Oak Brook Estates, MO
Exceeded the action level in the past
Latest 90th-percentile lead: 0.68 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Oak Brook Estates
Oak Brook Estates serves about 40 people through 16 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Taney County, Missouri. EPA system ID: MO5031481; phone on file: 720-429-7398. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 4.7 ppb from 5.38 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Oak Brook Estates is 16.4 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.68 ppb |
| 2022 | 5.38 ppb |
| 2020 | 0.99 ppb |
| 2019 | 2.42 ppb |
| 2019 | 16.4 ppb over 15 |
Where this result ranks
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Oak Brook Estates's 0.68 ppb sits at the 44th percentile in Missouri and the 46th nationally (higher means more lead).
Other water systems in Taney County
51 other systems share Taney County; 28 of them have a higher latest lead result than Oak Brook Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Branson Pws | 12,640 | 2.92 ppb |
| Mo American Tri State | 8,680 | 2 ppb |
| Taney County Pwsd 3 | 6,000 | 3.87 ppb |
| Taney County Pwsd 2 | 5,500 | 1.92 ppb |
| Hollister Pws | 4,426 | 0 (not detected) |
| Forsyth Pws | 2,730 | 2.75 ppb |
| Holiday Hills Resort | 2,065 | 3.83 ppb |
| Taney County Pwsd 1 | 2,000 | 1.17 ppb |
| Merriam Woods Pws | 1,839 | 5 ppb |
| College Of The Ozarks | 1,700 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Walnut Shade, MO 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. The lead result guide covers how utilities pick the homes they sample. More in what a past exceedance means today.