Washington Co Rwd #1, OK
Exceeded the action level in the past
Latest 90th-percentile lead: 3.8 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. 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 Washington Co Rwd #1
Washington Co Rwd #1 serves about 1,375 people through 551 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Washington County, Oklahoma. EPA system ID: OK3007401; phone on file: 918-535-2302. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Washington Co Rwd #1's lead record
Against the period ending 2025 (3.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Washington Co Rwd #1 is 23.4 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.8 ppb |
| 2025 | 3.3 ppb |
| 2024 | 8.7 ppb |
| 2024 | 23.4 ppb over 15 |
| 2023 | 2.6 ppb |
| 2017 | 0 (not detected) |
How Washington Co Rwd #1 compares
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. Washington Co Rwd #1's 3.8 ppb sits at the 89th percentile in Oklahoma and the 86th nationally (higher means more lead).
Other water systems in Washington County
10 other systems share Washington County; 1 of them has a higher latest lead result than Washington Co Rwd #1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bartlesville | 34,748 | 3.6 ppb |
| Dewey Public Works Authority | 3,490 | 2.6 ppb |
| Washington Co Rwd #2 | 2,250 | 1.8 ppb |
| Washington Co Rwd #5 | 900 | 3.2 ppb |
| Le Ann Water | 750 | 1.2 ppb |
| Copan Pwa | 733 | 5.6 ppb |
| Ramona Public Works Authority | 564 | 2.7 ppb |
| Ochelata Utility Authority | 494 | 0 (not detected) |
| Washington Co Rwd #7 | 258 | 1.3 ppb |
| Bar-Dew Water Assoc Inc | 130 | 0 (not detected) |
Next steps for Ochelata, OK
Test your own tap with a certified lab first-draw sample; Ochelata, 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 Washington Co Rwd #1 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. More in what a past exceedance means today.