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Tap water quality report

Ctwc - Naugatuck Reg-Thomaston

EPA monitoring tested this supplier for 110 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
14
detected
3,789
people served
0
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
Litchfield

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.

0
health-based violations
82
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30
MR Monitoring Resolved 2007-04-01 → 2007-06-30

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
168.4 µg/L 13%
of the EPA limit 1300 µg/L
worst single sample: 191 µg/L
55/55 SYR4 2012–2018
Dibromochloromethane
1.81 µg/L
No EPA limit set
worst single sample: 2.7 µg/L
30/42 SYR4 2012–2019
Bromodichloromethane
1.76 µg/L
No EPA limit set
worst single sample: 2 µg/L
17/42 SYR4 2012–2019
Nitrate
1120 µg/L 11%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
13.535 µg/L 90%
of the EPA limit 15 µg/L
worst single sample: 20.3 µg/L
12/55 SYR4 2012–2018
TTHM
5.805 µg/L 7.3%
of the EPA limit 80 µg/L
worst single sample: 5.9 µg/L
11/11 SYR4 2012–2019
Bromoform
0.9145 µg/L
No EPA limit set
worst single sample: 1 µg/L
10/42 SYR4 2012–2019
Chloroform
1.76 µg/L
No EPA limit set
worst single sample: 2 µg/L
9/42 SYR4 2012–2019
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024
Nitrate-Nitrite
990.5 µg/L 9.9%
of the EPA limit 10000 µg/L
worst single sample: 1120 µg/L
8/8 SYR4 2012–2019
Barium
25.85 µg/L 1.3%
of the EPA limit 2000 µg/L
worst single sample: 26 µg/L
2/2 SYR4 2015–2016
Dibromoacetic Acid
1.18 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
2/10 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
1.485 µg/L 2.5%
of the EPA limit 60 µg/L
worst single sample: 1.5 µg/L
2/10 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
1.3 µg/L 22%
of the EPA limit 6 µg/L
 1/3 SYR4 2013–2019
96 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDichloroacetic AcidDinosebDiquatEthylene DibromideEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MCDERMOTT, GERALD
Phone
860-664-6125
Email
[email protected]

Frequently asked questions about Ctwc - Naugatuck Reg-Thomaston

Is Ctwc - Naugatuck Reg-Thomaston tap water safe to drink?

EPA monitoring detected 14 contaminants in Ctwc - Naugatuck Reg-Thomaston'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 Ctwc - Naugatuck Reg-Thomaston's water?

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

How many people does Ctwc - Naugatuck Reg-Thomaston serve?

Ctwc - Naugatuck Reg-Thomaston reports serving 3,789 people in Connecticut, per its EPA record.

Has Ctwc - Naugatuck Reg-Thomaston had any water quality violations?

The EPA has 82 violations on file for Ctwc - Naugatuck Reg-Thomaston, of which 0 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.