Dikeside Moorage, OR
Above the federal action level
Latest 90th-percentile lead: 16.4 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.
Dikeside Moorage at a glance
Dikeside Moorage serves about 45 people through 29 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: OR4101411; phone on file: 503-475-4514. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 14.4 ppb from 2 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Dikeside Moorage is 16.4 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 16.4 ppb over 15 |
| 2023 | 2 ppb |
| 2020 | 1 ppb |
| 2017 | 9 ppb |
How Dikeside Moorage 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. Dikeside Moorage's 16.4 ppb sits at the 99th percentile in Oregon and the 99th nationally (higher means more lead).
Other water systems in Columbia County
37 other systems share Columbia County; 1 of them has a higher latest lead result than Dikeside Moorage. 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 |
Your move
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 Dikeside Moorage 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. Systems that went over once often dip back under; here is what that means.