Mountlake Terrace City Of, WA
No lead results on file with EPA
Latest 90th-percentile lead: no result on file. The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. EPA's database has no Lead and Copper Rule results for this system. Without them there is nothing to go on, so a tap test is the only way to know.
Who runs the water here
Mountlake Terrace City Of serves about 26,402 people through 9,290 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 Snohomish County, Washington. EPA system ID: WA5357250. Ask the utility on your bill for your address in their service line inventory.
Other water systems in Snohomish County
117 other systems share Snohomish County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Alderwood Water District | 245,715 | - |
| Everett Public Works Dept. City Of | 215,774 | 3.5 ppb |
| Marysville Utilities | 88,582 | 2 ppb |
| Lynnwood City Of | 68,204 | - |
| Sno Pud 1 - Lake Stevens | 67,710 | 3.2 ppb |
| Silver Lake Water & Sewer District | 65,033 | - |
| Edmonds City Of | 34,065 | - |
| Mukilteo Water & Wastewater Distr | 31,437 | - |
| Arlington City Of | 29,508 | 0 (not detected) |
| Cross Valley Water District | 24,695 | 3.1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Mountlake Terrace, 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 Mountlake Terrace City Of 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. Systems that went over once often dip back under; here is what that means.