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Manatee County Government Administrative Center Honorable Patricia M. Glass Chambers, First Floor 9:00 a.m. - November 19, 2019
November 19, 2019 - Regular Meeting
Agenda Item #88


Subject
Adoption of the Potable Water System Master Plan

Briefings
None

Contact and/or Presenter Information
Katie Gilmore, Water Division Manager, Utilities Department, Ext. 5473


Action Requested
Adoption of Resolution R-19-150 adopting the 2019 Potable Water System Master Plan Update.

Enabling/Regulating Authority
Manatee County Code of Ordinances Sec 2-31-5(e)(1) requires that the county shall adopt and maintain, by resolution of the board, master plans for the construction and build-out of the potable water treatment plant, potable water distribution system, the wastewater treatment plants, the wastewater collection systems and the reclaimed water distribution system. The master plans shall be updated on a regular basis.

Background Discussion
  • The most recent potable water distribution system master plan was completed internally by the Public Works Department in 2012 and adopted by the board in September 2013. 
  • In 2017, the Utilities Department retained Carollo Engineers, their Engineer of Record, to update the current potable water hydraulic model and update the potable water distribution system master plan.  The master plan is a planning level guiding document for how the potable water service area of the County will be developed based on population projections, planned developments, and land use information provided by the County. 
  • The primary objective of the water distribution system evaluation is to verify that the existing infrastructure satisfies the performance criteria and to identify necessary corrective actions as well as plan for system improvements needed in the future. After updating and calibrating the hydraulic model, system performance was evaluated under current (2018) conditions using hydraulic performance criteria and water quality indicators (i.e. fire flow, minimum system pressure, maximum water age).  An evaluation of the future water distribution system using the calibrated model was then completed to assess the performance of the existing distribution system under increased demands and to determine necessary improvements to be programmed into the Capital Improvements Plan (CIP).  Future demand scenarios included the years 2025 and 2035, as well as system buildout. 
  • The master plan also compared existing water treatment plant (WTP) and storage capacities with regulatory requirements and anticipated water demand projections to identify necessary timing for future water supplies and additional WTP and storage capacity. 
  • A desktop asset management assessment for potable water pipelines 4 inches and greater was also performed.  The analysis identified the pipelines requiring rehabilitation or replacement (R&R) based on condition, remaining useful life estimates, vulnerability, and risk.  These R&R projects are included in the CIP recommendations.
  • The final report was delivered to the County in July 2019 and includes the results of the modeling effort along with detailed CIP recommendations.
  • Staff will present a summary of the Potable Water System Master Plan Update report.


County Attorney Review
Not Reviewed (No apparent legal issues)

Explanation of Other


Reviewing Attorney
N/A

Instructions to Board Records
Provide Katie Gilmore, Water Division Manager, Utilities Department, with a signed, executed copy of Resolution R-19-150 adopting the potable water system master plan.

Cost and Funds Source Account Number and Name
$0

Amount and Frequency of Recurring Costs
None


Attachment:  Resolution 19-150.pdf
Attachment:  Potable Water System Master Plan Final.pdf
Attachment:  Potable Water System Master Plan Executive Summary.pdf