Is Washington County Water Company Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
Counties served: Washington

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

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2018-01-01 → 2018-01-31
TT	Health-based	Resolved	2018-01-01 → 2018-01-31
TT	Health-based	Resolved	2018-01-01 → 2018-01-31
TT	Health-based	Resolved	2018-01-01 → 2018-01-31
TT	Health-based	Resolved	2018-01-01 → 2018-01-31
MCL	Health-based	Archived	2002-02-01 → 2002-02-28
MCL	Health-based	Archived	2002-02-01 → 2002-02-28
MCL	Health-based	Archived	2000-06-01 → 2000-06-30
MCL	Health-based	Archived	2000-06-01 → 2000-06-30
MCL	Health-based	Archived	2000-06-01 → 2000-06-30

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfba	0.0082 µg/L	13/16	2025

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
Chloroform	58.035 µg/L No EPA limit set worst single sample: 108.7 µg/L	128/128	SYR4	2012–2019
TTHM	80.825 µg/L 101% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 138.6 µg/L	128/128	SYR4	2012–2019
Bromodichloromethane	16.67 µg/L No EPA limit set worst single sample: 23.9 µg/L	127/128	SYR4	2012–2019
Dibromochloromethane	6.1 µg/L No EPA limit set worst single sample: 10.5 µg/L	124/128	SYR4	2012–2019
Dichloroacetic Acid	29.15 µg/L No EPA limit set worst single sample: 54.6 µg/L	123/124	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	39.35 µg/L 66% of the EPA limit 60 µg/L worst single sample: 89 µg/L	123/124	SYR4	2012–2019
Trichloroacetic Acid	16.87 µg/L No EPA limit set worst single sample: 33.6 µg/L	120/124	SYR4	2012–2019
Copper	1189 µg/L 91% of the EPA limit 1300 µg/L worst single sample: 1404 µg/L	47/60	SYR4	2014–2017
Dibromoacetic Acid	2.1 µg/L No EPA limit set worst single sample: 2.8 µg/L	44/124	SYR4	2012–2019
Monobromoacetic Acid	4.73 µg/L No EPA limit set worst single sample: 11 µg/L	35/124	SYR4	2012–2019
Lead	4 µg/L 27% of the EPA limit 15 µg/L worst single sample: 5 µg/L	26/60	SYR4	2014–2017
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	18/18	LCR	2023
Bromoform	1.6 µg/L No EPA limit set	17/128	SYR4	2012–2019
Monochloroacetic Acid	4.96 µg/L No EPA limit set worst single sample: 6.7 µg/L	13/124	SYR4	2012–2019

29 contaminants tested, none detected

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Utility contact

Contact: ENGELE, MATT
Phone: 618-327-4454
Email: [email protected]

Frequently asked questions about Washington County Water Company

Is Washington County Water Company tap water safe to drink?

EPA monitoring detected 15 contaminants in Washington County Water Company'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 Washington County Water Company's water?

EPA monitoring detected Chloroform, TTHM, Bromodichloromethane, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Washington County Water Company serve?

Washington County Water Company reports serving 11,374 people in Illinois, per its EPA record.

Has Washington County Water Company had any water quality violations?

The EPA has 27 violations on file for Washington County Water Company, of which 11 are health-based (a contaminant limit or required treatment was breached) and 2 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.