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Tap water quality report

Gage Hill

EPA monitoring tested this supplier for 76 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

76
contaminants tested
12
detected
73
people served
4
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Private
Counties served
Hillsborough

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.

4
health-based violations
53
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MR Monitoring Resolved 2010-07-01 → 2010-10-01
MR Monitoring Resolved 2010-07-01 → 2010-10-01
MR Monitoring Resolved 1995-01-01 → 1997-11-18
MR Monitoring Resolved 1995-01-01 → 1997-11-18
MR Monitoring Archived 1994-11-01 → 1994-11-30
MR Monitoring Archived 1994-11-01 → 1994-11-30

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
Combined Uranium
23.8853 µg/L 80%
of the EPA limit 30 µg/L
worst single sample: 25.1 µg/L
24/24 SYR4 2014–2019
Copper
349.372 µg/L 27%
of the EPA limit 1300 µg/L
worst single sample: 507 µg/L
16/16 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
10.78 pCi/L 72%
of the EPA limit 15 pCi/L
worst single sample: 11 pCi/L
12/24 SYR4 2014–2019
Nitrate
2860 µg/L 29%
of the EPA limit 10000 µg/L
 12/12 SYR4 2014–2019
Dibromochloromethane
1.495 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
4/8 SYR4 2014–2019
TTHM
3.39 µg/L 4.2%
of the EPA limit 80 µg/L
worst single sample: 3.6 µg/L
4/8 SYR4 2014–2019
Bromoform
1.16 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
3/8 SYR4 2014–2019
Combined Radium (-226 And -228)
3.15 pCi/L 63%
of the EPA limit 5 pCi/L
worst single sample: 3.3 pCi/L
3/3 SYR4 2014–2017
Barium
30.475 µg/L 1.5%
of the EPA limit 2000 µg/L
worst single sample: 30.9 µg/L
2/2 SYR4 2016–2019
Bromodichloromethane
0.7850 µg/L
No EPA limit set
worst single sample: 0.8000 µg/L
2/8 SYR4 2014–2019
Lead
1.6 µg/L 11%
of the EPA limit 15 µg/L
 2/14 SYR4 2014–2017
Lead
0.0160 mg/L 107%
above the EPA limit of 0.0150 mg/L
 1/1 LCR 1993
64 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, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LESLIE MORGAN

Frequently asked questions about Gage Hill

Is Gage Hill tap water safe to drink?

EPA monitoring detected 12 contaminants in Gage Hill'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 Gage Hill's water?

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

How many people does Gage Hill serve?

Gage Hill reports serving 73 people in New Hampshire, per its EPA record.

Has Gage Hill had any water quality violations?

The EPA has 53 violations on file for Gage Hill, 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.