Is Unh/Durham Water Sys Tap Water Safe? Quality Report

Water source: Surface water
Ownership: State government
Counties served: Strafford

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2002-08-01 → 2002-08-31
MCL	Health-based	Resolved	2002-08-01 → 2002-08-31
MCL	Health-based	Resolved	2002-08-01 → 2002-08-31
MCL	Health-based	Resolved	2002-08-01 → 2002-08-31
MR	Monitoring	Resolved	2003-01-01 → 2003-04-01
MR	Monitoring	Resolved	2003-01-01 → 2003-04-01
MR	Monitoring	Resolved	2003-01-01 → 2003-04-01
MR	Monitoring	Resolved	2003-01-01 → 2003-04-01

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	552.3 µg/L 42% of the EPA limit 1300 µg/L worst single sample: 1100 µg/L	254/417	SYR4	2014–2019
Lead	98.6 µg/L 657% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 420 µg/L	43/407	SYR4	2014–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	33/33	LCR	2024
Bromodichloromethane	13 µg/L No EPA limit set worst single sample: 14 µg/L	28/37	SYR4	2014–2019
Chloroform	56.75 µg/L No EPA limit set worst single sample: 60 µg/L	26/37	SYR4	2014–2019
Dibromochloromethane	2.75 µg/L No EPA limit set worst single sample: 3.2 µg/L	26/37	SYR4	2014–2019
Dichloroacetic Acid	13.9 µg/L No EPA limit set worst single sample: 15 µg/L	22/22	SYR4	2016–2019
TTHM	72.95 µg/L 91% of the EPA limit 80 µg/L worst single sample: 76.2 µg/L	22/22	SYR4	2016–2019
Total Haloacetic Acids (HAA5)	40.75 µg/L 68% of the EPA limit 60 µg/L worst single sample: 42 µg/L	22/22	SYR4	2016–2019
Trichloroacetic Acid	26 µg/L No EPA limit set worst single sample: 28 µg/L	22/22	SYR4	2016–2019
Barium	12.55 µg/L 0.6% of the EPA limit 2000 µg/L worst single sample: 13 µg/L	10/10	SYR4	2014–2019
Fluoride	639.5 µg/L 16% of the EPA limit 4000 µg/L worst single sample: 650 µg/L	8/10	SYR4	2014–2019
Combined Radium (-226 And -228)	1.45 pCi/L 29% of the EPA limit 5 pCi/L worst single sample: 1.5 pCi/L	6/6	SYR4	2016–2017
Combined Uranium	0.9800 µg/L 3.3% of the EPA limit 30 µg/L worst single sample: 1 µg/L	5/6	SYR4	2016–2017
Gross Alpha, Excl. Radon And U	2.1 pCi/L 14% of the EPA limit 15 pCi/L worst single sample: 2.3 pCi/L	5/6	SYR4	2016–2017
Monobromoacetic Acid	1.685 µg/L No EPA limit set worst single sample: 1.7 µg/L	4/22	SYR4	2016–2019
Nitrate	1100 µg/L 11% of the EPA limit 10000 µg/L	4/32	SYR4	2014–2019
Arsenic	1.7 µg/L 17% of the EPA limit 10 µg/L	1/10	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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: APRIL TALON

Frequently asked questions about Unh/Durham Water Sys

Is Unh/Durham Water Sys tap water safe to drink?

EPA monitoring detected 18 contaminants in Unh/Durham Water Sys'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 Unh/Durham Water Sys's water?

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

How many people does Unh/Durham Water Sys serve?

Unh/Durham Water Sys reports serving 16,000 people in New Hampshire, per its EPA record.

Has Unh/Durham Water Sys had any water quality violations?

The EPA has 8 violations on file for Unh/Durham Water Sys, of which 4 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.