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Tap water quality report

Pembroke Water Works

EPA monitoring tested this supplier for 105 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

105
contaminants tested
12
detected
5,200
people served
45
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Local government
Counties served
Merrimack

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.

45
health-based violations
145
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-10-01 → 2009-10-31
MCL Health-based Resolved 2009-10-01 → 2009-10-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0059 µg/L 1/8 2023
PFOS 0.0065 µg/L 1/8 2023

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
705 µg/L 54%
of the EPA limit 1300 µg/L
worst single sample: 770 µg/L
51/51 SYR4 2014–2019
Nitrate
1065 µg/L 11%
of the EPA limit 10000 µg/L
worst single sample: 1100 µg/L
28/60 SYR4 2014–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2024
Barium
25.5 µg/L 1.3%
of the EPA limit 2000 µg/L
worst single sample: 26 µg/L
11/11 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
10.125 pCi/L 68%
of the EPA limit 15 pCi/L
worst single sample: 13.2 pCi/L
6/6 SYR4 2015–2018
Combined Radium (-226 And -228)
0.5600 pCi/L 11%
of the EPA limit 5 pCi/L
worst single sample: 0.6000 pCi/L
5/5 SYR4 2015
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 2/40 SYR4 2015–2018
Bromoform
0.5400 µg/L
No EPA limit set
 1/24 SYR4 2014–2019
Fluoride
130 µg/L 3.3%
of the EPA limit 4000 µg/L
 1/11 SYR4 2014–2019
TTHM
0.5400 µg/L 0.7%
of the EPA limit 80 µg/L
 1/4 SYR4 2018–2019
93 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, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LYNNE BLEDSOE SAINT COEUR

Frequently asked questions about Pembroke Water Works

Is Pembroke Water Works tap water safe to drink?

EPA monitoring detected 12 contaminants in Pembroke 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 Pembroke Water Works's water?

EPA monitoring detected Copper, Nitrate, Lead, Barium, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Pembroke Water Works serve?

Pembroke Water Works reports serving 5,200 people in New Hampshire, per its EPA record.

Has Pembroke Water Works had any water quality violations?

The EPA has 145 violations on file for Pembroke Water Works, of which 45 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.