What to know before arranging a visit
Austin’s measured water hardness
A water softener is sized to the measured hardness of your supply. Austin Water’s published Water Quality Summaries report finished (treated) drinking water total hardness of roughly 90 to 115 milligrams per liter as calcium carbonate across the city’s three treatment plants — about 112 to 115 mg/L in the first-quarter 2024 summary. At the standard conversion of about 17 mg/L per grain, that is roughly 5 to 7 grains per gallon, the “moderately hard” band on the U.S. Geological Survey scale. Source: Austin Water Quality Summaries, austintexas.gov.
How a softener is sized
Softener capacity is based on your hardness and daily water use, so the household size and fixture count matter. Ask the installer to confirm your home’s hardness and size the unit to your demand rather than selling a one-size model.
Installation, drain and bypass
A softener needs a connection point, a drain for the regeneration cycle and usually a bypass valve. Those are part of the installation scope and the quote. Confirm exactly what the installer includes, and whether any plumbing changes are needed, before you book.
Hard water and your water heater
Scale from hard water collects in tank and tankless water heaters, reducing efficiency over time. Softening the whole-home supply is one way to slow that; for an on-demand unit see tankless water heater installation in Austin. Ask any provider what they recommend for local water.
Ask for the complete quote.
Confirm the visit charge, proposed work, parts and exclusions before authorizing service.
Use the plumbing quote checklist ↗Your questions, answered
How hard is Austin’s water?
Austin Water’s published summaries report finished drinking water total hardness of roughly 90 to 115 mg/L as calcium carbonate — about 5 to 7 grains per gallon, the “moderately hard” range on the U.S. Geological Survey scale.
Do I need a water softener in Austin?
That is a personal decision based on how the hardness affects your fixtures, appliances and preferences. A softener is sized to measured hardness and household demand; ask an installer to confirm your home’s hardness first.
Where is a water softener installed?
Usually on the main supply line, with a drain for regeneration and a bypass valve. The exact location and any plumbing changes are confirmed by the installer as part of the quote.
Updated October 8, 2026.