Is Newmarket Water Works Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Rockingham

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

246

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	1997-12-01 → 1997-12-31
TT	Health-based	Resolved	1997-12-01 → 1997-12-31
MCL	Health-based	Resolved	1997-12-01 → 1997-12-31
MCL	Health-based	Resolved	1997-12-01 → 1997-12-31
MCL	Health-based	Resolved	1997-12-01 → 1997-12-31
MCL	Health-based	Resolved	1997-12-01 → 1997-12-31
TT	Health-based	Resolved	1997-11-01 → 1997-11-30
TT	Health-based	Resolved	1997-11-01 → 1997-11-30
TT	Health-based	Resolved	1997-10-01 → 1997-10-31
TT	Health-based	Resolved	1997-10-01 → 1997-10-31

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 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	111.01 µg/L 8.5% of the EPA limit 1300 µg/L worst single sample: 160 µg/L	127/148	SYR4	2014–2019
Nitrate	3275 µg/L 33% of the EPA limit 10000 µg/L worst single sample: 3300 µg/L	26/34	SYR4	2014–2019
Lead	42 µg/L 280% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 84 µg/L	23/142	SYR4	2014–2019
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	20/20	LCR	2024
Arsenic	5.76 µg/L 58% of the EPA limit 10 µg/L worst single sample: 6.4 µg/L	17/18	SYR4	2015–2019
Bromoform	17 µg/L No EPA limit set	15/31	SYR4	2014–2019
Dibromochloromethane	3.535 µg/L No EPA limit set worst single sample: 4.9 µg/L	14/31	SYR4	2014–2019
Nitrate-Nitrite	3240 µg/L 32% of the EPA limit 10000 µg/L worst single sample: 3300 µg/L	13/17	SYR4	2014–2019
TTHM	21.25 µg/L 27% of the EPA limit 80 µg/L worst single sample: 24 µg/L	12/12	SYR4	2014–2019
Barium	21.625 µg/L 1.1% of the EPA limit 2000 µg/L worst single sample: 22.2 µg/L	6/6	SYR4	2015–2019
Bromodichloromethane	1.6 µg/L No EPA limit set	6/31	SYR4	2014–2019
Combined Radium (-226 And -228)	1.25 pCi/L 25% of the EPA limit 5 pCi/L worst single sample: 1.3 pCi/L	6/6	SYR4	2015–2017
Dibromoacetic Acid	2.975 µg/L No EPA limit set worst single sample: 3.3 µg/L	6/12	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	2.975 µg/L 5% of the EPA limit 60 µg/L worst single sample: 3.3 µg/L	6/12	SYR4	2014–2019
Gross Alpha, Excl. Radon And U	2 pCi/L 13% of the EPA limit 15 pCi/L	5/6	SYR4	2015–2017
Combined Uranium	1 µg/L 3.3% of the EPA limit 30 µg/L	4/7	SYR4	2015–2018
Chloroform	0.8800 µg/L No EPA limit set worst single sample: 0.9000 µg/L	3/31	SYR4	2014–2019
Di(2-ethylhexyl) Phthalate	1.295 µg/L 22% of the EPA limit 6 µg/L worst single sample: 1.3 µg/L	2/17	SYR4	2014–2019

89 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 TetrachlorideChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDichloroacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BERNARD TROTTIER

Frequently asked questions about Newmarket Water Works

Is Newmarket Water Works tap water safe to drink?

EPA monitoring detected 18 contaminants in Newmarket 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 Newmarket Water Works's water?

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

How many people does Newmarket Water Works serve?

Newmarket Water Works reports serving 5,030 people in New Hampshire, per its EPA record.

Has Newmarket Water Works had any water quality violations?

The EPA has 246 violations on file for Newmarket Water Works, of which 17 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.