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Tap water quality report

New London Dept. of Public Utilities

EPA monitoring tested this supplier for 104 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
12
detected
27,620
people served
0
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.

0
health-based violations
189
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2024-07-01
Other Monitoring Resolved 2023-07-01
MR Monitoring Resolved 2020-12-30
Other Monitoring Resolved 2017-08-10
Other Monitoring Resolved 2017-08-10
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2017-07-01
MR Monitoring Resolved 2017-02-01 → 2017-02-28
MR Monitoring Resolved 2017-02-01 → 2017-02-28

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
76.275 µg/L 95%
of the EPA limit 80 µg/L
worst single sample: 116.3 µg/L
128/128 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
34.6 µg/L 58%
of the EPA limit 60 µg/L
worst single sample: 48.5 µg/L
128/128 SYR4 2012–2019
Copper
161 µg/L 12%
of the EPA limit 1300 µg/L
worst single sample: 260 µg/L
40/48 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 30/30 LCR 2025
Barium
6 µg/L 0.3%
of the EPA limit 2000 µg/L
 16/16 SYR4 2012–2019
Nitrate
88 µg/L 0.9%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Nitrate-Nitrite
70.75 µg/L 0.7%
of the EPA limit 10000 µg/L
worst single sample: 88 µg/L
16/16 SYR4 2012–2019
Fluoride
926 µg/L 23%
of the EPA limit 4000 µg/L
worst single sample: 940 µg/L
15/16 SYR4 2012–2019
Lead
7.8 µg/L 52%
of the EPA limit 15 µg/L
 15/48 SYR4 2012–2019
Bromodichloromethane
3.59 µg/L
No EPA limit set
worst single sample: 3.8 µg/L
8/8 SYR4 2012–2019
Chloroform
14.86 µg/L
No EPA limit set
worst single sample: 15 µg/L
8/8 SYR4 2012–2019
Dibromochloromethane
0.6000 µg/L
No EPA limit set
 3/8 SYR4 2012–2019
92 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, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PALMERONE, DEREK N
Phone
860-405-6475
Email
[email protected]

Frequently asked questions about New London Dept. of Public Utilities

Is New London Dept. of Public Utilities tap water safe to drink?

EPA monitoring detected 12 contaminants in New London Dept. of 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 New London Dept. of Public Utilities's water?

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

How many people does New London Dept. of Public Utilities serve?

New London Dept. of Public Utilities reports serving 27,620 people in Connecticut, per its EPA record.

Has New London Dept. of Public Utilities had any water quality violations?

The EPA has 189 violations on file for New London Dept. of Public Utilities, 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.