Is Maysville Tap Water Safe? Quality Report

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

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.

520

health-based violations

579

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2026-01-01 → 2026-03-31
MCL	Health-based	Archived	2026-01-01 → 2026-03-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-10-01 → 2025-12-31
MCL	Health-based	Archived	2025-07-01 → 2025-09-30
MCL	Health-based	Archived	2025-07-01 → 2025-09-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Chlorite	1120 µg/L 112% of the EPA limit, in the worst sample — 1000 µg/L	223/279	SYR4	2012–2019
Bromodichloromethane	29.1 µg/L No EPA limit set	86/86	SYR4	2012–2019
Chloroform	114 µg/L No EPA limit set	86/86	SYR4	2012–2019
Dibromochloromethane	9.78 µg/L No EPA limit set	86/86	SYR4	2012–2019
Dichloroacetic Acid	49.7 µg/L No EPA limit set	78/78	SYR4	2012–2019
TTHM	148 µg/L 185% of the EPA limit, in the worst sample — 80 µg/L	78/78	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	71 µg/L 118% of the EPA limit, in the worst sample — 60 µg/L	77/78	SYR4	2012–2019
Trichloroacetic Acid	36.8 µg/L No EPA limit set	77/78	SYR4	2012–2019
Copper	1560 µg/L 120% of the EPA limit, in the worst sample — 1300 µg/L	48/48	SYR4	2012–2019
Dibromoacetic Acid	3.26 µg/L No EPA limit set	39/78	SYR4	2012–2019
Atrazine	3.66 µg/L 122% of the EPA limit, in the worst sample — 3 µg/L	27/32	SYR4	2012–2019
Bromoform	1.65 µg/L No EPA limit set	21/86	SYR4	2012–2019
Nitrate-Nitrite	830 µg/L 8.3% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Lead	0.0044 mg/L 29% of the EPA limit 0.0150 mg/L	15/15	LCR	2025
Monobromoacetic Acid	15.7 µg/L No EPA limit set	14/78	SYR4	2012–2019
Lead	5.61 µg/L 37% of the EPA limit 15 µg/L	11/48	SYR4	2012–2019
Barium	107 µg/L 5.4% of the EPA limit 2000 µg/L	8/8	SYR4	2012–2019
Fluoride	280 µg/L 7% of the EPA limit 4000 µg/L	8/8	SYR4	2012–2019
Arsenic	1.29 µg/L 13% of the EPA limit 10 µg/L	5/8	SYR4	2012–2019
Chromium	2.47 µg/L 2.5% of the EPA limit 100 µg/L	3/8	SYR4	2012–2019
Lasso	0.9400 µg/L 47% of the EPA limit 2 µg/L	2/32	SYR4	2012–2019
Carbon Tetrachloride	0.6800 µg/L 14% of the EPA limit 5 µg/L	1/8	SYR4	2012–2019

47 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranChlordaneDichloromethaneDalaponDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneMercuryMethoxychlorMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: AYRES, STEPHANIE
Phone: 816-284-0356
Email: Flinncon85@gmail.com

Frequently asked questions about Maysville

Is Maysville tap water safe to drink?

EPA monitoring detected 22 contaminants in Maysville'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 Maysville's water?

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

How many people does Maysville serve?

Maysville reports serving 1,096 people in Missouri, per its EPA record.

Has Maysville had any water quality violations?

The EPA has 579 violations on file for Maysville, of which 520 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.