Bonney Lake Water Department City, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.4 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
Bonney Lake Water Department City serves about 43,371 people through 18,796 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Pierce County, Washington. EPA system ID: WA5307650. Ask the utility on your bill for your address in their service line inventory.
Bonney Lake Water Department City's lead record
Against the period ending 2020 (1.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Bonney Lake Water Department City is 6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2.4 ppb |
| 2020 | 1.8 ppb |
| 2017 | 6 ppb |
How Bonney Lake Water Department City 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. Bonney Lake Water Department City's 2.4 ppb sits at the 75th percentile in Washington and the 77th nationally (higher means more lead).
Neighbouring systems
226 other systems share Pierce County; 68 of them have a higher latest lead result than Bonney Lake Water Department City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tacoma Water Division City Of | 446,245 | 0 (not detected) |
| Puyallup City Of | 94,520 | 2.7 ppb |
| Lakewood Water District | 82,425 | 1.1 ppb |
| Southwood | 64,155 | 1.6 ppb |
| Firgrove Mutual Inc | 36,168 | 2.9 ppb |
| Jblm Lewis | 35,414 | 0 (not detected) |
| Spanaway Water Company | 34,506 | 2.4 ppb |
| Parkland Light & Water Company | 33,775 | 2.4 ppb |
| Fife Dept Of Public Works | 29,091 | 2 ppb |
| Summit Water & Supply Co | 19,125 | 2.3 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Buckley, 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 Bonney Lake Water Department City 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. Systems that went over once often dip back under; here is what that means.