Deer Island Heights Ws, OR
Above the federal action level
Latest 90th-percentile lead: 166 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. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
About Deer Island Heights Ws
Deer Island Heights Ws serves about 60 people through 21 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Columbia County, Oregon. EPA system ID: OR4105114; phone on file: 503-397-1744. 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 165 ppb from 1 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Deer Island Heights Ws is 166 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 166 ppb over 15 |
| 2025 | 1 ppb |
| 2025 | 0 (not detected) |
| 2020 | 0.7 ppb |
| 2017 | 2 ppb |
| 2016 | 2 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. Deer Island Heights Ws's 166 ppb sits at the 100th percentile in Oregon and the 100th nationally (higher means more lead).
Neighbouring systems
37 other systems share Columbia County; 0 of them have a higher latest lead result than Deer Island Heights Ws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| St Helens, City Of | 13,410 | 1.03 ppb |
| Scappoose, City Of | 8,710 | 0 (not detected) |
| Mcnulty Water Pud | 2,500 | 0 (not detected) |
| Vernonia, City Of | 2,100 | 0 (not detected) |
| Clatskanie, City Of | 2,096 | 1.27 ppb |
| Warren Water Association | 2,050 | 0 (not detected) |
| Columbia City Mun Waterworks | 1,995 | 0 (not detected) |
| City Of Rainier | 1,932 | 0 (not detected) |
| Western Hills Mh Estates | 375 | 0 (not detected) |
| Fishhawk Lake Reserve And Community | 350 | 6.25 ppb |
Next steps for St Helens, OR
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Deer Island Heights Ws 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. Size matters more than most people expect: small vs large water systems.