Hiland Wc - Hillview, OR
Above the federal action level
Latest 90th-percentile lead: 25.8 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
Who runs the water here
Hiland Wc - Hillview serves about 38 people through 15 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Yamhill County, Oregon. EPA system ID: OR4105917; phone on file: 503-554-8333. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 23.52 ppb from 2.28 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Hiland Wc - Hillview is 25.8 ppb across 10 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 25.8 ppb over 15 |
| 2025 | 2.28 ppb |
| 2024 | 1.29 ppb |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
How Hiland Wc - Hillview 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. Hiland Wc - Hillview's 25.8 ppb sits at the 99th percentile in Oregon and the 99th nationally (higher means more lead).
Other water systems in Yamhill County
37 other systems share Yamhill County; 0 of them have a higher latest lead result than Hiland Wc - Hillview. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mcminnville Water & Light | 34,515 | 1.2 ppb |
| Newberg, City Of | 25,138 | 2.32 ppb |
| Sheridan, City Of | 6,494 | 0 (not detected) |
| Lafayette, City Of | 4,423 | 0 (not detected) |
| Dundee, City Of | 2,960 | 1.1 ppb |
| Dayton, City Of | 2,535 | 0 (not detected) |
| Carlton, City Of | 2,270 | 1.8 ppb |
| Willamina, City Of | 2,239 | 2.4 ppb |
| Amity, City Of | 1,810 | 0 (not detected) |
| Yamhill, City Of | 1,199 | 2.92 ppb |
What to do in your house
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Hiland Wc - Hillview whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1430 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. 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.