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Tap water quality report

Halcyon Hill

EPA monitoring tested this supplier for 76 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

76
contaminants tested
11
detected
58
people served
18
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Private
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.

18
health-based violations
495
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2016-07-01
TT Health-based Resolved 2016-07-01
MCL Health-based Resolved 2008-07-01 → 2008-09-30
MCL Health-based Resolved 2008-07-01 → 2008-09-30
MCL Health-based Resolved 2008-07-01 → 2008-09-30
MCL Health-based Resolved 2008-07-01 → 2008-09-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30

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
Combined Uranium
28.8 µg/L 96%
of the EPA limit 30 µg/L
worst single sample: 32.78 µg/L
25/25 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
14.59 pCi/L 97%
of the EPA limit 15 pCi/L
worst single sample: 14.7 pCi/L
23/25 SYR4 2014–2019
Copper
554.4 µg/L 43%
of the EPA limit 1300 µg/L
worst single sample: 801 µg/L
13/14 SYR4 2014–2018
Nitrate
2400 µg/L 24%
of the EPA limit 10000 µg/L
 12/12 SYR4 2014–2019
Lead
13.6 µg/L 91%
of the EPA limit 15 µg/L
worst single sample: 19 µg/L
10/14 SYR4 2014–2018
Combined Radium (-226 And -228)
1.28 pCi/L 26%
of the EPA limit 5 pCi/L
worst single sample: 1.3 pCi/L
3/3 SYR4 2017–2019
Chromium
4.9 µg/L 4.9%
of the EPA limit 100 µg/L
worst single sample: 5 µg/L
2/2 SYR4 2014–2017
Dibromochloromethane
1.375 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
2/8 SYR4 2014–2019
Barium
8 µg/L 0.4%
of the EPA limit 2000 µg/L
 1/2 SYR4 2014–2017
Bromodichloromethane
1 µg/L
No EPA limit set
 1/8 SYR4 2014–2019
Bromoform
1.3 µg/L
No EPA limit set
 1/8 SYR4 2014–2019
65 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 TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
STACIE REVITSKY

Frequently asked questions about Halcyon Hill

Is Halcyon Hill tap water safe to drink?

EPA monitoring detected 11 contaminants in Halcyon 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 Halcyon Hill's water?

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

How many people does Halcyon Hill serve?

Halcyon Hill reports serving 58 people in New Hampshire, per its EPA record.

Has Halcyon Hill had any water quality violations?

The EPA has 495 violations on file for Halcyon Hill, 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.