Mcminnville Water & Light, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 1.2 ppb (monitoring period 2024-2026). 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
Mcminnville Water & Light serves about 34,515 people through 12,038 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Yamhill County, Oregon. EPA system ID: OR4100497; phone on file: 503-472-6158. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2023 (1.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mcminnville Water & Light is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.2 ppb |
| 2023 | 1.3 ppb |
| 2020 | 2 ppb |
| 2017 | 2 ppb |
How Mcminnville Water & Light 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. Mcminnville Water & Light's 1.2 ppb sits at the 56th percentile in Oregon and the 59th nationally (higher means more lead).
Other water systems in Yamhill County
37 other systems share Yamhill County; 11 of them have a higher latest lead result than Mcminnville Water & Light. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| 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 |
| Delphian School | 350 | 1.1 ppb |
Next steps for Mcminnville, OR
Test your own tap with a certified lab first-draw sample; Mcminnville, 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 Mcminnville Water & Light 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. The action level is dropping - the 10 ppb rule from 2027.