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Tap water quality report

Coulterville

EPA monitoring tested this supplier for 78 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

78
contaminants tested
21
detected
1,052
people served
26
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
SWP
Ownership
Local government
Counties served
Randolph

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.

26
health-based violations
50
violations on file
6
still open
ViolationTypeStatusPeriod
TT Health-based Archived 1994-09-01 → 1994-09-30
TT Health-based Archived 1994-09-01 → 1994-09-30
TT Health-based Archived 1994-05-01 → 1994-05-31
TT Health-based Archived 1994-05-01 → 1994-05-31
TT Health-based Archived 1994-05-01 → 1994-05-31
TT Health-based Archived 1994-05-01 → 1994-05-31
TT Health-based Archived 1994-04-01 → 1994-04-30
TT Health-based Archived 1994-03-01 → 1994-03-31
TT Health-based Archived 1994-02-01 → 1994-02-28
TT Health-based Archived 1994-01-01 → 1994-01-31

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 µg/L
No EPA limit set
 35/35 SYR4 2012–2019
Chloroform
81.7 µg/L
No EPA limit set
 35/35 SYR4 2012–2019
TTHM
101 µg/L 126%
of the EPA limit, in the worst sample — 80 µg/L
 35/35 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
64 µg/L 107%
of the EPA limit, in the worst sample — 60 µg/L
 34/35 SYR4 2012–2019
Trichloroacetic Acid
25 µg/L
No EPA limit set
 34/35 SYR4 2012–2019
Dichloroacetic Acid
34.1 µg/L
No EPA limit set
 32/35 SYR4 2012–2019
Copper
700 µg/L 54%
of the EPA limit 1300 µg/L
 30/30 SYR4 2013–2019
Dibromochloromethane
4.516 µg/L
No EPA limit set
 22/35 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2025
Nitrate
510 µg/L 5.1%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
4.1 µg/L 27%
of the EPA limit 15 µg/L
 10/30 SYR4 2013–2019
Monochloroacetic Acid
4.93 µg/L
No EPA limit set
 10/35 SYR4 2012–2019
Barium
23 µg/L 1.2%
of the EPA limit 2000 µg/L
 8/8 SYR4 2012–2019
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 8/8 SYR4 2012–2019
Monobromoacetic Acid
8.6 µg/L
No EPA limit set
 4/35 SYR4 2012–2019
Nitrate-Nitrite
320 µg/L 3.2%
of the EPA limit 10000 µg/L
 3/3 SYR4 2012–2018
2,4-D
3.8 µg/L 5.4%
of the EPA limit 70 µg/L
 2/13 SYR4 2012–2019
Simazine
3 µg/L 75%
of the EPA limit 4 µg/L
 2/16 SYR4 2012–2019
Arsenic
0.6200 µg/L 6.2%
of the EPA limit 10 µg/L
 1/8 SYR4 2012–2019
Combined Radium (-226 And -228)
0.7140 pCi/L 14%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Di(2-ethylhexyl) Phthalate
2.4 µg/L 40%
of the EPA limit 6 µg/L
 1/12 SYR4 2012–2019
57 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TPAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MARLOW, STEVE
Phone
618-758-2813
Email
WaterPlantSuper@Coulterville.org

Frequently asked questions about Coulterville

Is Coulterville tap water safe to drink?

EPA monitoring detected 21 contaminants in Coulterville'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 Coulterville'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 Coulterville serve?

Coulterville reports serving 1,052 people in Illinois, per its EPA record.

Has Coulterville had any water quality violations?

The EPA has 50 violations on file for Coulterville, of which 26 are health-based (a contaminant limit or required treatment was breached) and 6 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.