San Diego County · 2026
Water treatment cost in San Diego
Honest, region-specific price ranges for the water treatment San Diego homes actually need. We publish real installed ranges, not fabricated quotes. The exact number always comes from a free in-home water test. Pick a guide to see costs by city and region.
Water Softener Cost
$2,200 to $4,500 installed
See water softener costsWhole-House Water Filtration Cost
$2,200 to $5,200 installed
See whole-house water filtration costsReverse Osmosis System Cost
$350 to $900 installed
See reverse osmosis system costsWater Testing Cost
free in-home test, $50 to $300 for a lab panel
See water testing costsPFAS Removal Cost
$400 to $950 for point-of-use RO
See pfas removal costsWell Water Treatment Cost
$2,500 to $6,000 installed
See well water treatment costs Serving San Diego County
Not sure which system your home needs?
Call for a free in-home water test. We measure your water, then give you a written price with no pressure.