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Tap water quality report

Cedar Brook Estates Subdivision

EPA monitoring tested this supplier for 77 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
12
detected
450
people served
6
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Private
Counties served
Rock Island

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.

6
health-based violations
18
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2004-07-01 → 2004-12-31
TT Health-based Resolved 2004-07-01 → 2004-12-31
TT Health-based Resolved 2004-07-01 → 2004-12-31
TT Health-based Resolved 2004-07-01 → 2004-12-31
TT Health-based Resolved 1995-08-01
TT Health-based Resolved 1995-01-12
Other Monitoring Unaddressed 2025-07-01
MR Monitoring Unaddressed 2025-04-01
Other Monitoring Resolved 2023-01-20
Other Monitoring Resolved 2023-01-20

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
1096.5 µg/L 84%
of the EPA limit 1300 µg/L
worst single sample: 1900 µg/L
30/30 SYR4 2014–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 27/27 LCR 2025
Nitrate
70 µg/L 0.7%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Lead
12.05 µg/L 80%
of the EPA limit 15 µg/L
worst single sample: 21 µg/L
11/30 SYR4 2014–2018
Barium
523 µg/L 26%
of the EPA limit 2000 µg/L
worst single sample: 530 µg/L
3/3 SYR4 2012–2018
Chloroform
2.0764 µg/L
No EPA limit set
worst single sample: 2.096 µg/L
3/3 SYR4 2012–2017
Combined Radium (-226 And -228)
5.19 pCi/L 104%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 5.4 pCi/L
3/3 SYR4 2012–2018
Fluoride
1152.3 µg/L 29%
of the EPA limit 4000 µg/L
worst single sample: 1180 µg/L
3/3 SYR4 2012–2018
TTHM
2.0764 µg/L 2.6%
of the EPA limit 80 µg/L
worst single sample: 2.096 µg/L
3/3 SYR4 2012–2017
Arsenic
1.1 µg/L 11%
of the EPA limit 10 µg/L
 1/3 SYR4 2012–2018
Dichloroacetic Acid
1.34 µg/L
No EPA limit set
 1/3 SYR4 2012–2017
Total Haloacetic Acids (HAA5)
1.34 µg/L 2.2%
of the EPA limit 60 µg/L
 1/3 SYR4 2012–2017
65 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, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
STUBBS, GARRETT
Phone
309-714-9287

Frequently asked questions about Cedar Brook Estates Subdivision

Is Cedar Brook Estates Subdivision tap water safe to drink?

EPA monitoring detected 12 contaminants in Cedar Brook Estates 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 Cedar Brook Estates Subdivision's water?

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

How many people does Cedar Brook Estates Subdivision serve?

Cedar Brook Estates Subdivision reports serving 450 people in Illinois, per its EPA record.

Has Cedar Brook Estates Subdivision had any water quality violations?

The EPA has 18 violations on file for Cedar Brook Estates Subdivision, of which 6 are health-based (a contaminant limit or required treatment was breached) and 2 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.