2020 Urban Water Management Plan

• TCWD 2020 UWMP FINAL-2021.06.28
• Errata Sheet for Minor Corrections to TCWD 2020 UWMP-2022.05.06 - NEW
• TCWD 2020 WSCP FINAL-2021.06.28
• Appendix K - Reduced Delta Reliance Addendum to 2015 UWMP-2021.06.28

The Urban Water Management Plan (WMP) is a long-term planning document required by the State of California to be prepared by water suppliers every five years with the 2020 submittal due July 1, 2021. For this latest update to the UWMP, Trabuco Canyon Water District (District) will involve four separate actions:

1. Adopt the 2020 UWMP by Resolution
2. Adopt an Addendum to the 2015 UWMP by Resolution
3. Adopt a Water Shortage Contingency Plan by Resolution
4. Update the District’s Water Conservation Ordinance (this will be adopted separately from the first three actions, in July or August 2021)

The purpose of the Addendum to TCWD’s 2015 UWMP is to demonstrate consistency with the Delta Plan Policy WR P1 to “Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance”. Adoption of the Addendum is being encouraged by the California Department of Water Resources and Delta Stewardship Council pursuant to Sacramento-San Joaquin Delta Reform Act, the Delta Plan, and Water Code Section 85021, which declares that the State’s policy is to “reduce reliance on the Delta in meeting California’s future water needs through a statewide strategy of investing in imported regional supplies, conservation, and water use efficiency.” 

The Water Shortage Contingency Plan (WSCP) has been a required component within the UWMP for decades but pursuant to recently adopted legislation AB 1668 and SB 606, commonly referred to as “Making Water Conservation a California Way of Life”, the WSCP is required to be a stand-alone document created separately but that can also be reference in the UWMP. 

The purpose of the WSCP document is to serve as a roadmap for suppliers to follow when water shortages occur due to natural disasters such as drought or earthquakes, system failures, or regulatory actions. Unlike the UWMP, the WSCP is a short-term planning tool to be revisited annually to account for changing conditions. Historically, Trabuco Canyon Water District (TCWD) used its Conservation Ordinance as the water shortage planning document. To comply with the new requirements, the District will now adopt the WSCP and revise its Conservation Ordinance to be consistent with, and provide the means to enforce, the actions within the WSCP. 

The WSCP applies to potable or domestic water and recycled or non-domestic water as determined by the District in the event of shortage or emergency. Uniform application of the requirements is not required. For example, in the event of a drought impacting domestic water, the District will likely not implement the contingencies on recycled water use. One significant change to note in the WSCP is the District revising the number of water shortage stages from four (4) in the existing ordinance to six (6) in the WSCP. The State has established six (6) stages of water shortage that progressively escalate in ten percent increments (10, 20, 30, 40, 50, and >50% supply shortages). The District’s proposed increase to six water shortage states is to align with the State’s requirement while establishing regional consistency and messaging with Metropolitan Water District and Municipal Water District of Orange County. 

The WSCP also establishes locally appropriate “shortage response actions” for each shortage level, with a corresponding estimate of the extent the action will address the gap between supplies and demands. The District’s response actions comply with the State’s requirements that mandate water suppliers demonstrate categories of response actions, along with their estimated savings potential, that either reduce demand, augment supplies, demonstrate operational changes, or invoke additional mandatory prohibitions on specific water uses. The District’s actions are summarized in the attached response matrix which provides an overview of the proposed strategic approach on how the District can mitigate a given water supply shortage condition. 

Consistent with the adoption notification process, the District published a Notice of Public Hearing in the Orange County Register once a week for two consecutive weeks no less than five days apart on June 1^st and 8^th .

2015 Urban Water Management Plan

• TCWD 2015 Urban Water Management Plan (UWMP) FINAL VERSION 
• Errata Sheet for Minor Corrections Trabuco Canyon_2018-08-09 Highlights - NEW
• Errata Sheet for Minor Corrections Trabuco Canyon_2018-08-09_Final - NEW
• Notice of Public Hearing for UWMP - June 15, 2016

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