MES quantified water loss and I&I for the town and delivered a final report with engineering estimates and a prioritized roadmap in 2024; follow-up work continues in 2026.
Town of Oak Creek I&I and water loss analysis
Project
Ranch water system model and fire memo
MES agreed a 1,500 gpm fire flow with the fire chief, modeled the water system in EPANET and updated the fire flow memo with the results.
About the project
The problem
A rural ranch project needed a water system that could carry fire flow as well as everyday demand.
The fire flow had to be agreed with the fire chief. The system then had to be tested in a model and written up in a memo and a report.
The pathway
MES built a base demand spreadsheet and an EPANET model of the water system. It also wrote a fire flow design memo for the fire chief.
MES worked out the fire flow figures with the chief in steps. They settled on 1,500 gpm for sprinklered buildings, under Table B105.1 of the 2009 International Fire Code.
The chief also agreed that total storage could be split between the project's two water systems if they were a short drive apart. That storage still had to cover residential demand and a reserve.
MES updated the model for 8-inch mains and the 1,500 gpm fire flow. It ran the fire case at both 2-hour and 1-hour durations.
In one part of the system, model pressures ran near 120 psi. MES added another pressure reducing valve (PRV) there to hold pressure below 80 psi.
The result
MES updated the fire flow design memo with the modeling results.
The report with exhibits went through review and a QC check before MES finished it. The work ran from July to early September 2025.
- Fire flow
- 1,500 gpm, sprinklered buildings (2009 IFC Table B105.1)
- Water mains
- 8-inch
- Pressure control
- Added PRV to hold pressure below 80 psi
- Model
- EPANET water distribution model
- Span
- July to September 2025
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