Is Watertown Water & Sewer Authority Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
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.

health-based violations

136

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2006-10-01 → 2006-12-31
MCL	Health-based	Resolved	2006-10-01 → 2006-12-31
MCL	Health-based	Resolved	2006-10-01 → 2006-12-31
MCL	Health-based	Resolved	2006-10-01 → 2006-12-31
MCL	Health-based	Resolved	2006-07-01 → 2006-09-30
MCL	Health-based	Resolved	2006-07-01 → 2006-09-30
MCL	Health-based	Resolved	2006-07-01 → 2006-09-30
MCL	Health-based	Resolved	2006-07-01 → 2006-09-30
MCL	Health-based	Resolved	2006-01-01 → 2006-03-31
MCL	Health-based	Resolved	2006-01-01 → 2006-03-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	10.6 µg/L No EPA limit set worst single sample: 11.5 µg/L	131/131	SYR4	2012–2019
Chloroform	79.55 µg/L No EPA limit set worst single sample: 87.6 µg/L	131/131	SYR4	2012–2019
Dichloroacetic Acid	26.75 µg/L No EPA limit set worst single sample: 28.4 µg/L	131/131	SYR4	2012–2019
TTHM	90.7 µg/L 113% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 99.8 µg/L	131/131	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	60.3 µg/L 100% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 67.1 µg/L	131/131	SYR4	2012–2019
Trichloroacetic Acid	33.95 µg/L No EPA limit set worst single sample: 39.7 µg/L	131/131	SYR4	2012–2019
Dibromochloromethane	1.1 µg/L No EPA limit set worst single sample: 1.3 µg/L	118/131	SYR4	2012–2019
Monochloroacetic Acid	2.115 µg/L No EPA limit set worst single sample: 2.5 µg/L	118/131	SYR4	2012–2019
Copper	218.5 µg/L 17% of the EPA limit 1300 µg/L worst single sample: 840 µg/L	42/42	SYR4	2015–2018
Lead	11.8 µg/L 79% of the EPA limit 15 µg/L worst single sample: 16 µg/L	15/42	SYR4	2015–2018
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	10/10	LCR	2024
Dibromoacetic Acid	0.8700 µg/L No EPA limit set worst single sample: 0.9000 µg/L	4/131	SYR4	2012–2019

32 contaminants tested, none detected

11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact: LUKOWSKI, GERALD
Phone: 860-945-5299
Email: [email protected]

Frequently asked questions about Watertown Water & Sewer Authority

Is Watertown Water & Sewer Authority tap water safe to drink?

EPA monitoring detected 12 contaminants in Watertown Water & Sewer Authority'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 Watertown Water & Sewer Authority's water?

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

How many people does Watertown Water & Sewer Authority serve?

Watertown Water & Sewer Authority reports serving 9,972 people in Connecticut, per its EPA record.

Has Watertown Water & Sewer Authority had any water quality violations?

The EPA has 136 violations on file for Watertown Water & Sewer Authority, of which 40 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.