Full Practice Exam

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Practice benchmark only: the California SWRCB Drinking Water Distribution Grade D3 exam carries 100 questions, delivered computer-based through Prometric year-round. This practice exam flags 70% as a PRACTICE BENCHMARK ONLY — a target set by PassProfessor for practice scoring, not a statement of the board’s passing standard; this 100-question draw runs on a 180-minute practice clock. It is a study signal, not an SWRCB result.