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Tap water quality report

Hanover Water Dept

EPA monitoring tested this supplier for 106 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

106
contaminants tested
12
detected
9,600
people served
126
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Surface 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.

126
health-based violations
162
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-10-01 → 2014-10-31
MCL Health-based Resolved 2014-10-01 → 2014-10-31
MCL Health-based Resolved 2014-10-01 → 2014-10-31
MCL Health-based Resolved 2014-10-01 → 2014-10-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MCL Health-based Resolved 2013-07-01 → 2013-07-31
MCL Health-based Resolved 2013-07-01 → 2013-07-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
700 µg/L 54%
of the EPA limit 1300 µg/L
 45/46 SYR4 2014–2019
Bromodichloromethane
4.9 µg/L
No EPA limit set
 42/42 SYR4 2014–2019
Chloroform
69 µg/L
No EPA limit set
 42/42 SYR4 2014–2019
Dichloroacetic Acid
21 µg/L
No EPA limit set
 40/40 SYR4 2014–2019
TTHM
72.3 µg/L 90%
of the EPA limit 80 µg/L
 40/42 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
52 µg/L 87%
of the EPA limit 60 µg/L
 40/40 SYR4 2014–2019
Trichloroacetic Acid
32 µg/L
No EPA limit set
 40/40 SYR4 2014–2019
Fluoride
800 µg/L 20%
of the EPA limit 4000 µg/L
 22/26 SYR4 2014–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2023
Lead
30 µg/L 200%
of the EPA limit, in the worst sample — 15 µg/L
 14/40 SYR4 2014–2017
Barium
15 µg/L 0.8%
of the EPA limit 2000 µg/L
 6/6 SYR4 2014–2019
Combined Radium (-226 And -228)
0.3000 pCi/L 6%
of the EPA limit 5 pCi/L
 1/1 SYR4 2015
94 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitrateNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CHRISTINA HALL

Frequently asked questions about Hanover Water Dept

Is Hanover Water Dept tap water safe to drink?

EPA monitoring detected 12 contaminants in Hanover Water Dept'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 Hanover Water Dept's water?

EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.

How many people does Hanover Water Dept serve?

Hanover Water Dept reports serving 9,600 people in New Hampshire, per its EPA record.

Has Hanover Water Dept had any water quality violations?

The EPA has 162 violations on file for Hanover Water Dept, of which 126 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.