Washington · population 1,112
Lead pipes in Ilwaco, WA
350 lines still unidentified
Most of Ilwaco (population 1,112) gets its water from City of Ilwaco Water Department. It reported no confirmed lead service lines, but 350 of 533 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of City of Ilwaco Water Department's service lines are lead or galvanized requiring replacement, lower than the Washington average (0.3%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 66%
- Non-lead 34%
Latest lead test for City of Ilwaco Water Department (Jan 2023–Dec 2025): 2 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for City of Ilwaco Water Department.
Water systems serving Ilwaco
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| City of Ilwaco Water DepartmentMain system | 0 | 0 | 350 | 0% |
| Long Beach Water DepartmentServes nearby areas | 0 | 0 | 0 | – |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Ilwaco
The counts above cover the whole water system. To see whether your line is lead, look up your address on City of Ilwaco Water Department's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Long Beachno lead reported
- South Bend59 unknown
- Raymondno lead reported
- Cosmopolis12 lead + galv. lines
- Aberdeenno lead reported
- Longview108 lead + galv. lines
- Kelso4,746 unknown
- Chehalisno lead reported
Check another water system
Questions
Does Ilwaco, WA have lead pipes?
None are confirmed, but City of Ilwaco Water Department still lists 350 service lines as unknown material.
Who supplies water to Ilwaco?
EPA's service area maps place most of Ilwaco in City of Ilwaco Water Department's service area (PWSID WA5335500). Long Beach Water Department also serves parts of the city or nearby areas.
How do I check whether my Ilwaco home has a lead service line?
Search your address on City of Ilwaco Water Department's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Ilwaco be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask City of Ilwaco Water Department whether your street is scheduled and whether it covers the private side.