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Tap water quality report

Oak Brook Estates

EPA monitoring tested this supplier for 72 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
11
detected
455
people served
8
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Ground water
Ownership
Private
Counties served
Howard

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.

8
health-based violations
62
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2016-09-21
TT Health-based Resolved 2016-09-21
TT Health-based Resolved 2016-09-21
TT Health-based Resolved 2016-09-21
MCL Health-based Resolved 2015-08-01 → 2015-08-31
MCL Health-based Resolved 2015-08-01 → 2015-08-31
MCL Health-based Resolved 2015-08-01 → 2015-08-31
MCL Health-based Resolved 2015-08-01 → 2015-08-31
Other Monitoring Resolved 2024-10-07
Other Monitoring Resolved 2024-10-07

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
24 µg/L 30%
of the EPA limit 80 µg/L
 11/12 SYR4 2012–2019
Copper
330 µg/L 25%
of the EPA limit 1300 µg/L
 10/10 SYR4 2016–2019
Lead
0.0012 mg/L 8%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2025
Total Haloacetic Acids (HAA5)
15 µg/L 25%
of the EPA limit 60 µg/L
 9/11 SYR4 2012–2019
Barium
3650 µg/L 183%
of the EPA limit, in the worst sample — 2000 µg/L
 7/7 SYR4 2012–2018
Lead
13 µg/L 87%
of the EPA limit 15 µg/L
 4/10 SYR4 2016–2019
Fluoride
998 µg/L 25%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Nitrate
700 µg/L 7%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Arsenic
2.7 µg/L 27%
of the EPA limit 10 µg/L
 1/3 SYR4 2012–2018
Combined Uranium
1.4 µg/L 4.7%
of the EPA limit 30 µg/L
 1/1 SYR4 2014
Gross Alpha, Excl. Radon And U
2.8 pCi/L 19%
of the EPA limit 15 pCi/L
 1/1 SYR4 2014
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, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
REYES, HEATHER
Phone
513-785-0505
Email
heather@rivervalleymhc.com

Frequently asked questions about Oak Brook Estates

Is Oak Brook Estates tap water safe to drink?

EPA monitoring detected 11 contaminants in Oak Brook Estates'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 Oak Brook Estates's water?

EPA monitoring detected TTHM, Copper, Lead, Total Haloacetic Acids (HAA5), Barium, and others. The full list with the level and data source for each is above.

How many people does Oak Brook Estates serve?

Oak Brook Estates reports serving 455 people in Ohio, per its EPA record.

Has Oak Brook Estates had any water quality violations?

The EPA has 62 violations on file for Oak Brook Estates, of which 8 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.