Oak Brook Estates, OH

Lead detected, under the action levels

Latest 90th-percentile lead: 1.2 ppb (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.

About Oak Brook Estates

Oak Brook Estates serves about 455 people through 182 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Howard County, Ohio. EPA system ID: IN5234003; phone on file: 513-785-0505. They can tell you what your service line is made of and whether they pay to replace it.

Oak Brook Estates's lead record

That is down 4.5 ppb from 5.7 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Oak Brook Estates is 5.7 ppb across 2 monitoring periods, none of them over 15 ppb.

Against other Ohio systems

Of the 1,079 Ohio systems with a lead result, the median latest reading is 0.7 ppb; 1 are over 15 ppb right now and 27 have gone over at some point. Oak Brook Estates's 1.2 ppb sits at the 62nd percentile in Ohio and the 59th nationally (higher means more lead).

Next steps for Cincinnati, OH

Test your own tap with a certified lab first-draw sample; Cincinnati, OH may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Oak Brook Estates whether it covers that cost before hiring anyone - many utilities now do.

These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.