Westridge Subdivision, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 0.86 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.
About Westridge Subdivision
Westridge Subdivision serves about 78 people through 39 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Crook County, Oregon. EPA system ID: OR4105998; phone on file: 458-218-5665. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2021 (0.28 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Westridge Subdivision is 1.71 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.86 ppb |
| 2021 | 0.28 ppb |
| 2021 | 0.47 ppb |
| 2019 | 1.71 ppb |
| 2016 | 0.79 ppb |
How Westridge Subdivision compares
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. Westridge Subdivision's 0.86 ppb sits at the 47th percentile in Oregon and the 48th nationally (higher means more lead).
Other water systems in Crook County
17 other systems share Crook County; 7 of them have a higher latest lead result than Westridge Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Prineville, City Of | 11,000 | 1.9 ppb |
| Avion Wc - Brasada Ranch | 1,200 | 1 ppb |
| Avion Wc - Red Cloud | 585 | 0 (not detected) |
| Ochoco West Wtr & San Authority | 400 | 3.67 ppb |
| High Desert Estates | 380 | 0 (not detected) |
| Highland Subdivision Wd | 335 | 0 (not detected) |
| Idleway Improvement District | 183 | 0.86 ppb |
| Terrace Mobile Plaza | 152 | 0 (not detected) |
| Barnes Butte Hoa | 148 | 0 (not detected) |
| Prineville Mobile Home Park | 130 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Prineville, 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 Westridge Subdivision whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1460 ppb (copper action level 1,300 ppb).
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. Systems that went over once often dip back under; here is what that means.