San Diego Water
Understanding San Diego's water
Where our water comes from, why it is hard, how chloramine affects taste, and what hardness does to a home. Sourced to agency reports.
Read the guideLearn
Understand your water before you spend a dollar on it
San Diego has some of the hardest water in the country, and the water treatment industry is not always straight with people about what that means. These guides explain how the water here actually works, what each kind of system does, and how to tell what your home needs — including when the answer is nothing.
Start Here
The two guides worth reading first
Between them, these cover where San Diego's water comes from and whether treating it makes sense for your home.
Featured
Popular reading
All Topics
Browse by subject
Water Basics
Why home water treatment matters, what the equipment actually does, and how to tell what your home needs.
San Diego Water
Where our water comes from, why it is hard, and what that means neighborhood by neighborhood.
Water Softeners
Hardness, scale, salt-based softening, and salt-free conditioning — how each works and when it fits.
Reverse Osmosis
How RO purifies drinking water, what it removes, and how it compares to filters and bottled water.
Owning a System
Installation, maintenance, salt, filter changes, and getting the most out of your system.
Still not sure what your home needs?
Tell us your address and what you are noticing. We will tell you what makes sense — including if the answer is nothing.
(619) 363-3410