Chapter 1 - Water Quality Control Plans, Policies, and Guidelines
- Article 1 - North Coast Region (§§ 3900 — 3909.6)
- Article 2 - San Francisco Bay Region (§§ 3910 — 3919.22)
- Article 3 - Central Coast Region (§§ 3920 — 3929.21)
- Article 4 - Los Angeles Region (§§ 3930 — 3939.61)
- Article 5 - Central Valley Region (§§ 3940 — 3949.17)
- Article 6 - Lahontan Region (§§ 3950 — 3959.11)
- Article 7 - Colorado River Basin Region (§§ 3960 — 3969.6)
- Article 8 - Santa Ana Region (§§ 3970 — 3979.16)
- Article 9 - San Diego Region (§§ 3980 — 3991.1)