Sequoyah Co. Rwd #4, OK
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2019-2021). 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 Sequoyah Co. Rwd #4
Sequoyah Co. Rwd #4 serves about 1,750 people through 823 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 Sequoyah County, Oklahoma. EPA system ID: OK3006809; phone on file: 918-774-9869. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 5 ppb from 5 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Sequoyah Co. Rwd #4 is 5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 0 (not detected) |
| 2018 | 5 ppb |
| 2017 | 0 (not detected) |
How Sequoyah Co. Rwd #4 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. Sequoyah Co. Rwd #4's reported as 0 (not detected) sits at the 32nd percentile in Oklahoma and the 30th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
13 other systems share Sequoyah County; 3 of them have a higher latest lead result than Sequoyah Co. Rwd #4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sequoyah Co. Rwd #8 | 13,460 | 0 (not detected) |
| Sallisaw | 8,510 | 1.1 ppb |
| Muldrow Pwa | 3,104 | 9.6 ppb |
| Sequoyah Co. Rwd #7 | 2,948 | 0 (not detected) |
| Roland | 2,842 | 0 (not detected) |
| Gore Pwa | 1,688 | 0 (not detected) |
| Vian | 1,445 | 0 (not detected) |
| East Central Oklahoma Water Authority | 1,200 | 0 (not detected) |
| Sequoyah Co. Rwd #5 | 1,075 | 0 (not detected) |
| Sequoyah Co. Rwd #3 | 1,040 | 1.5 ppb |
What to do in your house
Look up your address in Sequoyah Co. Rwd #4'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 Sequoyah Co. Rwd #4 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. Small systems behave differently: why small systems go over more often.