Is East Lyme Water & Sewer Commission Tap Water Safe? Quality Report

Water source: SWP
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.

health-based violations

528

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2011-08-01 → 2011-08-31
MCL	Health-based	Resolved	2006-08-01 → 2006-08-31
MCL	Health-based	Resolved	2006-08-01 → 2006-08-31
MCL	Health-based	Resolved	2006-08-01 → 2006-08-31
MCL	Health-based	Resolved	2006-08-01 → 2006-08-31
MCL	Health-based	Resolved	2001-11-01 → 2001-11-30
MCL	Health-based	Resolved	2001-11-01 → 2001-11-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFOA	0.0092 µg/L	4/14	2024
PFOS	0.0072 µg/L	4/14	2024
Pfpea	0.0056 µg/L	4/14	2024
Pfhxa	0.0054 µg/L	3/14	2024
PFBS	0.0048 µg/L	2/14	2024
Pfhpa	0.0030 µg/L	1/14	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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	720 µg/L 55% of the EPA limit 1300 µg/L worst single sample: 2070 µg/L	569/572	SYR4	2012–2019
Nitrate	3030 µg/L 30% of the EPA limit 10000 µg/L worst single sample: 4180 µg/L	536/536	SYR4	2012–2019
Nitrate-Nitrite	3026.5 µg/L 30% of the EPA limit 10000 µg/L worst single sample: 4180 µg/L	268/268	SYR4	2012–2019
TTHM	15.41 µg/L 19% of the EPA limit 80 µg/L worst single sample: 26.5 µg/L	134/134	SYR4	2012–2019
Lead	23.9 µg/L 159% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 200 µg/L	103/572	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	4.5 µg/L 7.5% of the EPA limit 60 µg/L worst single sample: 7 µg/L	51/134	SYR4	2012–2019
Dibromochloromethane	6.5 µg/L No EPA limit set worst single sample: 15.6 µg/L	39/106	SYR4	2012–2019
Bromodichloromethane	5.6 µg/L No EPA limit set worst single sample: 8.9 µg/L	31/106	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	25/25	LCR	2026
1,1-Dichloroethylene	3.15 µg/L 45% of the EPA limit 7 µg/L worst single sample: 4.1 µg/L	24/130	SYR4	2012–2019
Chloroform	2.585 µg/L No EPA limit set worst single sample: 3.8 µg/L	22/106	SYR4	2012–2019
Bromoform	9.9 µg/L No EPA limit set worst single sample: 11.6 µg/L	21/106	SYR4	2012–2019
Fluoride	880 µg/L 22% of the EPA limit 4000 µg/L worst single sample: 1030 µg/L	21/21	SYR4	2014–2018
Gross Beta Particle Activity	38.63 pCi/L No EPA limit set worst single sample: 39.4 pCi/L	15/18	SYR4	2012–2018
Barium	71.5 µg/L 3.6% of the EPA limit 2000 µg/L worst single sample: 88 µg/L	12/12	SYR4	2014–2018
Tetrachloroethylene	0.8000 µg/L 16% of the EPA limit 5 µg/L	12/106	SYR4	2012–2019
Nitrite	154.5 µg/L 15% of the EPA limit 1000 µg/L worst single sample: 240 µg/L	10/268	SYR4	2012–2019
Chromium	4 µg/L 4% of the EPA limit 100 µg/L	9/12	SYR4	2014–2018
Gross Alpha, Excl. Radon And U	6.702 pCi/L 45% of the EPA limit 15 pCi/L worst single sample: 7.02 pCi/L	4/30	SYR4	2012–2019
Combined Radium (-226 And -228)	1.381 pCi/L 28% of the EPA limit 5 pCi/L worst single sample: 1.4 pCi/L	2/31	SYR4	2012–2019
Heptachlor	0.0880 µg/L 22% of the EPA limit 0.4000 µg/L	1/47	SYR4	2012–2019
Heptachlor Epoxide	0.0440 µg/L 22% of the EPA limit 0.2000 µg/L	1/47	SYR4	2012–2019
Selenium	7 µg/L 14% of the EPA limit 50 µg/L	1/12	SYR4	2014–2018

77 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-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 TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: NORTH, BENJAMIN M.
Phone: 860-691-4108
Email: [email protected]

Frequently asked questions about East Lyme Water & Sewer Commission

Is East Lyme Water & Sewer Commission tap water safe to drink?

EPA monitoring detected 29 contaminants in East Lyme Water & Sewer Commission'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 East Lyme Water & Sewer Commission's water?

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

How many people does East Lyme Water & Sewer Commission serve?

East Lyme Water & Sewer Commission reports serving 15,245 people in Connecticut, per its EPA record.

Has East Lyme Water & Sewer Commission had any water quality violations?

The EPA has 528 violations on file for East Lyme Water & Sewer Commission, of which 24 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.