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Lake Iroquois Association

EPA monitoring tested this supplier for 79 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
15
detected
800
people served
0
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Private
Counties served
Iroquois

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.

0
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2008-09-03
Other Monitoring Resolved 2008-09-03
Other Monitoring Resolved 2008-07-01
Other Monitoring Resolved 2008-07-01
MR Monitoring Resolved 2000-10-01 → 2000-12-31
MR Monitoring Archived 1977-06-30 → 1981-06-29

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
Copper
1955 µg/L 150%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 2400 µg/L
50/50 SYR4 2013–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 26/26 LCR 2025
Lead
7.18 µg/L 48%
of the EPA limit 15 µg/L
worst single sample: 8.3 µg/L
15/50 SYR4 2013–2019
Nitrate
1500 µg/L 15%
of the EPA limit 10000 µg/L
 14/20 SYR4 2012–2019
Chloroform
27.825 µg/L
No EPA limit set
worst single sample: 29 µg/L
6/8 SYR4 2012–2019
TTHM
37.975 µg/L 47%
of the EPA limit 80 µg/L
worst single sample: 40 µg/L
6/8 SYR4 2012–2019
Barium
64.67 µg/L 3.2%
of the EPA limit 2000 µg/L
worst single sample: 71 µg/L
3/3 SYR4 2012–2018
Fluoride
1097.2 µg/L 27%
of the EPA limit 4000 µg/L
worst single sample: 1110 µg/L
3/3 SYR4 2012–2018
Bromodichloromethane
8.577 µg/L
No EPA limit set
worst single sample: 8.7 µg/L
2/8 SYR4 2012–2019
Dibromochloromethane
1.7955 µg/L
No EPA limit set
worst single sample: 1.82 µg/L
2/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
9.151 µg/L 15%
of the EPA limit 60 µg/L
worst single sample: 9.19 µg/L
2/8 SYR4 2012–2019
Trichloroacetic Acid
9.151 µg/L
No EPA limit set
worst single sample: 9.19 µg/L
2/8 SYR4 2012–2019
Arsenic
1.4 µg/L 14%
of the EPA limit 10 µg/L
 1/3 SYR4 2012–2018
Combined Radium (-226 And -228)
0.4060 pCi/L 8.1%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Nitrate-Nitrite
370 µg/L 3.7%
of the EPA limit 10000 µg/L
 1/1 SYR4 2012
64 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-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GARBACIAK, SR., STEVE

Frequently asked questions about Lake Iroquois Association

Is Lake Iroquois Association tap water safe to drink?

EPA monitoring detected 15 contaminants in Lake Iroquois Association'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 Lake Iroquois Association's water?

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

How many people does Lake Iroquois Association serve?

Lake Iroquois Association reports serving 800 people in Illinois, per its EPA record.

Has Lake Iroquois Association had any water quality violations?

The EPA has 6 violations on file for Lake Iroquois Association, of which 0 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.