Is a water softener worth it here?
San Gabriel County Water District averages about 97 ppm hardness.
Updated · 3 min read
The quick version
At about 97 ppm average (moderately hard), a softener is a comfort and maintenance choice rather than a must. It helps most if you have a tankless heater, see heavy spotting, or the reading at your tap is near the district's 200 ppm upper range.
Sections
What the numbers say
San Gabriel County Water District's 2025 report lists hardness from 17 to 200 ppm with an average of 97.4. The USGS calls 61 to 120 mg/L moderately hard.
Hardness varies by well and season, so your tap can read different from the average. A cheap test strip tells you where your house sits.
When a softener pays off
- You have a tankless heater that needs frequent descaling
- Glass shower doors and fixtures crust quickly
- Your test strip reads near the high end of the range
- You want to reduce scale in dishwashers and kettles
Choosing a system
Salt-based ion exchange softeners swap calcium and magnesium for sodium. Salt-free conditioners change how minerals behave so they scale less, but they do not remove hardness.
Installation basics
A softener goes on the main line after the hose bibs you want to stay hard, usually near where water enters the house or in the garage. It needs a drain and an outlet for the control head.
We add a bypass valve so the softener can be isolated, and leave a cold line to the kitchen unsoftened if you want it for drinking.
Questions we hear
Does softened water taste salty?
At moderate hardness, the added sodium is small and most people do not notice it. A separate drinking tap avoids it entirely.
Can a softener feed the garden?
Most installs bypass outdoor bibs so landscape water is not softened.
Is a softener required for a tankless heater?
No, but it cuts down how often the unit needs descaling.