Black Mountain Water District, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2022-2024). 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.
Who runs the water here
Black Mountain Water District serves about 43 people through 88 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Morrow County, Oregon. EPA system ID: OR4100370; phone on file: 541-720-0514. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Black Mountain Water District is 1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1 ppb |
| 2021 | 0 (not detected) |
| 2018 | 1 ppb |
How Black Mountain Water District 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. Black Mountain Water District's 1 ppb sits at the 50th percentile in Oregon and the 50th nationally (higher means more lead).
Neighbouring systems
7 other systems share Morrow County; 1 of them has a higher latest lead result than Black Mountain Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Boardman, City Of | 5,749 | 0 (not detected) |
| Irrigon, City Of | 2,133 | 2 ppb |
| Heppner, City Of | 1,187 | 0.54 ppb |
| Ione, City Of | 330 | 1 ppb |
| Lexington, Town Of | 255 | 0 (not detected) |
| Country Garden Estates Mhp | 175 | 0 (not detected) |
| Green Acres | 97 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Hermiston, 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 Black Mountain 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.