Prairie City, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 1.43 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 Prairie City
Prairie City serves about 841 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 Grant County, Oregon. EPA system ID: OR4100673; phone on file: 541-820-3636. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Prairie City's lead record
Against the period ending 2022 (1.72 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Prairie City is 5.27 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.43 ppb |
| 2022 | 1.72 ppb |
| 2019 | 5.27 ppb |
| 2018 | 3.16 ppb |
| 2017 | 1.76 ppb |
| 2016 | 1.23 ppb |
Where this result ranks
Of the 909 Oregon systems with a lead result, the median latest reading is 1 ppb; 15 are over 15 ppb right now and 71 have gone over at some point. Prairie City's 1.43 ppb sits at the 60th percentile in Oregon and the 63rd nationally (higher means more lead).
Neighbouring systems
7 other systems share Grant County; 3 of them have a higher latest lead result than Prairie City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| John Day, City Of | 1,617 | 1.7 ppb |
| Canyon City Water Department | 666 | 1.86 ppb |
| Mount Vernon, City Of | 510 | 1.25 ppb |
| Seneca, City Of | 200 | 1.05 ppb |
| Long Creek, City Of | 173 | 2.12 ppb |
| Dayville, City Of | 155 | 1.28 ppb |
| Monument, City Of | 115 | 0.91 ppb |
Next steps for Prairie City, OR
Test your own tap with a certified lab first-draw sample; Prairie City, OR 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 Prairie City 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.