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Tap water quality report

Sylvan Lake 1st Subdivision

EPA monitoring tested this supplier for 38 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

38
contaminants tested
6
detected
210
people served
5
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Private
Counties served
Lake

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.

5
health-based violations
140
violations on file
10
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2003-08-01 → 2003-08-31
MCL Health-based Archived 2003-08-01 → 2003-08-31
MCL Health-based Archived 2003-08-01 → 2003-08-31
MCL Health-based Archived 2000-08-01 → 2000-08-31
MCL Health-based Archived 2000-08-01 → 2000-08-31
MR Monitoring Unaddressed 2026-01-01
MR Monitoring Unaddressed 2026-01-01
MR Monitoring Unaddressed 2026-01-01
RPT Monitoring Unaddressed 2025-07-02
RPT Monitoring Unaddressed 2025-07-02

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2026
Barium
19.425 µg/L 1%
of the EPA limit 2000 µg/L
worst single sample: 19.5 µg/L
6/6 SYR4 2012–2019
Fluoride
707.75 µg/L 18%
of the EPA limit 4000 µg/L
worst single sample: 710 µg/L
6/6 SYR4 2012–2019
Chromium
6.518 µg/L 6.5%
of the EPA limit 100 µg/L
worst single sample: 6.52 µg/L
2/6 SYR4 2012–2019
Combined Radium (-226 And -228)
2.202 pCi/L 44%
of the EPA limit 5 pCi/L
worst single sample: 2.3 pCi/L
2/2 SYR4 2016
Nitrate-Nitrite
5.045 µg/L 0.1%
of the EPA limit 10000 µg/L
worst single sample: 5.1 µg/L
2/10 SYR4 2012–2016
32 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideDichloromethaneEthylbenzeneLeadMercuryNitrateNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JOHNSON, WAYNE
Phone
224-280-0188
Email
[email protected]

Frequently asked questions about Sylvan Lake 1st Subdivision

Is Sylvan Lake 1st Subdivision tap water safe to drink?

EPA monitoring detected 6 contaminants in Sylvan Lake 1st Subdivision'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 Sylvan Lake 1st Subdivision's water?

EPA monitoring detected Lead, Barium, Fluoride, Chromium, Combined Radium (-226 And -228), and others. The full list with the level and data source for each is above.

How many people does Sylvan Lake 1st Subdivision serve?

Sylvan Lake 1st Subdivision reports serving 210 people in Illinois, per its EPA record.

Has Sylvan Lake 1st Subdivision had any water quality violations?

The EPA has 140 violations on file for Sylvan Lake 1st Subdivision, of which 5 are health-based (a contaminant limit or required treatment was breached) and 10 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.