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Tap water quality report

Keene Water Dept

EPA monitoring tested this supplier for 107 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

107
contaminants tested
13
detected
30,000
people served
54
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Surface water
Ownership
Local government
Counties served
Cheshire

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.

54
health-based violations
78
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2012-11-01 → 2012-12-01
TT Health-based Resolved 2012-11-01 → 2012-12-01
TT Health-based Resolved 2012-11-01 → 2012-12-01
TT Health-based Resolved 2012-11-01 → 2012-12-01
TT Health-based Resolved 2012-09-01 → 2012-10-01
TT Health-based Resolved 2012-09-01 → 2012-10-01
TT Health-based Resolved 2012-09-01 → 2012-10-01
TT Health-based Resolved 2012-09-01 → 2012-10-01
TT Health-based Resolved 2012-07-01 → 2012-08-01
TT Health-based Resolved 2012-07-01 → 2012-08-01

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
950.5 µg/L 73%
of the EPA limit 1300 µg/L
worst single sample: 23000 µg/L
300/322 SYR4 2014–2019
Lead
12.05 µg/L 80%
of the EPA limit 15 µg/L
worst single sample: 280 µg/L
96/324 SYR4 2014–2019
Chloroform
60.55 µg/L
No EPA limit set
worst single sample: 70.5 µg/L
55/79 SYR4 2014–2019
Bromodichloromethane
5.44 µg/L
No EPA limit set
worst single sample: 6.4 µg/L
53/79 SYR4 2014–2019
TTHM
66.1 µg/L 83%
of the EPA limit 80 µg/L
worst single sample: 76.9 µg/L
53/78 SYR4 2014–2019
Nitrate
3000 µg/L 30%
of the EPA limit 10000 µg/L
worst single sample: 3700 µg/L
50/62 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
54.8 µg/L 91%
of the EPA limit 60 µg/L
worst single sample: 58.7 µg/L
41/49 SYR4 2017–2019
Trichloroacetic Acid
29.8 µg/L
No EPA limit set
worst single sample: 34.5 µg/L
41/49 SYR4 2017–2019
Dichloroacetic Acid
22.22 µg/L
No EPA limit set
worst single sample: 25.3 µg/L
39/49 SYR4 2017–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2024
Dibromochloromethane
2.535 µg/L
No EPA limit set
worst single sample: 3.3 µg/L
18/79 SYR4 2014–2019
Bromoform
0.5000 µg/L
No EPA limit set
 1/79 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
0.1000 pCi/L 0.7%
of the EPA limit 15 pCi/L
 1/5 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
AARON COSTA

Frequently asked questions about Keene Water Dept

Is Keene Water Dept tap water safe to drink?

EPA monitoring detected 13 contaminants in Keene 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 Keene Water Dept's water?

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

How many people does Keene Water Dept serve?

Keene Water Dept reports serving 30,000 people in New Hampshire, per its EPA record.

Has Keene Water Dept had any water quality violations?

The EPA has 78 violations on file for Keene Water Dept, of which 54 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.