Welch Pwa, OK
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Welch Pwa
Welch Pwa serves about 800 people through 406 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 groundwater, in Craig County, Oklahoma. EPA system ID: OK2001801; phone on file: 918-788-3616. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Welch Pwa's lead record
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Welch Pwa is 2 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 2 ppb |
| 2021 | 0 (not detected) |
| 2018 | 0 (not detected) |
How Welch Pwa 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. Welch Pwa's reported as 0 (not detected) sits at the 23rd percentile in Oklahoma and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Craig County
9 other systems share Craig County; 5 of them have a higher latest lead result than Welch Pwa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Vinita Utilities Authority | 6,472 | 1 ppb |
| Craig Co Rwd #2 | 4,250 | 1.4 ppb |
| Ketchum Pwa | 4,025 | 1.5 ppb |
| Craig Co Rws & Swmd #3 | 1,100 | 0 (not detected) |
| Ironside Water District Inc | 392 | 0 (not detected) |
| Craig Co Rwd #1 | 315 | 2.7 ppb |
| Big Cabin Pwa | 293 | 0 (not detected) |
| Blue Jacket Pwa | 274 | 0 (not detected) |
| North Vinita Water Coop Inc | 162 | 1 ppb |
Next steps for Welch, OK
Look up your address in Welch Pwa's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Welch Pwa 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.