South Coffeyville, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 2.7 ppb (monitoring period 2021-2023). 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.
South Coffeyville at a glance
South Coffeyville serves about 790 people through 443 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 Nowata County, Oklahoma. EPA system ID: OK3005305; phone on file: 918-255-6045. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 2.7 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for South Coffeyville is 2.7 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2.7 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
How South Coffeyville 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. South Coffeyville's 2.7 ppb sits at the 82nd percentile in Oklahoma and the 79th nationally (higher means more lead).
Nearby utilities
11 other systems share Nowata County; 1 of them has a higher latest lead result than South Coffeyville. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Nowata Municipal Authority | 3,971 | 1.2 ppb |
| Consolidated Rwd #1 Nowata And Rogers Co | 1,580 | 0 (not detected) |
| Nowata Co Rwd #7 | 1,050 | 1.5 ppb |
| Elm Bend Rwd Inc | 600 | 1.1 ppb |
| Nowata Co Rw & S Dist #1 | 500 | 2.1 ppb |
| Delaware | 456 | 0.96 ppb |
| Nowata Co Rwd #6 | 450 | 0 (not detected) |
| Lenapah Public Works Authority | 298 | 0 (not detected) |
| Nowata County Rwd # 3 | 225 | 0 (not detected) |
| Nowata Co Rwd #2 | 205 | - |
What to do in your house
Test your own tap with a certified lab first-draw sample; South Coffeyville, 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 South Coffeyville 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. Size matters more than most people expect: small vs large water systems.