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Tap water quality report

Ctwc - Naugatuck Reg-Terryville

EPA monitoring tested this supplier for 109 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
15
detected
5,607
people served
9
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.

9
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1998-06-01 → 1998-06-30
MCL Health-based Resolved 1998-06-01 → 1998-06-30
MCL Health-based Resolved 1998-06-01 → 1998-06-30
MCL Health-based Resolved 1998-06-01 → 1998-06-30
MCL Health-based Resolved 1998-06-01 → 1998-06-30
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31
MCL Health-based Resolved 1993-08-01 → 1993-08-31

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
215 µg/L 17%
of the EPA limit 1300 µg/L
worst single sample: 258 µg/L
65/65 SYR4 2014–2018
Nitrate
1790 µg/L 18%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Dibromochloromethane
7.7 µg/L
No EPA limit set
 12/17 SYR4 2012–2019
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Bromodichloromethane
6.115 µg/L
No EPA limit set
worst single sample: 6.7 µg/L
10/17 SYR4 2012–2019
Bromoform
4.935 µg/L
No EPA limit set
worst single sample: 5.7 µg/L
10/17 SYR4 2012–2019
Lead
11.82 µg/L 79%
of the EPA limit 15 µg/L
worst single sample: 13.8 µg/L
10/65 SYR4 2014–2018
Chloroform
5.22 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
9/17 SYR4 2012–2019
TTHM
21.24 µg/L 27%
of the EPA limit 80 µg/L
worst single sample: 23.2 µg/L
9/9 SYR4 2012–2019
Dibromoacetic Acid
1.93 µg/L
No EPA limit set
worst single sample: 2 µg/L
8/9 SYR4 2012–2019
Nitrate-Nitrite
1755 µg/L 18%
of the EPA limit 10000 µg/L
worst single sample: 1790 µg/L
8/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.65 µg/L 6.1%
of the EPA limit 60 µg/L
worst single sample: 4 µg/L
8/9 SYR4 2012–2019
Dichloroacetic Acid
2 µg/L
No EPA limit set
 4/9 SYR4 2012–2019
Barium
37 µg/L 1.9%
of the EPA limit 2000 µg/L
worst single sample: 38 µg/L
3/3 SYR4 2014–2018
Di(2-ethylhexyl) Phthalate
1.2 µg/L 20%
of the EPA limit 6 µg/L
 1/4 SYR4 2013–2017
94 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene 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-Terryville

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

EPA monitoring detected 15 contaminants in Ctwc - Naugatuck Reg-Terryville'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-Terryville's water?

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

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

Ctwc - Naugatuck Reg-Terryville reports serving 5,607 people in Connecticut, per its EPA record.

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

The EPA has 9 violations on file for Ctwc - Naugatuck Reg-Terryville, of which 9 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.