Lorna Water District, OR
Exceeded the action level in the past
Latest 90th-percentile lead: 5.01 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Lorna Water District at a glance
Lorna Water District serves about 212 people through 98 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Multnomah County, Oregon. EPA system ID: OR4100662; 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.
Every lead result on file
Against the period ending 2025 (4.89 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lorna Water District is 21 ppb across 19 monitoring periods, 3 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.01 ppb |
| 2025 | 4.89 ppb |
| 2024 | 4.4 ppb |
| 2023 | 7.7 ppb |
| 2023 | 6.1 ppb |
| 2022 | 11.7 ppb over 10 |
| 2022 | 11 ppb over 10 |
| 2021 | 21 ppb over 15 |
| 2021 | 10.9 ppb over 10 |
| 2020 | 13.8 ppb over 10 |
| 2020 | 13 ppb over 10 |
| 2019 | 11.6 ppb over 10 |
| 2019 | 13.1 ppb over 10 |
| 2018 | 11.9 ppb over 10 |
| 2018 | 12.6 ppb over 10 |
| 2017 | 17 ppb over 15 |
| 2017 | 14.5 ppb over 10 |
| 2016 | 17.4 ppb over 15 |
| 2016 | 13 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. Lorna Water District's 5.01 ppb sits at the 89th percentile in Oregon and the 91st nationally (higher means more lead).
Nearby utilities
24 other systems share Multnomah County; 3 of them have a higher latest lead result than Lorna Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Portland Water Bureau | 666,200 | 5.01 ppb |
| Gresham, City Of | 73,932 | 3.81 ppb |
| Rockwood Pud | 65,443 | 3.4 ppb |
| Troutdale, City Of | 16,185 | 1.2 ppb |
| Fairview, City Of | 9,963 | 6.89 ppb |
| Wood Village, City Of | 4,388 | 1.4 ppb |
| Corbett Water District | 2,954 | 6.2 ppb |
| Pleasant Home Water District | 1,510 | 5.01 ppb |
| Palatine Hill Water District | 1,500 | 5.01 ppb |
| Lusted Water District | 1,200 | 4 ppb |
What to do in your house
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 Lorna Water District 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. Why an old exceedance still matters: over the limit before, under it now.