Lead Service Lines in KING COUNTY WATER DISTRICT NO 90
King County Water District No. 90 serves approximately 20,100 people in Washington State. Like all water utilities, it is required by federal law to identify and manage lead service lines—the pipes that connect homes to the main water supply.
What We Know About This Water System
King County Water District No. 90 draws its water from surface sources. The utility has not yet completed a public lead service line inventory, or that inventory data is not currently available through federal reporting channels.
Why this matters: Lead service lines are the most common source of lead in tap water. Without a full inventory, neither the utility nor residents know the true scope of potential exposure. Federal rules require water systems to locate and document all lead service lines by specific deadlines.
What You Should Do Now
Because no inventory is publicly available yet, you cannot see exactly how many lead lines this utility serves or whether your address is affected. Here's how to get clarity:
Contact the utility directly. Call King County Water District No. 90 and ask:
- Does my home have a lead service line?
- When will the lead service line inventory be complete and public?
- Are there any lead reduction steps I can take in the meantime (like flushing protocols or testing)?
Get your water tested. You don't need to wait for the utility's inventory. A simple lead test costs $20–50 and tells you if lead is in your water right now. Your local health department can recommend certified labs.
If you have young children or are pregnant: Lead exposure during these critical windows carries real health risks. Contact your pediatrician or local health department if you're concerned, and prioritize testing.
Federal Requirements and Timelines
Water systems are required to complete lead service line inventories under the Lead and Copper Rule Revisions (LCRR). If this utility hasn't published an inventory yet, ask when one will be available and whether federal funding has been approved to support the work.
Next steps for residents
- Call the water district directly to ask about your specific address and the inventory timeline
- Consider having your water tested for lead at a certified lab
- If you have young children, discuss lead exposure risks with your pediatrician
- Check back on this page for updates once the inventory becomes public
Key figures
| Total inventoried lines | 0 |
|---|---|
| BIL/IIJA funding received | — |
| Replacement plan status | Not reported |
| Utility's LCRR inventory | Not provided |
Frequently asked
How do I know if my home has a lead service line?
The best way is to contact King County Water District No. 90 directly and ask about your address. You can also look at your water bill or property records—some utilities note pipe material there. An independent water test will tell you if lead is present in your tap water right now.
Is lead in my water dangerous?
Lead in drinking water is a real health concern, especially for children and pregnant people. For specific health questions, contact the CDC or your doctor. A water test tells you if lead is present in your home.
What should I do if I think I have a lead service line?
First, get your water tested. Then contact the utility to ask about replacement programs or rebates. Some utilities offer financial assistance or accelerated replacement for high-risk households.
When does King County Water District No. 90 have to finish its lead inventory?
Federal rules set deadlines for lead service line inventories. Contact the utility or check the Washington Department of Health for the specific deadline that applies to this system.