Spar Tree Mhp, OR
Exceeded the action level in the past
Latest 90th-percentile lead: 1.1 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.
Who runs the water here
Spar Tree Mhp serves about 26 people through 16 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: OR4101264; phone on file: 503-788-7370. 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 2.5 ppb from 3.6 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Spar Tree Mhp is 18.6 ppb across 9 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.1 ppb |
| 2025 | 3.6 ppb |
| 2025 | 4 ppb |
| 2022 | 18.6 ppb over 15 |
| 2021 | 18.6 ppb over 15 |
| 2021 | 0.6 ppb |
| 2020 | 14.7 ppb over 10 |
| 2019 | 14.7 ppb over 10 |
| 2016 | 4.5 ppb |
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. Spar Tree Mhp's 1.1 ppb sits at the 53rd percentile in Oregon and the 56th nationally (higher means more lead).
Neighbouring systems
85 other systems share Clackamas County; 58 of them have a higher latest lead result than Spar Tree Mhp. 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 Happy Valley, OR
Test your own tap with a certified lab first-draw sample; Happy Valley, 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 Spar Tree Mhp 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Why an old exceedance still matters: over the limit before, under it now.