Mangum Pws, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 1.25 ppb (monitoring period 2022-2024). 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.
Who runs the water here
Mangum Pws serves about 2,924 people through 1,543 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 Greer County, Oklahoma. EPA system ID: OK2002802; phone on file: 580-782-2250. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (0.86 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mangum Pws is 3.93 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.25 ppb |
| 2023 | 0.86 ppb |
| 2020 | 1.45 ppb |
| 2017 | 2.57 ppb |
| 2016 | 3.93 ppb |
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. Mangum Pws's 1.25 ppb sits at the 59th percentile in Oklahoma and the 60th nationally (higher means more lead).
Nearby utilities
6 other systems share Greer County; 1 of them has a higher latest lead result than Mangum Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Granite Pws | 1,425 | 1.19 ppb |
| Oklahoma State Reformatory | 999 | 0 (not detected) |
| Harmon Electric | 188 | 1 ppb |
| Reed Water Corp | 175 | 2.27 ppb |
| Willow | 114 | 0 (not detected) |
| Thirsty Water Corp | 81 | 0.9 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Mangum, 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 Mangum Pws 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.