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Tap water quality report

Blackhawk Estates Llc

EPA monitoring tested this supplier for 77 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
13
detected
1,238
people served
89
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
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.

89
health-based violations
148
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2024-04-01 → 2024-06-30
MCL Health-based Resolved 2024-04-01 → 2024-06-30
MCL Health-based Resolved 2024-04-01 → 2024-06-30
MCL Health-based Resolved 2024-04-01 → 2024-06-30
MCL Health-based Resolved 2024-04-01 → 2024-06-30
MCL Health-based Resolved 2005-10-01 → 2005-12-31
MCL Health-based Resolved 2005-10-01 → 2005-12-31
MCL Health-based Resolved 2005-10-01 → 2005-12-31
MCL Health-based Resolved 2005-10-01 → 2005-12-31
MCL Health-based Resolved 2005-10-01 → 2005-12-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Copper
172.5 µg/L 13%
of the EPA limit 1300 µg/L
worst single sample: 258 µg/L
11/40 SYR4 2012–2018
Lead
34.778 µg/L 232%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 49.8 µg/L
8/40 SYR4 2012–2018
Nitrate
170 µg/L 1.7%
of the EPA limit 10000 µg/L
 6/16 SYR4 2012–2019
Barium
17.95 µg/L 0.9%
of the EPA limit 2000 µg/L
worst single sample: 18 µg/L
2/2 SYR4 2014–2017
Combined Radium (-226 And -228)
1.942 pCi/L 39%
of the EPA limit 5 pCi/L
worst single sample: 1.96 pCi/L
2/2 SYR4 2014–2016
Dichloroacetic Acid
0.2804 µg/L
No EPA limit set
worst single sample: 0.2840 µg/L
2/8 SYR4 2012–2019
Fluoride
860.3 µg/L 22%
of the EPA limit 4000 µg/L
worst single sample: 876 µg/L
2/2 SYR4 2014–2017
Total Haloacetic Acids (HAA5)
0.2804 µg/L 0.5%
of the EPA limit 60 µg/L
worst single sample: 0.2840 µg/L
2/8 SYR4 2012–2019
Arsenic
1.1 µg/L 11%
of the EPA limit 10 µg/L
 1/2 SYR4 2014–2017
Bromodichloromethane
0.5707 µg/L
No EPA limit set
 1/8 SYR4 2012–2019
Chloroform
0.9783 µg/L
No EPA limit set
 1/8 SYR4 2012–2019
TTHM
1.549 µg/L 1.9%
of the EPA limit 80 µg/L
 1/8 SYR4 2012–2019
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 AcidDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic 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 Blackhawk Estates Llc

Is Blackhawk Estates Llc tap water safe to drink?

EPA monitoring detected 13 contaminants in Blackhawk Estates Llc'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 Blackhawk Estates Llc's water?

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

How many people does Blackhawk Estates Llc serve?

Blackhawk Estates Llc reports serving 1,238 people in Illinois, per its EPA record.

Has Blackhawk Estates Llc had any water quality violations?

The EPA has 148 violations on file for Blackhawk Estates Llc, of which 89 are health-based (a contaminant limit or required treatment was breached) and 1 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.