Is Hillsboro Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Montgomery

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	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2020-01-01 → 2020-03-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31

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
Bromodichloromethane	10.075 µg/L No EPA limit set worst single sample: 16.7 µg/L	78/78	SYR4	2012–2019
Chloroform	50.95 µg/L No EPA limit set worst single sample: 71.3 µg/L	78/78	SYR4	2012–2019
TTHM	65.7 µg/L 82% of the EPA limit 80 µg/L worst single sample: 82.7 µg/L	78/78	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	80.41 µg/L 134% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 116.6 µg/L	75/80	SYR4	2012–2019
Trichloroacetic Acid	35.84 µg/L No EPA limit set worst single sample: 62.5 µg/L	75/80	SYR4	2012–2019
Dichloroacetic Acid	39.38 µg/L No EPA limit set worst single sample: 55.6 µg/L	65/80	SYR4	2012–2019
Dibromochloromethane	2.84 µg/L No EPA limit set worst single sample: 4.393 µg/L	61/78	SYR4	2012–2019
Copper	247 µg/L 19% of the EPA limit 1300 µg/L worst single sample: 1200 µg/L	60/60	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	22/22	LCR	2025
Lead	8.44 µg/L 56% of the EPA limit 15 µg/L worst single sample: 19 µg/L	22/60	SYR4	2013–2019
Atrazine	2.02 µg/L 67% of the EPA limit 3 µg/L worst single sample: 4.5 µg/L	17/34	SYR4	2012–2019
Nitrate	2600 µg/L 26% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Simazine	1.82 µg/L 46% of the EPA limit 4 µg/L worst single sample: 2 µg/L	13/34	SYR4	2012–2019
Barium	62.5 µg/L 3.1% of the EPA limit 2000 µg/L worst single sample: 66 µg/L	8/8	SYR4	2012–2019
Fluoride	936.95 µg/L 23% of the EPA limit 4000 µg/L worst single sample: 952 µg/L	8/8	SYR4	2012–2019
Monochloroacetic Acid	4.334 µg/L No EPA limit set worst single sample: 4.51 µg/L	5/80	SYR4	2012–2019
Monobromoacetic Acid	11.542 µg/L No EPA limit set worst single sample: 12.6 µg/L	3/80	SYR4	2012–2019
Dibromoacetic Acid	1.6515 µg/L No EPA limit set worst single sample: 1.67 µg/L	2/80	SYR4	2012–2019
Nitrate-Nitrite	1352.5 µg/L 14% of the EPA limit 10000 µg/L worst single sample: 1400 µg/L	2/2	SYR4	2012–2015
Arsenic	1.4 µg/L 14% of the EPA limit 10 µg/L	1/8	SYR4	2012–2019
Selenium	2.3 µg/L 4.6% of the EPA limit 50 µg/L	1/8	SYR4	2012–2019

87 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: DOWNS, DON
Phone: 217-532-5566
Email: [email protected]

Frequently asked questions about Hillsboro

Is Hillsboro tap water safe to drink?

EPA monitoring detected 21 contaminants in Hillsboro'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 Hillsboro's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Hillsboro serve?

Hillsboro reports serving 4,402 people in Illinois, per its EPA record.

Has Hillsboro had any water quality violations?

The EPA has 94 violations on file for Hillsboro, of which 61 are health-based (a contaminant limit or required treatment was breached) and 4 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.