Annual Reports
Order No. R4-2021-0105 (New Regional Permit, adopted July 23, 2021) and R4-2010-0108 (Previous Ventura Countywide Permit, adopted July 8, 2010)
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2025 Annual Report (December 2025)
- Cover Letter
- Permittee Reports
- Camarillo: Annual Report and RWL Compliance Report
- County: Annual Report, RWL Compliance Report, and WMP Progress Report (MCW)
- Fillmore: Annual Report, Certification, and RWL Compliance Report
- Moorpark: Annual Report and RWL Compliance Report
- Ojai: Annual Report and RWL Compliance Report
- Oxnard: Annual Report and RWL Compliance Report
- Port Hueneme: Annual Report
- Santa Paula: Annual Report
- Simi Valley: Annual Report and RWL Compliance Report
- Thousand Oaks: Annual Report, RWL Compliance Report, and WMP Progress Report (MCW)
- Ventura: Annual Report and RWL Compliance Report
- VCWPD: Annual Report and WMP Progress Report (MCW)
- Attachment A – Monitoring Report
- Attachment A (Water quality monitoring data in CEDEN format)
- Attachment B – Countywide PIPP Report
- Attachment B – Countywide PIPP – EcoHero
2024 Annual Report (December 2024)
- Cover Letter
- Permittee Report – Camarillo
- Permittee Report – County
- Permittee Report – Fillmore
- Permittee Report – Moorpark
- Permittee Report – Ojai
- Permittee Report – Oxnard
- Permittee Report – Port Hueneme
- Permittee Report – Santa Paula
- Permittee Report – Simi Valley
- Permittee Report – Thousand Oaks
- Permittee Report – Ventura
- Permittee Report – VCWPD
- Attachment A – Monitoring Report
- Attachment A – Monitoring Appendix A-D
- Attachment A – Monitoring Appendix E
- Attachment A – Monitoring Appendix F-G
- Attachment A – Monitoring Appendix H
- Attachment A – Monitoring Appendix I
- Attachment A – Monitoring Appendix J-L
- Attachment A (Water quality monitoring data in CEDEN format) [Available on request].
- Attachment B – Countywide PIPP Report
- Attachment B – Countywide PIPP – EcoHero
2023 Annual Report (December 2023)
- Cover Letter
- Permittee Report – Camarillo
- Permittee Report – County
- Permittee Report – Fillmore
- Permittee Report – Moorpark
- Permittee Report – Ojai
- Permittee Report – Oxnard
- Permittee Report – Port Hueneme
- Permittee Report – Santa Paula
- Permittee Report – Simi Valley
- Permittee Report – Thousand Oaks
- Permittee Report – Ventura
- Permittee Report – VCWPD
- Attachment A – Monitoring Report
- Attachment A – Monitoring Appendix A-E
- Attachment A – Monitoring Appendix F-H
- Attachment A – Monitoring Appendix I – Part 1
- Attachment A – Monitoring Appendix I – Part 2
- Attachment A – Monitoring Appendix J-L
- Attachment A (Water quality monitoring data in CEDEN format) [Available on request].
- Attachment B – Countywide PIPP Report
- Attachment B – Countywide PIPP – EcoHero
2022 Annual Report (December 2022)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D (Monitoring Appendix A-E)
- Attachment D (Monitoring Appendix F-H)
- Attachment D (Monitoring Appendix I – Part 1)
- Attachment D (Monitoring Appendix I – Part 2)
- Attachment D (Monitoring Appendix J-M)
- Attachment D (Water quality monitoring data in CEDEN format) [Available on request].
- Attachment E (TMDL Reports Part 1)
- Attachment E (TMDL Reports Part 2)
- Attachment E (TMDL Reports Part 3)
- Attachment E (TMDL Reports Part 4)
- Attachment E (TMDL Reports Part 5)
- Attachment E (TMDL Reports Part 6)
- Attachment E (TMDL Reports Part 7)
- Attachment E (TMDL Reports Part 8)
- Attachment E (TMDL Reports Part 9)
- Attachment E (TMDL Reports Part 10)
- Attachment E (Calleguas Creek Watershed TMDLs Year 13 AMR Files) [Available on request due to large file size].
- Attachment F (Permittee Attachments H-I_Camarillo)
- Attachment F (Permittee Attachments H-I_County Unincorporated_revised)
- Attachment F (Permittee Attachments H-I_Fillmore)
- Attachment F (Permittee Attachments H-I_Moorpark)
- Attachment F (Permittee Attachments H-I_Ojai)
- Attachment F (Permittee Attachments H-I_Oxnard)
- Attachment F (Permittee Attachments H-I_Port Hueneme)
- Attachment F (Permittee Attachments H-I_Santa Paula)
- Attachment F (Permittee Attachments H-I_Simi Valley)
- Attachment F (Permittee Attachments H-I_Thousand Oaks)
- Attachment F (Permittee Attachments H-I_Ventura)
- Attachment F (Permittee Attachments H-I_Ventura County Watershed Protection District)
- Cover Letter
- Executive Summary </li
Order No. R4-2010-0108 (Ventura Countywide Permit, adopted July 8, 2010)
Note: Large files may be slow to load.
2021 Annual Report (December 2021)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D (Monitoring Appendix A-E)
- Attachment D (Monitoring Appendix F-G)
- Attachment D (Monitoring Appendix H-L)
- Attachment E (TMDL Reports Part 1)
- Attachment E (TMDL Reports Part 2)
- Attachment E (TMDL Reports Part 3)
- Attachment E (TMDL Reports Part 4)
- Attachment E (TMDL Reports Part 5)
- Attachment E (TMDL Reports Part 6)
- Attachment E (Calleguas Creek Watershed TMDLs Year 12 AMR Files) [Available on request due to large file size].
- Cover Letter
- Executive Summary
2020 Annual Report (December 2020)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D (Monitoring Appendix A-E)
- Attachment D (Monitoring Appendix F-G)
- Attachment D (Monitoring Appendix H-L)
- Attachment E (TMDL Reports Part 1)
- Attachment E (TMDL Reports Part 2)
- Attachment E (TMDL Reports Part 3)
- Attachment E (TMDL Reports Part 4)
- Attachment E (TMDL Reports Part 5)
- Attachment E (TMDL Reports Part 5a)
- Attachment E (TMDL Reports Part 5b)
- Cover Letter
- Executive Summary
2019 Annual Report (December 2019)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D (Monitoring Appendix A-E)
- Attachment D (Monitoring Appendix F-G)
- Attachment D (Monitoring Appendix H-K)
- Attachment E (TMDL Reports Part 1)
- Attachment E (TMDL Reports Part 2)
- Attachment E (TMDL Reports Part 3)
- Cover Letter
- Executive Summary
2018 Annual Report (December 2018)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D (Monitoring Appendix A-E)
- Attachment D (Monitoring Appendix F-G)
- Attachment D (Monitoring Appendix H-L)
- Attachment E (TMDL Reports Part 1)
- Attachment E (TMDL Reports Part 2)
- Attachment E (TMDL Reports Part 3)
- Cover Letter
- Executive Summary
2017 Annual Report (December 2017)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D1 (Monitoring Appendix A-E)
- Attachment D2 (Monitoring Appendix F)
- Attachment D3 (Monitoring Appendix G)
- Attachment D4 (Monitoring Appendix H-L)
- Attachment E1 (TMDL Reports part I)
- Attachment E2 (TMDL Reports part II)
- Cover Letter
- Executive Summary
2016 Annual Report (December 2016)
- Main Report
- Attachments A – C (Inspection Checklists)
- Attachment D1 (Monitoring Appendix A-E)
- Attachment D2 (Monitoring Appendix F)
- Attachment D3 (Monitoring Appendix G-H)
- Attachment D4 (Monitoring Appendix I-K)
- Attachment E1 (TMDL Reports Volume I)
- Attachment E2 (TMDL Reports Volume II)
- Attachment F (MUN Beneficial Use Review)
- Cover Letter
- Executive Summary
Earlier annual reports can be obtained by contacting us.