Basic
$973 – $3,893 per project
Two-stage cartridge system with sediment and carbon housings on the main line, bypass valve and shutoff

Photo: gruntzooki · CC BY-SA 2.0 · Source
Supply and install a whole-house water filtration system (system and plumbing labor) on a city-water home; well-water/RO/UV packages run higher.
Water Filtration in Seattle, Washington typically costs $1,145 to $4,580 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Seattle are 19.0% higher than the national average for water filtration.
National average: $1,000 – $4,000 per project
$973 – $3,893 per project
Two-stage cartridge system with sediment and carbon housings on the main line, bypass valve and shutoff
$1,145 – $4,580 per project
Sediment pre-filter plus tank-style catalytic carbon filter for chlorine and chloramine, bypass valve
$1,431 – $5,725 per project
Sediment pre-filter, larger catalytic carbon tank and scale-reduction stage, bypass loop, pressure gauges
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $468 – $1,872 | job |
| Labor | labor | $469 – $1,876 | job |
| Supplies & Other | supplies | $125 – $499 | job |
| Equipment & Disposal | equipment | $83 – $333 | job |
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local water filtration contractors in Seattle for personalized quotes based on your specific project.