Management & Planning

The goal of the District’s management team is to be forward-thinking – to anticipate the wastewater treatment needs of the community and to have the infrastructure and processes in place at the right time to ensure that we can meet those needs.

Additionally, the District strives to keep costs down and to increase resource efficiency by reducing energy use and increasing the production and distribution of recycled water.

In order to meet these goals, the District has prepared strategic plans for key functional areas. These plans help identify priorities, needed improvements, project alternatives and potential timelines. In short, these documents provide a road map forward to allow the District to be successful in providing excellent wastewater collection, treatment and disposal service.

District Strategic Plan

The purpose of the Strategic Plan is to describe the goals, objectives and priorities of the Napa Sanitation District. The Strategic Plan was developed through a series of discussions involving the NSD Board of Directors and NSD Department heads. The current version of the plan was completed in May 2015. 

Performance Measurement Reports

After the end of each calendar year, the District prepares a Performance Measurement Report. The report includes performance measures that, when taken as a whole, provide a snapshot of how well the District is performing and being managed. This report highlights areas where the District is performing well, but just as importantly, it also identifies areas that need improvement. This information can feed into work plans for the coming year.

The District uses the Effective Utility Management  (EUM) framework for presenting this information. This framework is specific to water and wastewater utilities and provides for the possibility of comparing the District to other wastewater utilities once more providers begin using EUM for measuring and reporting on performance.

Wastewater Treatment Plant Master Plan

The Napa Sanitation District completed a Wastewater Treatment Plant  (WWTP) 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.

Download complete WWTP Master Plan

WWTP Master Plan Chapters:

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 

Strategic Plan for Recycled Water Use

The District completed the Strategic Plan for Recycled Water Use to determine a recycled water planning approach through the year 2020. The plan considers seven strategies, ranging from recycling only enough water to meet NPDES permit requirements, to recycling all water available. In examining all the strategies, the District considered treatment, storage and distribution system requirements as well as capital and operation and maintenance costs. The District also wanted to factor in the cost to sewer customers and the responsibility to augment local water supplies. The plan evaluates all the recycled water strategies and makes recommendations.

Communications Plan

In 2016, Napa Sanitation District completed a long-range strategic communications plan to prioritize communication strategies, identify important messages to convey to the community, and identify the best outreach methods to convey these messages to the community.  The Communications Plan can be found here

Collection System Master Plan

In 2007, Napa Sanitation District completed a Collection System Master Plan. The collection system is the network of sewer pipes that collect wastewater and carry it to the treatment plant. This plan evaluates the condition and performance of the sewer pipe collection system under both current and future (year 2030) buildout conditions. The Master Plan concluded that while the collection system has adequate dry weather capacity to handle anticipated growth, it has inadequate capacity for existing wet-weather peak flows due to excessive inflow and infiltration (I/I) entering the system. I/I occurs where there are breaks in the sewer main and lateral pipes that allow rainwater or groundwater to enter the sewer pipe system.
The Master Plan concludes that the most cost-effective solution is a mixture of I/I reduction projects and capacity upgrades to handle peak flows, as opposed to wholesale capacity upgrades to the system. Based on this recommendation, the District has initiated pilot projects to determine the sources of and best approaches for reducing I/I to the collection system. For more information on the Collection System Master Plan, call the District at 258-6000.

Capital Improvement Program

The District’s Capital Improvement Program, or CIP, is a ten-year plan that identifies capital projects and equipment purchases, provides a planning schedule and identifies options for financing the plan. Essentially, the plan provides a link between the District’s strategic plans and its capital budget. This plan is incorporated into the Annual Budget.

Energy Alternatives Study Project Implementation Plan

In 2010, the District completed an Energy Alternatives Study to evaluate wind, solar, and cogeneration power generation requirements. The study determined that wind generation was not feasible because of inadequate wind speeds at District sites. The study also found that photoelectric (solar) generation is not viable at this time for full scale production, due to costs.

The study's top recommendation was the immediate installation of a fat, oils and grease (FOG) receiving station. The breakdown of FOG in the treatment plant's digester creates large amounts of methane gas that can be used to fuel generators (known as cogeneration) at the wastewater treatment plant. This power generation reduces demand for purchased electricity at the plant. The District completed construction of the FOG receiving station in July, 2012.

Winery Waste Management Technical Memorandum

In 2008, Napa Sanitation District determined that there were a number of wineries or winery-related businesses operating within its service area that are not regulated by the District. These businesses potentially have on-site activities that are incompatible with NSD’s Industrial Pretreatment Program requirements, and/or are discharging wastewater in excess of purchased capacity for the property.

To address these issues, the District implemented a study to analyze various strategies for addressing winery waste within the District’s service area. The Winery Waste Management Technical Memorandum, completed in October 2009, recommended managing these discharges through the existing NSD Industrial User permitting program as the most feasible of several options.