Tap WaterIndex

← Illinois

Tap water quality report

Olney

EPA monitoring tested this supplier for 108 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
19
detected
8,877
people served
8
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Surface water
Ownership
Local government
Counties served
Richland

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.

8
health-based violations
17
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2007-10-01 → 2007-12-31
TT Health-based Resolved 2007-10-01 → 2007-12-31
TT Health-based Resolved 2007-10-01 → 2007-12-31
TT Health-based Resolved 2007-10-01 → 2007-12-31
TT Health-based Resolved 2007-10-01 → 2007-12-31
TT Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Archived 1999-07-01 → 1999-07-31
MCL Health-based Archived 1999-07-01 → 1999-07-31
MR Monitoring Resolved 2024-04-01 → 2024-06-30
MR Monitoring Resolved 2024-04-01 → 2024-06-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chloroform
53.16 µg/L
No EPA limit set
worst single sample: 69.5 µg/L
57/57 SYR4 2012–2019
TTHM
58.656 µg/L 73%
of the EPA limit 80 µg/L
worst single sample: 74.8 µg/L
57/57 SYR4 2012–2019
Bromodichloromethane
6.055 µg/L
No EPA limit set
worst single sample: 6.7 µg/L
55/57 SYR4 2012–2019
Dichloroacetic Acid
15.4 µg/L
No EPA limit set
worst single sample: 16.1 µg/L
53/57 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
32.8 µg/L 55%
of the EPA limit 60 µg/L
worst single sample: 37.1 µg/L
53/57 SYR4 2012–2019
Copper
110 µg/L 8.5%
of the EPA limit 1300 µg/L
worst single sample: 130 µg/L
40/40 SYR4 2014–2017
Trichloroacetic Acid
19.16 µg/L
No EPA limit set
worst single sample: 19.6 µg/L
33/57 SYR4 2012–2019
Lead
12 µg/L 80%
of the EPA limit 15 µg/L
worst single sample: 210 µg/L
21/40 SYR4 2014–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Nitrate
360 µg/L 3.6%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Fluoride
1160 µg/L 29%
of the EPA limit 4000 µg/L
worst single sample: 1200 µg/L
9/9 SYR4 2012–2019
Barium
28.95 µg/L 1.4%
of the EPA limit 2000 µg/L
worst single sample: 30 µg/L
8/8 SYR4 2012–2019
Dibromochloromethane
4.223 µg/L
No EPA limit set
worst single sample: 4.229 µg/L
7/57 SYR4 2012–2019
Monobromoacetic Acid
8.187 µg/L
No EPA limit set
worst single sample: 8.49 µg/L
4/57 SYR4 2012–2019
Nitrate-Nitrite
208 µg/L 2.1%
of the EPA limit 10000 µg/L
worst single sample: 220 µg/L
3/3 SYR4 2012–2018
Arsenic
1.2 µg/L 12%
of the EPA limit 10 µg/L
 1/8 SYR4 2012–2019
Chromium
7.5 µg/L 7.5%
of the EPA limit 100 µg/L
 1/8 SYR4 2012–2019
Combined Radium (-226 And -228)
1.609 pCi/L 32%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Monochloroacetic Acid
2 µg/L
No EPA limit set
 1/57 SYR4 2012–2019
89 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BRADLEY, FRANK
Phone
618-395-7302
Email
[email protected]

Frequently asked questions about Olney

Is Olney tap water safe to drink?

EPA monitoring detected 19 contaminants in Olney'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 Olney's water?

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

How many people does Olney serve?

Olney reports serving 8,877 people in Illinois, per its EPA record.

Has Olney had any water quality violations?

The EPA has 17 violations on file for Olney, of which 8 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.