Us Army Ammunition Plant, OK
Lead detected, under the action levels
Latest 90th-percentile lead: 1.8 ppb (monitoring period 2024-2026). 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.
Us Army Ammunition Plant at a glance
Us Army Ammunition Plant serves about 1,872 people through 298 service connections, which makes it a small system under EPA's size classes. It is federally owned and draws surface water, in Pittsburg County, Oklahoma. EPA system ID: OK1020605; phone on file: 918-420-6259. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Us Army Ammunition Plant's lead record
That is up 1.8 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Us Army Ammunition Plant is 5.6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.8 ppb |
| 2023 | 0 (not detected) |
| 2020 | 5.6 ppb |
| 2017 | 0 (not detected) |
How Us Army Ammunition Plant 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. Us Army Ammunition Plant's 1.8 ppb sits at the 70th percentile in Oklahoma and the 67th nationally (higher means more lead).
Other water systems in Pittsburg County
21 other systems share Pittsburg County; 11 of them have a higher latest lead result than Us Army Ammunition Plant. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mcalester Pwa | 18,206 | 3.6 ppb |
| Longtown Rw&Sd #1 (Pittsburg Co.) | 5,444 | 2.1 ppb |
| Adamson Rwd #8 | 4,221 | 6.38 ppb |
| Hartshorne | 2,300 | 2.9 ppb |
| Pittsburg Co. Pwa (Crowder) | 2,203 | 0 (not detected) |
| Krebs Utility Authority | 2,051 | 0 (not detected) |
| Pittsburg Co. Rwd #7 (Arpelar) | 2,040 | 2.31 ppb |
| Indianola Rwd #18 | 2,000 | 0 (not detected) |
| Pittsburg Co. Rwd #5 | 1,750 | 1.4 ppb |
| Pittsburg Co. Rwd #14 | 1,680 | 3.18 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Mcalester, 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 Us Army Ammunition Plant 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. The action level is dropping - the 10 ppb rule from 2027.