Manteca City Council
December 5, 2023

Final Draft Water
Master Plan Review
ATTACHMENT 1
Why Now?
Water Master Plans typically updated every 5 years
Last Updated in 2005
2021 HydroScience
Evaluate long term reliability of City’s water supply
Build & Calibrate hydraulic model
Evaluate system under normal and peak flow
Identify areas of concern in the existing system
Develop a CIP program to address current and future needs ATTACHMENT 1
Historical Water Supply
• 2014 SGMA
• ESJ Subbasin
critically Overdrafted
• 16 GSA
• GSP (15 projects)
• DWR approved 2023
• Safe Yield 1 af/ac-yr
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Current System
• Water Gems
- Meter data from 2016-2021
- GIS data
- Field flow&pressure testing
- SCADA data
- General Plan Land Use
• 17 Well (15 active/ 2 standby)
• 3 Reservoirs (5.8 MG)
• New Well 30
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Future Needs
• 2021 – ADD 13,507 AFY
• 2030 – ADD 20,242 AFY +3 Wells
• 2045 – ADD 28,872 AFY +3 Wells
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Pipe Age
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Funding Needs
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THANK YOU!
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