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Tap water quality report

Quonnipaug Hills - Section I

EPA monitoring tested this supplier for 73 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
10
detected
27
people served
36
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
New Haven

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.

36
health-based violations
245
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-09-01 → 2011-09-30
MCL Health-based Resolved 2011-09-01 → 2011-09-30
MCL Health-based Resolved 2011-09-01 → 2011-09-30
MCL Health-based Resolved 2011-09-01 → 2011-09-30
MCL Health-based Resolved 2011-06-01 → 2011-06-30
MCL Health-based Resolved 2011-06-01 → 2011-06-30

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
129.1 µg/L 9.9%
of the EPA limit 1300 µg/L
worst single sample: 190 µg/L
15/15 SYR4 2013–2019
Nitrate
140 µg/L 1.4%
of the EPA limit 10000 µg/L
 12/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Lead
4.65 µg/L 31%
of the EPA limit 15 µg/L
worst single sample: 5.2 µg/L
6/15 SYR4 2013–2019
Nitrate-Nitrite
137.5 µg/L 1.4%
of the EPA limit 10000 µg/L
worst single sample: 140 µg/L
6/8 SYR4 2012–2019
Barium
122.6 µg/L 6.1%
of the EPA limit 2000 µg/L
worst single sample: 124 µg/L
3/3 SYR4 2012–2018
Combined Uranium
3.134 µg/L 10%
of the EPA limit 30 µg/L
worst single sample: 3.16 µg/L
3/3 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
2.6895 pCi/L 18%
of the EPA limit 15 pCi/L
worst single sample: 2.7 pCi/L
2/3 SYR4 2013–2019
Chromium
3.1 µg/L 3.1%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2018
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 1/3 SYR4 2012–2018
63 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
KRYGIER, WILLIAM P.
Phone
203-488-9500
Email
[email protected]

Frequently asked questions about Quonnipaug Hills - Section I

Is Quonnipaug Hills - Section I tap water safe to drink?

EPA monitoring detected 10 contaminants in Quonnipaug Hills - Section I'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 Quonnipaug Hills - Section I's water?

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

How many people does Quonnipaug Hills - Section I serve?

Quonnipaug Hills - Section I reports serving 27 people in Connecticut, per its EPA record.

Has Quonnipaug Hills - Section I had any water quality violations?

The EPA has 245 violations on file for Quonnipaug Hills - Section I, of which 36 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.