The seller of any real property containing a water heater must certify in writing to a prospective buyer that the water heater has been braced, anchored or strapped to resist falling or horizontal movement due to earthquake motion. The minimum standard for this security is set forth in the California Plumbing Code, which may be more restrictively amended by local or municipal code or ordinance. The certification can be included with the Homeowner’s Guide to Earthquake Safety, in the Real Estate Purchase Contract or Receipt for Deposit, or with the Real Estate Transfer Disclosure Statement.

(Cal. Health & Safety § 19211)