Winter Creek Water Company, Llc, OK
Exceeded the action level in the past
Latest 90th-percentile lead: 6.8 ppb (monitoring period 2026-2026). 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.
Who runs the water here
Winter Creek Water Company, Llc serves about 46 people through 10 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Grady County, Oklahoma. EPA system ID: OK4002663; phone on file: 405-203-3195. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 5 ppb from 1.8 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Winter Creek Water Company, Llc is 17 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 6.8 ppb |
| 2025 | 1.8 ppb |
| 2025 | 17 ppb over 15 |
| 2022 | 5.1 ppb |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
Where this result ranks
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. Winter Creek Water Company, Llc's 6.8 ppb sits at the 96th percentile in Oklahoma and the 94th nationally (higher means more lead).
Nearby utilities
15 other systems share Grady County; 0 of them have a higher latest lead result than Winter Creek Water Company, Llc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Chickasha Municipal Authority | 16,036 | 3.75 ppb |
| Tuttle | 4,500 | 2.6 ppb |
| Grady Co Rwd #6 | 3,930 | 0 (not detected) |
| Grady Co Rwd #7 (Ninnekah) | 2,425 | 0 (not detected) |
| Minco | 1,632 | 0 (not detected) |
| Rush Springs | 1,278 | 1.26 ppb |
| Norge Water And Sewer Co., Inc | 890 | 0 (not detected) |
| Verden | 659 | 2.1 ppb |
| Alex | 635 | 0 (not detected) |
| Grady Co Rwd #2 | 455 | 1.1 ppb |
Next steps for Blanchard, OK
Test your own tap with a certified lab first-draw sample; Blanchard, 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 Winter Creek Water Company, Llc 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. Why an old exceedance still matters: over the limit before, under it now.