Spo Co Water Dist 3 Sys 5, WA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Spo Co Water Dist 3 Sys 5
Spo Co Water Dist 3 Sys 5 serves about 485 people through 196 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Spokane County, Washington. EPA system ID: WA5393355. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 2.6 ppb from 2.6 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Spo Co Water Dist 3 Sys 5 is 3.5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 2.6 ppb |
| 2020 | 3.5 ppb |
| 2017 | 1 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. Spo Co Water Dist 3 Sys 5's reported as 0 (not detected) sits at the 27th percentile in Washington and the 22nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
86 other systems share Spokane County; 54 of them have a higher latest lead result than Spo Co Water Dist 3 Sys 5. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Spokane City Of | 346,138 | 2 ppb |
| Whitworth Water District 2 | 26,883 | 1.3 ppb |
| Vera Water & Power | 24,692 | 20.8 ppb |
| Consolidated Irrig Dist 19 System 2 | 21,220 | 1.3 ppb |
| Spo Co Water Dist 3 Sys 1 | 19,035 | 1.6 ppb |
| Modern Electric Water Co | 18,487 | 0 (not detected) |
| Eastern Washington University | 17,108 | 6.5 ppb |
| Cheney City Of | 16,954 | 1.3 ppb |
| Liberty Lake Sewer & Water District | 14,500 | 1.5 ppb |
| Fairchild Air Force Base | 9,544 | 4.2 ppb |
Next steps for Spokane, WA
Look up your address in Spo Co Water Dist 3 Sys 5's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Spo Co Water Dist 3 Sys 5 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. A zero today does not rule out a jump later - the rules are tightening in 2027.