Grand Prairie Water Supply Co, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 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.
Grand Prairie Water Supply Co at a glance
Grand Prairie Water Supply Co serves about 110 people through 47 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Linn County, Oregon. EPA system ID: OR4100024; phone on file: 541-905-7321. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2021 (0.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Grand Prairie Water Supply Co is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.4 ppb |
| 2021 | 0.5 ppb |
| 2018 | 2 ppb |
Against other Oregon systems
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. Grand Prairie Water Supply Co's 1.4 ppb sits at the 59th percentile in Oregon and the 62nd nationally (higher means more lead).
Nearby utilities
38 other systems share Linn County; 18 of them have a higher latest lead result than Grand Prairie Water Supply Co. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Albany, City Of | 57,997 | 2.7 ppb |
| Lebanon, City Of | 18,945 | 8.16 ppb |
| Sweet Home, City Of | 10,322 | 0 (not detected) |
| Harrisburg, City Of | 3,684 | 4.02 ppb |
| City Of Millersburg | 2,615 | 1.2 ppb |
| Brownsville, City Of | 1,906 | 5.56 ppb |
| Mill City Water Department | 1,830 | 2.3 ppb |
| Lyons Mehama Water District | 1,300 | 3.6 ppb |
| Scio, City Of | 900 | 4.7 ppb |
| Halsey, City Of | 800 | 7.64 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Albany, 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 Grand Prairie Water Supply Co 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. The action level is dropping - the 10 ppb rule from 2027.