Is Gillespie Tap Water Safe? Quality Report

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

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

251

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Archived	2026-01-01 → 2026-01-31
TT	Health-based	Archived	2026-01-01 → 2026-01-31
TT	Health-based	Archived	2026-01-01 → 2026-01-31
TT	Health-based	Unaddressed	2024-10-17
TT	Health-based	Unaddressed	2024-10-17
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-07-01 → 1997-09-30
MCL	Health-based	Resolved	1997-04-01 → 1997-06-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	6.902 µg/L No EPA limit set worst single sample: 9.51 µg/L	57/57	SYR4	2012–2019
Chloroform	30.236 µg/L No EPA limit set worst single sample: 32.29 µg/L	57/57	SYR4	2012–2019
TTHM	37.648 µg/L 47% of the EPA limit 80 µg/L worst single sample: 40.32 µg/L	57/57	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	47.65 µg/L 79% of the EPA limit 60 µg/L worst single sample: 65.3 µg/L	56/57	SYR4	2012–2019
Trichloroacetic Acid	26.575 µg/L No EPA limit set worst single sample: 52.2 µg/L	56/57	SYR4	2012–2019
Dichloroacetic Acid	19.445 µg/L No EPA limit set worst single sample: 28.1 µg/L	52/57	SYR4	2012–2019
Dibromochloromethane	2.6553 µg/L No EPA limit set worst single sample: 4.308 µg/L	43/57	SYR4	2012–2019
Copper	574.5 µg/L 44% of the EPA limit 1300 µg/L worst single sample: 690 µg/L	40/40	SYR4	2014–2017
Atrazine	1.38 µg/L 46% of the EPA limit 3 µg/L worst single sample: 1.7 µg/L	23/33	SYR4	2012–2019
Nitrate	1400 µg/L 14% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2023
Barium	44 µg/L 2.2% of the EPA limit 2000 µg/L	8/8	SYR4	2012–2019
Fluoride	895.65 µg/L 22% of the EPA limit 4000 µg/L worst single sample: 896 µg/L	8/8	SYR4	2012–2019
Monobromoacetic Acid	13.787 µg/L No EPA limit set worst single sample: 16.7 µg/L	7/57	SYR4	2012–2019
Lead	344.36 µg/L 2296% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 430 µg/L	5/40	SYR4	2014–2017
Dibromoacetic Acid	1.621 µg/L No EPA limit set worst single sample: 1.64 µg/L	3/57	SYR4	2012–2019
Nitrate-Nitrite	943 µg/L 9.4% of the EPA limit 10000 µg/L worst single sample: 1000 µg/L	3/3	SYR4	2012–2018
Arsenic	1.075 µg/L 11% of the EPA limit 10 µg/L worst single sample: 1.1 µg/L	2/8	SYR4	2012–2019
Monochloroacetic Acid	3.4285 µg/L No EPA limit set worst single sample: 3.5 µg/L	2/57	SYR4	2012–2019
Simazine	1.2555 µg/L 31% of the EPA limit 4 µg/L worst single sample: 1.3 µg/L	2/27	SYR4	2012–2019
Cyanide	58 µg/L 29% of the EPA limit 200 µg/L	1/8	SYR4	2012–2019
Combined Radium (-226 And -228)	1.23 pCi/L 25% of the EPA limit 5 pCi/L	1/2	SYR4	2014–2017

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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: HICKS, JOHN
Phone: 217-839-2919
Email: [email protected]

Frequently asked questions about Gillespie

Is Gillespie tap water safe to drink?

EPA monitoring detected 22 contaminants in Gillespie'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 Gillespie'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 Gillespie serve?

Gillespie reports serving 3,737 people in Illinois, per its EPA record.

Has Gillespie had any water quality violations?

The EPA has 251 violations on file for Gillespie, of which 44 are health-based (a contaminant limit or required treatment was breached) and 11 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.