Walnut Park Estates, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 5 ppb (monitoring period 2017-2017). 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.
Who runs the water here
Walnut Park Estates serves about 42 people through 45 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Osage County, Oklahoma. EPA system ID: OK2005766; phone on file: 918-804-1358. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
The highest 90th-percentile result EPA holds for Walnut Park Estates is 5 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2017 | 5 ppb |
Against other Oklahoma systems
Of the 870 Oklahoma systems with a lead result, the median latest reading is 0.81 ppb; 6 are over 15 ppb right now and 66 have gone over at some point. Walnut Park Estates's 5 ppb sits at the 92nd percentile in Oklahoma and the 90th nationally (higher means more lead).
Nearby utilities
26 other systems share Osage County; 2 of them have a higher latest lead result than Walnut Park Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Skiatook Pwa | 8,110 | 0 (not detected) |
| Osage Co Rwd #15 | 6,647 | 0 (not detected) |
| Pawhuska | 3,800 | 3.6 ppb |
| Hominy | 2,584 | 0.4 ppb |
| Mccord Rwd #3 | 1,800 | 2 ppb |
| Fairfax | 1,555 | 2.3 ppb |
| Osage Co Rwd #21 | 1,500 | 0 (not detected) |
| Barnsdall | 1,243 | 0 (not detected) |
| Osage Co Rwd # 1 | 930 | 5.3 ppb |
| Osage Co Rws & Swd #3 (Braden) | 700 | 0 (not detected) |
Next steps for Prue, OK
Test your own tap with a certified lab first-draw sample; Prue, OK 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 Walnut Park 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.