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Tap water quality report

Twin Hills Water District

EPA monitoring tested this supplier for 73 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
7
detected
156
people served
32
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Local government
Counties served
Tolland

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.

32
health-based violations
60
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
TT Health-based Resolved 2023-04-12
TT Health-based Resolved 2023-04-12
TT Health-based Resolved 2023-04-12
TT Health-based Resolved 2023-04-12
TT Health-based Resolved 2022-07-09
TT Health-based Resolved 2022-07-09
TT Health-based Resolved 2022-07-09
TT Health-based Resolved 2022-07-09
TT Health-based Resolved 2021-11-05

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
60 µg/L 4.6%
of the EPA limit 1300 µg/L
worst single sample: 69 µg/L
16/20 SYR4 2012–2018
Nitrate
160 µg/L 1.6%
of the EPA limit 10000 µg/L
 10/20 SYR4 2012–2019
Lead
0.0012 mg/L 8%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024
Nitrate-Nitrite
150 µg/L 1.5%
of the EPA limit 10000 µg/L
worst single sample: 160 µg/L
5/10 SYR4 2012–2019
Barium
61.75 µg/L 3.1%
of the EPA limit 2000 µg/L
worst single sample: 67 µg/L
4/4 SYR4 2012–2018
Fluoride
319.5 µg/L 8%
of the EPA limit 4000 µg/L
worst single sample: 330 µg/L
4/4 SYR4 2012–2018
Lead
13 µg/L 87%
of the EPA limit 15 µg/L
 1/20 SYR4 2012–2018
66 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 TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PERETTO, BRYAN
Phone
860-337-6337
Email
[email protected]

Frequently asked questions about Twin Hills Water District

Is Twin Hills Water District tap water safe to drink?

EPA monitoring detected 7 contaminants in Twin Hills Water District'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 Twin Hills Water District's water?

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

How many people does Twin Hills Water District serve?

Twin Hills Water District reports serving 156 people in Connecticut, per its EPA record.

Has Twin Hills Water District had any water quality violations?

The EPA has 60 violations on file for Twin Hills Water District, of which 32 are health-based (a contaminant limit or required treatment was breached) and 2 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.