Is Hebron Tap Water Safe? Quality Report

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

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	1995-08-01
TT	Health-based	Resolved	1995-01-12
MR	Monitoring	Resolved	2025-07-01
MR	Monitoring	Resolved	2025-07-01
MR	Monitoring	Resolved	2025-07-01
Other	Monitoring	Unaddressed	2025-07-01
MR	Monitoring	Resolved	1994-01-01 → 1994-06-30
MR	Monitoring	Archived	1977-06-30 → 1981-06-29

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	2250 µg/L 173% of the EPA limit, at the 95th percentile of samples — 1300 µg/L worst single sample: 3610 µg/L	176/201	SYR4	2012–2019
Lead	16.135 µg/L 108% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 195 µg/L	82/201	SYR4	2012–2019
Lead	0.0045 mg/L 30% of the EPA limit 0.0150 mg/L	28/28	LCR	2025
Nitrate	2250 µg/L 23% of the EPA limit 10000 µg/L	16/32	SYR4	2012–2019
Chloroform	3.7965 µg/L No EPA limit set worst single sample: 3.94 µg/L	8/8	SYR4	2013–2019
TTHM	14.8575 µg/L 19% of the EPA limit 80 µg/L worst single sample: 14.98 µg/L	8/8	SYR4	2013–2019
Bromodichloromethane	4.959 µg/L No EPA limit set worst single sample: 5.04 µg/L	7/8	SYR4	2013–2019
Barium	100 µg/L 5% of the EPA limit 2000 µg/L	6/6	SYR4	2012–2018
Bromoform	3.5525 µg/L No EPA limit set worst single sample: 4.07 µg/L	6/8	SYR4	2013–2019
Dibromochloromethane	5.22 µg/L No EPA limit set worst single sample: 5.45 µg/L	6/8	SYR4	2013–2019
Fluoride	1232.5 µg/L 31% of the EPA limit 4000 µg/L worst single sample: 1260 µg/L	6/6	SYR4	2012–2018
Dibromoacetic Acid	1.484 µg/L No EPA limit set worst single sample: 1.5 µg/L	5/8	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	1.484 µg/L 2.5% of the EPA limit 60 µg/L worst single sample: 1.5 µg/L	5/8	SYR4	2013–2019
Nitrate-Nitrite	2196 µg/L 22% of the EPA limit 10000 µg/L worst single sample: 2250 µg/L	3/6	SYR4	2012–2018
1,1,1-Trichloroethane	0.6275 µg/L 0.3% of the EPA limit 200 µg/L worst single sample: 0.6300 µg/L	2/9	SYR4	2012–2017
Arsenic	8.675 µg/L 87% of the EPA limit 10 µg/L worst single sample: 8.8 µg/L	2/6	SYR4	2012–2018
Chromium	8.74 µg/L 8.7% of the EPA limit 100 µg/L worst single sample: 8.8 µg/L	2/6	SYR4	2012–2018
Pentachlorophenol	0.9200 µg/L 92% of the EPA limit 1 µg/L	1/14	SYR4	2012–2019

60 contaminants tested, none detected

1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: NELSON, DAN
Phone: 815-355-2190

Frequently asked questions about Hebron

Is Hebron tap water safe to drink?

EPA monitoring detected 18 contaminants in Hebron'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 Hebron'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 Hebron serve?

Hebron reports serving 1,368 people in Illinois, per its EPA record.

Has Hebron had any water quality violations?

The EPA has 8 violations on file for Hebron, of which 2 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.