Stephens Co Rw&Sd #1, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 1.39 ppb (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. 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.
About Stephens Co Rw&Sd #1
Stephens Co Rw&Sd #1 serves about 960 people through 547 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 Stephens County, Oklahoma. EPA system ID: OK2006906; phone on file: 580-444-2277. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Stephens Co Rw&Sd #1's lead record
Against the period ending 2019 (1.31 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Stephens Co Rw&Sd #1 is 1.39 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.39 ppb |
| 2019 | 1.31 ppb |
| 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. Stephens Co Rw&Sd #1's 1.39 ppb sits at the 62nd percentile in Oklahoma and the 61st nationally (higher means more lead).
Other water systems in Stephens County
5 other systems share Stephens County; 1 of them has a higher latest lead result than Stephens Co Rw&Sd #1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Duncan Public Utilities Authority | 23,000 | 0 (not detected) |
| Stephens Co Rwd #5 | 6,426 | 0 (not detected) |
| Marlow Municipal Authority | 4,600 | 2.25 ppb |
| Comanche Public Works Authority | 1,649 | 0 (not detected) |
| Stephens Co Rwd #3 (Meridian) | 1,610 | 0.96 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Velma, 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 Stephens Co Rw&Sd #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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.