst single sample: 16 µg/L | 31/36 | SYR4 | 2014–2019 |
| Lead | 7 µg/L 47% of the EPA limit 15 µg/L
worst single sample: 9 µg/L | 31/118 | SYR4 | 2014–2019 |
| Gross Alpha, Excl. Radon And U | 21.585 pCi/L 144% of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 30.7 pCi/L | 24/30 | SYR4 | 2014–2019 |
| Barium | 217.7 µg/L 11% of the EPA limit 2000 µg/L
worst single sample: 276 µg/L | 23/24 | SYR4 | 2014–2019 |
| TTHM | 20.945 µg/L 26% of the EPA limit 80 µg/L
worst single sample: 22 µg/L | 22/36 | SYR4 | 2016–2019 |
| Chromium | 17.1 µg/L 17% of the EPA limit 100 µg/L
worst single sample: 19 µg/L | 20/24 | SYR4 | 2014–2019 |
| Fluoride | 842 µg/L 21% of the EPA limit 4000 µg/L
worst single sample: 860 µg/L | 19/24 | SYR4 | 2014–2019 |
| Lithium | 26.9 µg/L No EPA limit set | 19/24 | UCMR-5 | 2024 |
| Bromoform | 4.17 µg/L No EPA limit set
worst single sample: 4.3 µg/L | 14/71 | SYR4 | 2014–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 10/10 | LCR | 2024 |
| Selenium | 7.55 µg/L 15% of the EPA limit 50 µg/L
worst single sample: 10 µg/L | 8/24 | SYR4 | 2014–2019 |
| Total Haloacetic Acids (HAA5) | 14.36 µg/L 24% of the EPA limit 60 µg/L
worst single sample: 14.4 µg/L | 5/8 | SYR4 | 2016–2019 |
| Dibromoacetic Acid | 2.51 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 4/8 | SYR4 | 2016–2019 |
| Dichloroacetic Acid | 8.44 µg/L No EPA limit set
worst single sample: 8.8 µg/L | 4/8 | SYR4 | 2016–2019 |
| Nitrate | 1900 µg/L 19% of the EPA limit 10000 µg/L | 4/146 | SYR4 | 2014–2019 |
| Trichloroacetic Acid | 5.555 µg/L No EPA limit set
worst single sample: 5.6 µg/L | 4/8 | SYR4 | 2016–2019 |
| Di(2-ethylhexyl) Phthalate | 1.6 µg/L 27% of the EPA limit 6 µg/L | 1/34 | SYR4 | 2014–2019 |
| Toluene | 0.5700 µg/L 0.1% of the EPA limit 1000 µg/L | 1/67 | SYR4 | 2014–2019 |
78 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, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Hampstead Area Water
Is Hampstead Area Water tap water safe to drink?
EPA monitoring detected 29 contaminants in Hampstead Area Water'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 Hampstead Area Water's water?
EPA monitoring detected Copper, Arsenic, Bromodichloromethane, Dibromochloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Hampstead Area Water serve?
Hampstead Area Water reports serving 7,153 people in New Hampshire, per its EPA record.
Has Hampstead Area Water had any water quality violations?
The EPA has 174 violations on file for Hampstead Area Water, of which 42 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.