Spanaway Water Company, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.4 ppb (monitoring period 2023-2025). 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
Spanaway Water Company serves about 34,506 people through 12,155 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in Pierce County, Washington. EPA system ID: WA5382850. Ask the utility on your bill for your address in their service line inventory.
Spanaway Water Company's lead record
Against the period ending 2022 (1.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Spanaway Water Company is 4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.4 ppb |
| 2022 | 1.7 ppb |
| 2019 | 3.4 ppb |
| 2016 | 4 ppb |
How Spanaway Water Company 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. Spanaway Water Company'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 Spanaway Water Company. 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 |
| Bonney Lake Water Department City | 43,371 | 2.4 ppb |
| Firgrove Mutual Inc | 36,168 | 2.9 ppb |
| Jblm Lewis | 35,414 | 0 (not detected) |
| 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Spanaway, 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 Spanaway Water Company 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. The action level is dropping - the 10 ppb rule from 2027.