Water heaters in San Antonio, Texas
Water hardness, permits, utilities and rebates for San Antonio, TX, each linked to the city or utility source.
Updated Researched by Strive LeadGenBexar County
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Short answer
San Antonio gets its water from San Antonio Water System (SAWS), city-owned utility, measured at 15-20 gpg (about 257-342 mg/L) typical. Replacing a water heater needs a permit.
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Water Heater Plumbers serving San Antonio, not yet rated
These companies passed our license and record checks and say they serve San Antonio, but we have no Google rating for them yet, so they are not scored. A to Z, not ranked. No company here pays us.
- ABC Home & Commercial Services Based in Austin · License TSBPE Responsible Master Plumber M-32147
Before you hire in San Antonio
From city, county and utility sources, checked Oct 14, 2026
- Water utilitySan Antonio Water System (SAWS), city-owned utilitySource
- Water hardness15-20 gpg (about 257-342 mg/L) typicalSource
- Water heater permitRequired. Who may pull it: Licensed plumbing contractor. Like-for-like replacement of an existing water heater qualifies for a Limited Service and Repair (LSR) permit, obtained within three working days after the work, with contractor self-certification in lieu of inspection (owner may request a free DSD inspection); type/size changes (e.g. tank to tankless, electric to gas) need a general plumbing permit and DSD inspectionsSource
- Gas utilityCPS Energy (city-owned electric and gas)Source
- Electric utilityCPS Energy (city-owned electric and gas)Source
Read before you hire
- How much does it cost to replace a water heater in 2026?
- How long does a water heater last? Lifespan by type
- Why is my water heater popping or rumbling?
- What does an anode rod do, and when should it be replaced?
- How much does a tankless water heater cost installed?
- Is there still a federal tax credit for heat pump water heaters?
Other Texas cities
Water Heater Facts is an information and referral service run by Strive LeadGen LLC. Contractors may pay us when we connect a homeowner with one. Local facts come from city, county and utility sources linked above; rules change, so confirm with the city before you start.