Is Willoway Terrace Mhp Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Cook

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

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1992-11-01 → 1992-11-30
MCL	Health-based	Archived	1992-11-01 → 1992-11-30
MCL	Health-based	Archived	1992-11-01 → 1992-11-30
MCL	Health-based	Archived	1992-11-01 → 1992-11-30
MON	Monitoring	Resolved	2023-02-01 → 2023-02-28
MON	Monitoring	Resolved	2023-02-01 → 2023-02-28
MON	Monitoring	Resolved	2023-02-01 → 2023-02-28
MON	Monitoring	Resolved	2023-02-01 → 2023-02-28
MR	Monitoring	Resolved	2023-01-01 → 2023-03-31
MR	Monitoring	Resolved	2023-01-01 → 2023-03-31

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 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
Copper	103 µg/L 7.9% of the EPA limit 1300 µg/L worst single sample: 136 µg/L	21/40	SYR4	2012–2018
Lead	23.54 µg/L 157% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 42.5 µg/L	17/40	SYR4	2012–2018
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2024
Barium	49.625 µg/L 2.5% of the EPA limit 2000 µg/L worst single sample: 58.5 µg/L	6/6	SYR4	2012–2018
Fluoride	429 µg/L 11% of the EPA limit 4000 µg/L worst single sample: 430 µg/L	6/6	SYR4	2012–2018
Dibromoacetic Acid	1.317 µg/L No EPA limit set worst single sample: 1.33 µg/L	3/7	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	9.653 µg/L 16% of the EPA limit 60 µg/L worst single sample: 10.2 µg/L	3/7	SYR4	2014–2019
Arsenic	1.78585 µg/L 18% of the EPA limit 10 µg/L worst single sample: 1.84 µg/L	2/6	SYR4	2012–2018
Combined Radium (-226 And -228)	1.37355 pCi/L 27% of the EPA limit 5 pCi/L worst single sample: 1.4 pCi/L	2/2	SYR4	2014
Dichloroacetic Acid	1.068 µg/L No EPA limit set worst single sample: 1.07 µg/L	2/7	SYR4	2014–2019
Monochloroacetic Acid	7.5265 µg/L No EPA limit set worst single sample: 7.76 µg/L	2/7	SYR4	2014–2019
Nitrate	50 µg/L 0.5% of the EPA limit 10000 µg/L	2/36	SYR4	2012–2019
Bromodichloromethane	1.61 µg/L No EPA limit set	1/7	SYR4	2014–2019
Chloroform	1.99 µg/L No EPA limit set	1/7	SYR4	2014–2019
Dibromochloromethane	1.5 µg/L No EPA limit set	1/7	SYR4	2014–2019
Nitrate-Nitrite	50 µg/L 0.5% of the EPA limit 10000 µg/L	1/6	SYR4	2012–2019
TTHM	5.1 µg/L 6.4% of the EPA limit 80 µg/L	1/7	SYR4	2014–2019

61 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) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SMITH, JENNIFER
Phone: 773-499-7255
Email: licenses@zemanhomes.com

Frequently asked questions about Willoway Terrace Mhp

Is Willoway Terrace Mhp tap water safe to drink?

EPA monitoring detected 17 contaminants in Willoway Terrace Mhp'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 Willoway Terrace Mhp's water?

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

How many people does Willoway Terrace Mhp serve?

Willoway Terrace Mhp reports serving 900 people in Illinois, per its EPA record.

Has Willoway Terrace Mhp had any water quality violations?

The EPA has 16 violations on file for Willoway Terrace Mhp, of which 4 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.