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Tap water quality report

Chillicothe

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
6,660
people served
21
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Local government
Counties served
Peoria

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.

21
health-based violations
130
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-10-01 → 2005-10-31
MCL Health-based Resolved 2005-10-01 → 2005-10-31
MCL Health-based Resolved 2005-10-01 → 2005-10-31
MCL Health-based Resolved 2005-10-01 → 2005-10-31
MCL Health-based Archived 1993-07-01 → 1993-07-31
MCL Health-based Archived 1993-07-01 → 1993-07-31
MCL Health-based Archived 1993-07-01 → 1993-07-31
MCL Health-based Archived 1993-03-01 → 1993-03-31
MCL Health-based Archived 1993-03-01 → 1993-03-31
MCL Health-based Archived 1993-03-01 → 1993-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0044 µg/L 2/14 2024
6:2 Fts 0.0050 µg/L 1/14 2024
Pfhxa 0.0034 µg/L 1/14 2024

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
Nitrate
4765 µg/L 48%
of the EPA limit 10000 µg/L
worst single sample: 5100 µg/L
108/108 SYR4 2012–2019
Copper
143.5 µg/L 11%
of the EPA limit 1300 µg/L
worst single sample: 350 µg/L
40/40 SYR4 2014–2017
Lead
7.79 µg/L 52%
of the EPA limit 15 µg/L
worst single sample: 10 µg/L
22/40 SYR4 2014–2017
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2025
Nitrate-Nitrite
5030 µg/L 50%
of the EPA limit 10000 µg/L
worst single sample: 5100 µg/L
15/15 SYR4 2012–2019
Barium
68.6 µg/L 3.4%
of the EPA limit 2000 µg/L
worst single sample: 71 µg/L
13/13 SYR4 2013–2019
Fluoride
1059 µg/L 26%
of the EPA limit 4000 µg/L
worst single sample: 1200 µg/L
13/18 SYR4 2013–2019
Combined Radium (-226 And -228)
1.2559 pCi/L 25%
of the EPA limit 5 pCi/L
worst single sample: 1.286 pCi/L
8/8 SYR4 2013–2019
TTHM
3.4588 µg/L 4.3%
of the EPA limit 80 µg/L
worst single sample: 3.722 µg/L
8/8 SYR4 2013–2019
Dibromochloromethane
2.5005 µg/L
No EPA limit set
worst single sample: 2.97 µg/L
7/8 SYR4 2013–2019
Bromodichloromethane
0.9291 µg/L
No EPA limit set
worst single sample: 0.9653 µg/L
4/8 SYR4 2013–2019
Bromoform
0.9441 µg/L
No EPA limit set
worst single sample: 0.9750 µg/L
4/8 SYR4 2013–2019
Chloroform
0.5803 µg/L
No EPA limit set
worst single sample: 0.5829 µg/L
3/8 SYR4 2013–2019
Selenium
2.9 µg/L 5.8%
of the EPA limit 50 µg/L
 1/13 SYR4 2013–2019
92 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 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PASSAGE, DENISE
Phone
309-274-5056
Email
[email protected]

Frequently asked questions about Chillicothe

Is Chillicothe tap water safe to drink?

EPA monitoring detected 17 contaminants in Chillicothe'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 Chillicothe's water?

EPA monitoring detected Nitrate, Copper, Lead, Lead, Nitrate-Nitrite, and others. The full list with the level and data source for each is above.

How many people does Chillicothe serve?

Chillicothe reports serving 6,660 people in Illinois, per its EPA record.

Has Chillicothe had any water quality violations?

The EPA has 130 violations on file for Chillicothe, of which 21 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.