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Tap water quality report

Norwich Public Utilities

EPA monitoring tested this supplier for 105 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

105
contaminants tested
20
detected
36,163
people served
59
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Surface water
Ownership
Local government
Counties served
New London

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.

59
health-based violations
94
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2018-07-01 → 2018-09-30
MCL Health-based Resolved 2018-07-01 → 2018-09-30
MCL Health-based Resolved 2018-07-01 → 2018-09-30
MCL Health-based Resolved 2018-07-01 → 2018-09-30
MCL Health-based Resolved 2018-07-01 → 2018-09-30
MCL Health-based Resolved 2018-04-01 → 2018-06-30
MCL Health-based Resolved 2018-04-01 → 2018-06-30
MCL Health-based Resolved 2018-04-01 → 2018-06-30
MCL Health-based Resolved 2018-04-01 → 2018-06-30
MCL Health-based Resolved 2018-04-01 → 2018-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0060 µg/L 3/10 2024
PFOA 0.0067 µg/L 3/10 2024
PFOS 0.0162 µg/L 3/10 2024
PFHXS 0.0125 µg/L 2/10 2024
Pfpea 0.0039 µg/L 1/10 2024

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
TTHM
115.47 µg/L 144%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 240.89 µg/L
234/234 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
66.4 µg/L 111%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 96.6 µg/L
233/233 SYR4 2012–2019
Copper
107.5 µg/L 8.3%
of the EPA limit 1300 µg/L
worst single sample: 710 µg/L
106/106 SYR4 2012–2019
Lead
17.6 µg/L 117%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 39 µg/L
49/106 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 42/42 LCR 2025
Barium
11 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 29 µg/L
34/34 SYR4 2012–2019
Nitrate
2470 µg/L 25%
of the EPA limit 10000 µg/L
worst single sample: 2500 µg/L
24/48 SYR4 2012–2019
Fluoride
992 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1000 µg/L
17/34 SYR4 2012–2019
Chloroform
50.5 µg/L
No EPA limit set
worst single sample: 64 µg/L
16/24 SYR4 2012–2019
Nitrate-Nitrite
2625 µg/L 26%
of the EPA limit 10000 µg/L
worst single sample: 3000 µg/L
16/40 SYR4 2012–2019
Bromodichloromethane
7.65 µg/L
No EPA limit set
worst single sample: 8.7 µg/L
15/24 SYR4 2012–2019
Dibromochloromethane
0.8725 µg/L
No EPA limit set
worst single sample: 0.9000 µg/L
6/24 SYR4 2012–2019
Selenium
2.6 µg/L 5.2%
of the EPA limit 50 µg/L
 2/34 SYR4 2012–2019
Combined Radium (-226 And -228)
1.09 pCi/L 22%
of the EPA limit 5 pCi/L
 1/6 SYR4 2014–2017
Nitrite
860 µg/L 86%
of the EPA limit 1000 µg/L
 1/24 SYR4 2012–2019
85 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, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BRINING, JEFF
Phone
860-213-3120
Email
[email protected]

Frequently asked questions about Norwich Public Utilities

Is Norwich Public Utilities tap water safe to drink?

EPA monitoring detected 20 contaminants in Norwich Public Utilities'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 Norwich Public Utilities's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Copper, Lead, Lead, and others. The full list with the level and data source for each is above.

How many people does Norwich Public Utilities serve?

Norwich Public Utilities reports serving 36,163 people in Connecticut, per its EPA record.

Has Norwich Public Utilities had any water quality violations?

The EPA has 94 violations on file for Norwich Public Utilities, of which 59 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.