Is Clay County Pwsd 4 Tap Water Safe? Quality Report

Water source: GWP
Ownership: Local government
Counties served: Clay

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
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
MCL	Health-based	Resolved	2009-08-01 → 2009-08-31
Other	Monitoring	Unaddressed	2025-07-01
MR	Monitoring	Resolved	2008-12-01 → 2008-12-31
MR	Monitoring	Resolved	2008-12-01 → 2008-12-31
MR	Monitoring	Resolved	2008-12-01 → 2008-12-31
MR	Monitoring	Resolved	2008-12-01 → 2008-12-31

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
Copper	45.615 µg/L 3.5% of the EPA limit 1300 µg/L worst single sample: 108 µg/L	30/30	SYR4	2012–2018
Lead	0.0065 mg/L 43% of the EPA limit 0.0150 mg/L	24/24	LCR	2024
Chloroform	47.83 µg/L No EPA limit set worst single sample: 63.7 µg/L	23/23	SYR4	2014–2019
Dichloroacetic Acid	16.55 µg/L No EPA limit set worst single sample: 17 µg/L	23/23	SYR4	2014–2019
TTHM	90.705 µg/L 113% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 110 µg/L	18/23	SYR4	2014–2019
Bromodichloromethane	25.445 µg/L No EPA limit set worst single sample: 28.5 µg/L	14/23	SYR4	2014–2019
Lead	19.84 µg/L 132% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 20.5 µg/L	12/30	SYR4	2012–2018
Trichloroacetic Acid	9.64 µg/L No EPA limit set worst single sample: 11.9 µg/L	11/23	SYR4	2014–2019
Dibromochloromethane	14.72 µg/L No EPA limit set worst single sample: 15.8 µg/L	10/23	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	28.3 µg/L 47% of the EPA limit 60 µg/L worst single sample: 29.3 µg/L	9/23	SYR4	2014–2019
Bromoform	2.1245 µg/L No EPA limit set worst single sample: 2.17 µg/L	8/23	SYR4	2014–2019
Dibromoacetic Acid	4.6425 µg/L No EPA limit set worst single sample: 5.15 µg/L	8/23	SYR4	2014–2019
Monobromoacetic Acid	4.5905 µg/L No EPA limit set worst single sample: 4.66 µg/L	2/23	SYR4	2014–2019

1 contaminants tested, none detected

Monochloroacetic Acid

Utility contact

Contact: KORONDI, DEANNA
Phone: 816-781-8198
Email: [email protected]

Frequently asked questions about Clay County Pwsd 4

Is Clay County Pwsd 4 tap water safe to drink?

EPA monitoring detected 13 contaminants in Clay County Pwsd 4'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 Clay County Pwsd 4's water?

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

How many people does Clay County Pwsd 4 serve?

Clay County Pwsd 4 reports serving 1,032 people in Missouri, per its EPA record.

Has Clay County Pwsd 4 had any water quality violations?

The EPA has 9 violations on file for Clay County Pwsd 4, of which 4 are health-based (a contaminant limit or required treatment was breached) and 1 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.