Sooner Utilities - Sleepy Hollow, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 6 ppb (monitoring period 2025-2025). 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.
Who runs the water here
Sooner Utilities - Sleepy Hollow serves about 438 people through 175 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Cleveland County, Oklahoma. EPA system ID: OK5005560; phone on file: 405-285-5687. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 6 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Sooner Utilities - Sleepy Hollow is 6 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 6 ppb |
| 2024 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 0 (not detected) |
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. Sooner Utilities - Sleepy Hollow's 6 ppb sits at the 94th percentile in Oklahoma and the 93rd nationally (higher means more lead).
Other water systems in Cleveland County
11 other systems share Cleveland County; 2 of them have a higher latest lead result than Sooner Utilities - Sleepy Hollow. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Norman Utilities Authority | 104,868 | 0 (not detected) |
| Moore Public Works Authority | 55,083 | 0 (not detected) |
| Oklahoma University | 34,000 | 1.6 ppb |
| Noble Utilities Authority | 5,750 | 1.3 ppb |
| Joseph Harp Corr Inst | 3,000 | 0 (not detected) |
| Lexington | 2,086 | 6.5 ppb |
| Wildfire Estates Homeowners | 285 | 0 (not detected) |
| Stonetown Clearview Mhc | 170 | 0 (not detected) |
| Prairie Creek Village Mhp | 145 | 0 (not detected) |
| Cleveland Co Rw,S,G&Swmd #1 | 80 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Edmond, 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 Sooner Utilities - Sleepy Hollow whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2005 ppb (copper action level 1,300 ppb).
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. Systems that went over once often dip back under; here is what that means.