Mountain View Co-Op, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 2.3 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.
About Mountain View Co-Op
Mountain View Co-Op serves about 95 people through 42 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Clackamas County, Oregon. EPA system ID: OR4101125; phone on file: 971-378-5330. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 1.3 ppb from 1 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Mountain View Co-Op is 2.5 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.3 ppb |
| 2025 | 1 ppb |
| 2019 | 1.7 ppb |
| 2018 | 2.5 ppb |
| 2017 | 1.8 ppb |
| 2016 | 1.9 ppb |
Against other Oregon systems
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. Mountain View Co-Op's 2.3 ppb sits at the 73rd percentile in Oregon and the 76th nationally (higher means more lead).
Other water systems in Clackamas County
85 other systems share Clackamas County; 30 of them have a higher latest lead result than Mountain View Co-Op. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sunrise Water Authority | 50,003 | 3 ppb |
| Lake Oswego Municipal Water | 40,000 | 1.8 ppb |
| Oregon City | 33,940 | 1.84 ppb |
| Oak Lodge Water Services | 30,000 | 2.67 ppb |
| Clackamas River Water | 29,918 | 1.73 ppb |
| West Linn, City Of | 28,000 | 1.84 ppb |
| Wilsonville, City Of | 25,915 | 7.6 ppb |
| Milwaukie, City Of | 20,946 | 0 (not detected) |
| Clackamas River Water - Clairmont | 19,928 | 1.99 ppb |
| Canby Utility | 18,754 | 2.1 ppb |
Next steps for Estacada, OR
Test your own tap with a certified lab first-draw sample; Estacada, 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 Mountain View Co-Op 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.