Ivins continues sewer master-plan update; staff recommends repair-and-replacement trust

Ivins City Council continued a June 19 work-session discussion on updating the city’s master plan, impact-fee facilities plan and sewer repair-and-replacement (R&R) cost estimates, as consultant Chuck presented a multi-decade life-cycle model using the city’s GIS data.

The model, Chuck said, is based on an inventory that assigned an installation age to every sewer pipe. “52.6% of the system was installed in the nineties,” he said, and he projected replacements and rehabilitations across decades using a 75‑year average life assumption. Using a $100,000,000 system replacement value and conservative financial assumptions — 2.5% inflation and a 5% fund investment return — the model found that setting aside 0.826% of replacement value now would translate to roughly $834,000 per year under those assumptions.

The proposal is conceptual: the model runs in decades for 200 years to show long-term behaviour rather than to precisely predict year‑to‑year budgets. “We never have to save that much money in the future if as long as we…