Tap WaterIndex

← Illinois

Tap water quality report

Colfax

EPA monitoring tested this supplier for 50 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
15
detected
989
people served
9
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Local government
Counties served
McLean

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.

9
health-based violations
98
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2009-09-01
TT Health-based Resolved 2009-09-01
TT Health-based Resolved 2006-07-19
TT Health-based Resolved 2006-07-19
TT Health-based Resolved 1995-01-01
TT Health-based Resolved 1995-01-01
TT Health-based Resolved 1995-01-01
TT Health-based Resolved 1994-07-01
TT Health-based Resolved 1994-07-01
Other Monitoring Unaddressed 2025-07-01

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0107 mg/L 71%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2025
Copper
475.3 µg/L 37%
of the EPA limit 1300 µg/L
worst single sample: 483 µg/L
12/100 SYR4 2012–2019
Chloroform
14.195 µg/L
No EPA limit set
worst single sample: 17.1 µg/L
8/8 SYR4 2013–2019
Dichloroacetic Acid
14.805 µg/L
No EPA limit set
worst single sample: 16.1 µg/L
8/8 SYR4 2013–2019
TTHM
14.975 µg/L 19%
of the EPA limit 80 µg/L
worst single sample: 18.3 µg/L
8/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
18.655 µg/L 31%
of the EPA limit 60 µg/L
worst single sample: 18.9 µg/L
8/8 SYR4 2013–2019
Lead
44.81 µg/L 299%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 57.8 µg/L
7/100 SYR4 2012–2019
Trichloroacetic Acid
5.02 µg/L
No EPA limit set
worst single sample: 5.8 µg/L
7/8 SYR4 2013–2019
Barium
184 µg/L 9.2%
of the EPA limit 2000 µg/L
 4/4 SYR4 2012–2018
Monochloroacetic Acid
4.885 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
4/8 SYR4 2013–2019
Combined Radium (-226 And -228)
2.1 pCi/L 42%
of the EPA limit 5 pCi/L
 3/3 SYR4 2013–2019
Fluoride
968.9 µg/L 24%
of the EPA limit 4000 µg/L
worst single sample: 980 µg/L
3/3 SYR4 2012–2018
Xylenes, Total
1.363 µg/L 0%
of the EPA limit 10000 µg/L
worst single sample: 1.38 µg/L
2/23 SYR4 2012–2019
Bromodichloromethane
1.2 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
Carbon Tetrachloride
0.5300 µg/L 11%
of the EPA limit 5 µg/L
 1/23 SYR4 2012–2019
35 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumChromiumDichloromethaneDibromoacetic AcidDibromochloromethaneEthylbenzeneMercuryMonobromoacetic AcidNitrateNitrate-NitriteNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VANDEGRAFT, PORTIA
Phone
309-723-3261
Email
[email protected]

Frequently asked questions about Colfax

Is Colfax tap water safe to drink?

EPA monitoring detected 15 contaminants in Colfax'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 Colfax's water?

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

How many people does Colfax serve?

Colfax reports serving 989 people in Illinois, per its EPA record.

Has Colfax had any water quality violations?

The EPA has 98 violations on file for Colfax, of which 9 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.