Colville Water Department, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 ppb (monitoring period 2021-2023). 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
Colville Water Department serves about 4,945 people through 2,919 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Stevens County, Washington. EPA system ID: WA5314200. Ask the utility on your bill for your address in their service line inventory.
Colville Water Department's lead record
That is down 2.7 ppb from 3.8 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Colville Water Department is 4.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.1 ppb |
| 2020 | 3.8 ppb |
| 2017 | 4.4 ppb |
Against other Washington systems
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. Colville Water Department's 1.1 ppb sits at the 53rd percentile in Washington and the 57th nationally (higher means more lead).
Other water systems in Stevens County
32 other systems share Stevens County; 8 of them have a higher latest lead result than Colville Water Department. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Stevens Co Pud - Suncrest | 7,484 | 1.4 ppb |
| Stevens Co Pud - Deer Lake | 2,884 | 0 (not detected) |
| Kettle Falls Water Dept | 2,698 | 0 (not detected) |
| Chewelah Water Dept South | 2,615 | 3.1 ppb |
| Stevens Co Pud - Loon Lake | 2,487 | 0 (not detected) |
| Stevens Co Pud - Waitts Lake | 1,216 | 0 (not detected) |
| Stevens Co Pud - Clayton | 725 | 0 (not detected) |
| Stevens Co Pud - Valley | 550 | 0 (not detected) |
| Chewelah Water Dept North | 350 | 1.4 ppb |
| Springdale Town Of | 315 | 0.7 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Colville, 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 Colville Water Department 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.