Secure Your Water Heater for Earthquakes in 4 Easy Steps

In California, securing your water heater against earthquakes is not optional — state law requires tank water heaters to be braced or strapped so they cannot tip over during a quake. A toppled water heater can rupture its gas and water lines, creating a fire, flood, and gas-leak hazard all at once. The good news is that doing it right comes down to four clear steps.

By Anthony Hamilton, Co-Founder, THE Water Heater Company (21+ years in water heaters). Reviewed by THE Water Heater Company's factory-trained technical team.

Definition: what "properly secured" means

A correctly secured tank is strapped to the wall framing with metal strapping and connected with flexible (rather than rigid) gas and water lines, so the whole assembly can ride out shaking without shearing off. California's requirement calls for two straps on a tank water heater. Below are the four steps we follow on every job.

Step 1: Install two seismic straps

California requires water heaters to be secured with two straps — one around the upper third of the tank and one around the lower third, keeping the lower strap a safe distance above the controls. The straps are heavy-gauge metal anchored into wall studs or masonry, not just screwed into drywall. Two straps prevent the tank from rocking off its base or pivoting at the top.

Step 2: Use flexible connectors

Rigid gas and water pipe can snap when a tank shifts. Flexible connectors absorb movement, so even if the tank moves slightly the lines stay intact. A flexible gas connector paired with a seismic gas shutoff valve is the gold standard for reducing post-quake gas risk.

Step 3: Get the location right

Where the tank sits matters. It should be on a firm, level base, clear of items that could fall against it, and — in a garage — elevated and protected per local requirements. Tanks crammed into tight closets or perched on weak platforms are far more likely to fail in a quake. If your unit is aging or poorly placed, our water heater page covers replacement and relocation.

Step 4: Have it professionally inspected

Strapping that looks fine can still be anchored into the wrong material or sized incorrectly. A professional inspection confirms the straps hit solid framing, the connectors are rated correctly, and the gas connection is leak-free. This is also the moment to add a seismic valve if you don't have one.

When it matters and the failure mode

It matters the instant a quake begins. The classic failure is an unstrapped or single-strapped tank that rocks, falls, and tears its gas line — now you have escaping gas next to a pilot or electrical source. Two properly anchored straps plus flexible connectors are what prevent that chain of events.

Proof: a water-heater specialist's job

THE Water Heater Company installs and secures water heaters every day across Ventura, Los Angeles, and Orange counties. We are a licensed, insured, family-owned specialist (CA Contractor License #1045699) with 42 years of combined experience, and we bring fully stocked trucks so we can strap, replace, or upgrade in a single visit.

Action: make it part of your quake plan

Pair strapping with a professionally installed earthquake valve, understand the danger it prevents in how a seismic valve prevents gas leaks after a quake, and see the complete checklist in our earthquake preparedness tips for California homeowners.

THE Water Heater Company offers same-day service, 7 days a week, from 7:00 AM to 8:30 PM. Call (877) 798-7487 or book online to have your water heater secured the right way.