Tap WaterIndex

← New Hampshire

Tap water quality report

Cow Hill Wellhouse

EPA monitoring tested this supplier for 69 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
11
detected
150
people served
18
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Private
Counties served
Carroll

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.

18
health-based violations
22
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2015-01-16
TT Health-based Resolved 2015-01-16
TT Health-based Resolved 2015-01-16
TT Health-based Resolved 2015-01-16
MCL Health-based Resolved 1999-09-01 → 1999-09-30
MCL Health-based Resolved 1999-09-01 → 1999-09-30
MCL Health-based Resolved 1999-09-01 → 1999-09-30
MCL Health-based Resolved 1999-09-01 → 1999-09-30
MCL Health-based Resolved 1996-06-01 → 1996-06-30
MCL Health-based Resolved 1996-06-01 → 1996-06-30

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
73.2459 µg/L 5.6%
of the EPA limit 1300 µg/L
worst single sample: 125.679 µg/L
23/23 SYR4 2016–2019
Nitrate
820 µg/L 8.2%
of the EPA limit 10000 µg/L
 12/14 SYR4 2014–2019
Lead
5.6824 µg/L 38%
of the EPA limit 15 µg/L
worst single sample: 7.172 µg/L
8/20 SYR4 2016–2019
Combined Uranium
4.85846 µg/L 16%
of the EPA limit 30 µg/L
worst single sample: 4.94882 µg/L
5/5 SYR4 2014–2017
Barium
2.21235 µg/L 0.1%
of the EPA limit 2000 µg/L
 3/3 SYR4 2016–2019
Fluoride
1909.4 µg/L 48%
of the EPA limit 4000 µg/L
worst single sample: 1910 µg/L
3/3 SYR4 2016–2019
Combined Radium (-226 And -228)
2.205 pCi/L 44%
of the EPA limit 5 pCi/L
worst single sample: 2.3 pCi/L
2/5 SYR4 2014–2017
Dibromochloromethane
0.6000 µg/L
No EPA limit set
 2/7 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
5.705 pCi/L 38%
of the EPA limit 15 pCi/L
worst single sample: 6 pCi/L
2/5 SYR4 2014–2017
TTHM
1.2 µg/L 1.5%
of the EPA limit 80 µg/L
 2/7 SYR4 2014–2017
Bromoform
0.6000 µg/L
No EPA limit set
 1/6 SYR4 2014–2017
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TED JENDZEJEC

Frequently asked questions about Cow Hill Wellhouse

Is Cow Hill Wellhouse tap water safe to drink?

EPA monitoring detected 11 contaminants in Cow Hill Wellhouse'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 Cow Hill Wellhouse's water?

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

How many people does Cow Hill Wellhouse serve?

Cow Hill Wellhouse reports serving 150 people in New Hampshire, per its EPA record.

Has Cow Hill Wellhouse had any water quality violations?

The EPA has 22 violations on file for Cow Hill Wellhouse, of which 18 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.