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Tap water quality report

Hillsboro

EPA monitoring tested this supplier for 108 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
21
detected
4,402
people served
61
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
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.

61
health-based violations
94
violations on file
4
still open
ViolationTypeStatusPeriod
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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
16.7 µg/L
No EPA limit set
 78/78 SYR4 2012–2019
Chloroform
71.3 µg/L
No EPA limit set
 78/78 SYR4 2012–2019
TTHM
82.7 µg/L 103%
of the EPA limit, in the worst sample — 80 µg/L
 78/78 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
116.6 µg/L 194%
of the EPA limit, in the worst sample — 60 µg/L
 75/80 SYR4 2012–2019
Trichloroacetic Acid
62.5 µg/L
No EPA limit set
 75/80 SYR4 2012–2019
Dichloroacetic Acid
55.6 µg/L
No EPA limit set
 65/80 SYR4 2012–2019
Dibromochloromethane
4.393 µg/L
No EPA limit set
 61/78 SYR4 2012–2019
Copper
1200 µg/L 92%
of the EPA limit 1300 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
19 µg/L 127%
of the EPA limit, in the worst sample — 15 µg/L
 22/60 SYR4 2013–2019
Atrazine
4.5 µg/L 150%
of the EPA limit, in the worst sample — 3 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
2 µg/L 50%
of the EPA limit 4 µg/L
 13/34 SYR4 2012–2019
Barium
66 µg/L 3.3%
of the EPA limit 2000 µg/L
 8/8 SYR4 2012–2019
Fluoride
952 µg/L 24%
of the EPA limit 4000 µg/L
 8/8 SYR4 2012–2019
Monochloroacetic Acid
4.51 µg/L
No EPA limit set
 5/80 SYR4 2012–2019
Monobromoacetic Acid
12.6 µg/L
No EPA limit set
 3/80 SYR4 2012–2019
Dibromoacetic Acid
1.67 µg/L
No EPA limit set
 2/80 SYR4 2012–2019
Nitrate-Nitrite
1400 µg/L 14%
of the EPA limit 10000 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
DONNIEDONS@OUTLOOK.COM

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.