Chehalem Terrace Water Company, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 0.58 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.
Who runs the water here
Chehalem Terrace Water Company serves about 30 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: OR4105426; phone on file: 503-554-8333. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.42 ppb from 2 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Chehalem Terrace Water Company is 12 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.58 ppb |
| 2021 | 2 ppb |
| 2018 | 2 ppb |
| 2017 | 12 ppb over 10 |
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. Chehalem Terrace Water Company's 0.58 ppb sits at the 43rd percentile in Oregon and the 44th nationally (higher means more lead).
Neighbouring systems
37 other systems share Yamhill County; 17 of them have a higher latest lead result than Chehalem Terrace Water Company. 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 |
Your move
Test your own tap with a certified lab first-draw sample; Newberg, 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 Chehalem Terrace Water Company 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. Size matters more than most people expect: small vs large water systems.