Westville Utility Authority, OK
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 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 Westville Utility Authority
Westville Utility Authority serves about 1,596 people through 771 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 Adair County, Oklahoma. EPA system ID: OK3000109; phone on file: 918-723-5512. They can tell you what your service line is made of and whether they pay to replace it.
Westville Utility Authority's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Westville Utility Authority is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 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. Westville Utility Authority's reported as 0 (not detected) sits at the 30th percentile in Oklahoma and the 29th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
8 other systems share Adair County; 3 of them have a higher latest lead result than Westville Utility Authority. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Stilwell | 3,276 | 0.88 ppb |
| Adair Co Rwd #3 | 2,598 | 0 (not detected) |
| Adair Co Rwd #1 (Cherry Tree) | 2,000 | 4.1 ppb |
| Adair Co Rwd #2 | 1,675 | 0 (not detected) |
| Adair Co Rwd #4 | 1,025 | 0 (not detected) |
| Adair Co Rwd #5 | 675 | 1.6 ppb |
| Watts | 316 | 0 (not detected) |
| Adair Co Rws & Swmd #6 | 27 | 0 (not detected) |
Next steps for Westville, OK
Look up your address in Westville Utility Authority'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 Westville Utility Authority 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.