Cowlitz County, WA · PWSID WA5348100
Longview Water Department lead service lines
108 lead or galvanized lines to replace
Longview Water Department reported 0 lead and 108 galvanized-requiring-replacement service lines out of 14,529 in its inventory. That's about 1 in 135 lines. Another 33 (0.2%) are still listed as unknown material.
Ranks #18 of 112 Washington systems with confirmed lead lines, and #1,773 nationally.
0.7% of Longview Water Department's service lines are lead or galvanized requiring replacement. That's higher than the Washington average (0.3%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0.7%
- Unknown 0.2%
- Non-lead 99%
Total service lines reported: 14,529. Reported all required service line types. Population served: 57,617; 14,578 connections.
Lead test results
Longview Water Department's most recent 90th-percentile lead result (Jan 2021–Dec 2023) was not detected, below both the 15 ppb action level and the 10 ppb level that takes effect in 2027. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 108 in 2025 Q1 to 108 in 2026 Q3: no change. Lines of unknown material went from 33 to 33, no change.
Quarterly counts reported to EPA. A drop usually means lines were replaced or confirmed non-lead; a rise usually means more lines were identified. Replacement progress rankings.
Lead rule violations
EPA's data lists no Lead and Copper Rule violations for Longview Water Department since 2015. That covers testing, reporting, corrosion control and public notice requirements; it isn't a guarantee about any individual home.
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Longview Water Department's main water source is groundwater (wells). It buys treated water from City of Kelso. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Longview Water Department is responsible for its own service line inventory and replacement program. It sells water to 2 other water systems: Beacon Hill Water & Sewer District, City of Kelso.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Longview Water Department whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Cowlitz County
Cities served
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| City of Kelso | 0 | 4,746 |
| City of Kalama | 2 | 1,699 |
| Toutle Community Regional Water | 11 | 0 |
| Carrolls Water Assn | 0 | 27 |
| Ryderwood Improvement & Service As | 23 | 0 |
| Cougar Crest | 0 | 55 |
| Davis Terrace Water Assn | 0 | 61 |
| Toutle River View | 2 | 0 |
Check another water system
Questions
Does Longview Water Department have lead pipes?
Yes. Longview Water Department reported 0 lead service lines and 108 galvanized lines that must be replaced, out of 14,529 total. 33 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on Longview Water Department's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will Longview Water Department replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has Longview Water Department had lead violations?
EPA's data shows no Lead and Copper Rule violations since 2015 for Longview Water Department.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "Longview Water Department lead service lines," https://leadpipemap.com/wa/longview-water-department/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.