Is Eureka Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Woodford

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

116

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Archived	1995-02-01 → 1995-02-28
TT	Health-based	Archived	1995-02-01 → 1995-02-28
TT	Health-based	Archived	1995-02-01 → 1995-02-28
TT	Health-based	Archived	1995-01-01 → 1995-01-31
TT	Health-based	Archived	1995-01-01 → 1995-01-31
TT	Health-based	Archived	1995-01-01 → 1995-01-31
TT	Health-based	Archived	1994-12-01 → 1994-12-31
TT	Health-based	Archived	1994-12-01 → 1994-12-31
TT	Health-based	Archived	1994-12-01 → 1994-12-31
TT	Health-based	Archived	1994-11-01 → 1994-11-30

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
Copper	750.5 µg/L 58% of the EPA limit 1300 µg/L worst single sample: 1200 µg/L	40/40	SYR4	2014–2017
Lead	182.855 µg/L 1219% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 520 µg/L	34/40	SYR4	2014–2017
Lead	0.0039 mg/L 26% of the EPA limit 0.0150 mg/L	17/17	LCR	2025
Nitrate	660 µg/L 6.6% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Chloroform	10.473 µg/L No EPA limit set worst single sample: 11.6 µg/L	8/8	SYR4	2013–2019
TTHM	12.5625 µg/L 16% of the EPA limit 80 µg/L worst single sample: 13.7 µg/L	8/8	SYR4	2013–2019
Bromodichloromethane	2.085 µg/L No EPA limit set worst single sample: 2.09 µg/L	6/8	SYR4	2013–2019
Nitrate-Nitrite	515 µg/L 5.1% of the EPA limit 10000 µg/L worst single sample: 530 µg/L	3/3	SYR4	2012–2018
Total Haloacetic Acids (HAA5)	14.576 µg/L 24% of the EPA limit 60 µg/L worst single sample: 15.38 µg/L	3/8	SYR4	2013–2019
Trichloroacetic Acid	3.008 µg/L No EPA limit set worst single sample: 3.12 µg/L	3/8	SYR4	2013–2019
Arsenic	2.36 µg/L 24% of the EPA limit 10 µg/L worst single sample: 2.4 µg/L	2/2	SYR4	2014–2017
Barium	9.71 µg/L 0.5% of the EPA limit 2000 µg/L worst single sample: 10 µg/L	2/2	SYR4	2014–2017
Dichloroacetic Acid	5.341 µg/L No EPA limit set worst single sample: 5.45 µg/L	2/8	SYR4	2013–2019
Fluoride	1050.1 µg/L 26% of the EPA limit 4000 µg/L worst single sample: 1070 µg/L	2/2	SYR4	2014–2017
Combined Radium (-226 And -228)	1.015 pCi/L 20% of the EPA limit 5 pCi/L	1/1	SYR4	2015
Dibromoacetic Acid	6.81 µg/L No EPA limit set	1/8	SYR4	2013–2019
Monochloroacetic Acid	2.26 µg/L No EPA limit set	1/8	SYR4	2013–2019
Nitrite	180 µg/L 18% of the EPA limit 1000 µg/L	1/3	SYR4	2012–2018

63 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromochloromethaneEthylbenzeneHfpo-DaMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BROWN, MELISSA
Phone: 309-467-2113
Email: [email protected]

Frequently asked questions about Eureka

Is Eureka tap water safe to drink?

EPA monitoring detected 18 contaminants in Eureka'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 Eureka's water?

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

How many people does Eureka serve?

Eureka reports serving 5,216 people in Illinois, per its EPA record.

Has Eureka had any water quality violations?

The EPA has 116 violations on file for Eureka, of which 54 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.