Columbia View Water System, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 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.
Columbia View Water System at a glance
Columbia View Water System serves about 500 people through 122 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Walla Walla County, Washington. EPA system ID: WA5314176. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Columbia View Water System is 1.9 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.1 ppb |
| 2021 | 1 ppb |
| 2018 | 1.9 ppb |
How Columbia View Water System compares
Of the 2,218 Washington systems with a lead result, the median latest reading is 1 ppb; 18 are over 15 ppb right now and 62 have gone over at some point. Columbia View Water System's 1.1 ppb sits at the 53rd percentile in Washington and the 57th nationally (higher means more lead).
Nearby utilities
32 other systems share Walla Walla County; 13 of them have a higher latest lead result than Columbia View Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Walla Walla Water Division | 42,959 | 4.4 ppb |
| College Place Water Dept | 8,147 | 2.1 ppb |
| Snake River Housing Water System | 3,036 | 0 (not detected) |
| Waitsburg City Of | 1,817 | 1.7 ppb |
| Consolidated Irrigation Dist 14 | 1,555 | 0 (not detected) |
| Walla Walla University | 1,273 | 0 (not detected) |
| Valle Lindo Homes | 787 | 0 (not detected) |
| Veterans Affair Med Ctr Dept Of | 785 | 1 ppb |
| Great Basin Water Burbank | 656 | 0 (not detected) |
| Green Tank Irr District 11 | 553 | 0.6 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; West Richland, WA 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 Columbia View Water System 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.