Meetings are held on the 1st & 3rd Wednesday of each month at 4:00 pm, unless otherwise posted. Visit our Meetings, Agendas & Minutes page for more info.


The new policy provides priorities for supply of available recycled water and addresses cost-sharing for future projects.
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Did you know that the Napa River is one of the largest Central Coast Range Rivers in California?
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The Napa Sanitation District completed a Wastewater Treatment Plant Master Plan in April 2011. The Plan determines the capacity of existing facilities, estimates future loads and regulation impacts, and develops a recommended plan for upgrading existing facilities. To view sections of the report, click on the links below.

Wastewater Treatment Plant Master Plan:

Table of Contents, Abstract, and Frequently Asked Questions

Chapter 1: Introduction

Chapter 2: Basis of Planning

Chapter 3: Existing Facilities and Performance Assessment

Chapter 4: Capacity Analyses

Chapter 5: Alternatives Screening

Chapter 6: Business Case Evaluation of Alternatives

Chapter 7: Description of Recommended Project

Appendix A: References

Appendix B: Abbreviations

Appendix C: NPDES Permit

Appendix D: Title 22 Requirements

Appendix E: Existing Facilities Descriptions and Design Criteria

Appendix F: Performance Assessment

Appendix G: Technical Memoranda

Appendix H: One Page Summaries

General Application PDF

NSD News
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Take a Virtual Tour of our Water Recycling Facility to see our process.

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