Is Jefferson County Pwsd 3 Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Jefferson

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
Other	Monitoring	Resolved	2006-07-01
MR	Monitoring	Archived	1994-09-01 → 1994-09-30

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	9.6075 µg/L No EPA limit set worst single sample: 12.7 µg/L	86/86	SYR4	2012–2019
Chloroform	89.525 µg/L No EPA limit set worst single sample: 111 µg/L	86/86	SYR4	2012–2019
TTHM	93.875 µg/L 117% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 114 µg/L	86/86	SYR4	2012–2019
Dichloroacetic Acid	41.8 µg/L No EPA limit set worst single sample: 56.7 µg/L	85/86	SYR4	2012–2019
Copper	8.7305 µg/L 0.7% of the EPA limit 1300 µg/L worst single sample: 36.8 µg/L	84/90	SYR4	2013–2019
Trichloroacetic Acid	5.04 µg/L No EPA limit set worst single sample: 8.66 µg/L	81/86	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	47.68 µg/L 79% of the EPA limit 60 µg/L worst single sample: 68.6 µg/L	79/86	SYR4	2012–2019
Dibromochloromethane	2.815 µg/L No EPA limit set worst single sample: 4.2 µg/L	66/86	SYR4	2012–2019
Lead	11.5195 µg/L 77% of the EPA limit 15 µg/L worst single sample: 27.2 µg/L	22/90	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	21/21	LCR	2025
Dibromoacetic Acid	2.648 µg/L No EPA limit set worst single sample: 3.24 µg/L	9/86	SYR4	2012–2019
Monochloroacetic Acid	11.3 µg/L No EPA limit set worst single sample: 11.6 µg/L	3/86	SYR4	2012–2019

32 contaminants tested, none detected

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Utility contact

Contact: WELDELE, KENNETH
Phone: 636-296-7053
Email: [email protected]

Frequently asked questions about Jefferson County Pwsd 3

Is Jefferson County Pwsd 3 tap water safe to drink?

EPA monitoring detected 12 contaminants in Jefferson County Pwsd 3'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 Jefferson County Pwsd 3's water?

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

How many people does Jefferson County Pwsd 3 serve?

Jefferson County Pwsd 3 reports serving 17,000 people in Missouri, per its EPA record.

Has Jefferson County Pwsd 3 had any water quality violations?

The EPA has 2 violations on file for Jefferson County Pwsd 3, 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.