Steps

Confirm the current phase of SWRCB's transition-period rules for recognized certifying organizations rather than assuming a static requirement
Complete a 40-hour training course and pass written and hands-on practical exams through an SWRCB-recognized third-party certifier such as CA-NV Section AWWA
After receiving third-party certification, register with the applicable county health department and/or local water purveyor, since county-level requirements vary
Track the phased accreditation timeline: SWRCB-recognized certifying organizations are required through the transition period, moving toward a requirement that only ANSI/ISO-17024-accredited certifiers qualify
Renew the CA-NV AWWA (or equivalent) certification on its 3-year cycle

Known gotchas

California has no single statewide backflow tester license — compliance is a patchwork of SWRCB-recognized certifying organizations plus separate county/purveyor registration, so certification status always needs a county-level follow-up check
The certifying-organization accreditation requirement is on a multi-year phase-in; a certifier that was valid previously may not remain recognized after later accreditation deadlines take effect, so verify current status directly with SWRCB rather than relying on an older reference
County registration requirements (fees, forms) are independent of the state-recognized certification and must be handled separately for each county worked in

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Confirm California backflow tester certification and registration under the current SWRCB certifying-organization framework

Steps

Known gotchas

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