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Gilbert staff brief council on utility condition assessments, wastewater investments and proposed rate timing changes
Summary
Staff presented a range of water and wastewater updates: targeted condition assessments discovered pipeline damage (third-party responsibility identified), wastewater and reclaimed-water capital work is underway, and staff proposed shifting rate effective dates and studying a water-resources-recovery fee for homes not on sewer.
At the retreat, utilities staff outlined recent condition-assessment work that has let the town repair prioritized water transmission and sewer assets before emergency failures. Staff described a Western Power Line Trail inspection that revealed corrosion on a 30-inch steel transmission line where a fiber conduit damaged the pipe; the third party already agreed to pay repair costs, staff said, and the town avoided an emergency outage.
Water fund managers emphasized the use of targeted inspections and new technology to find anomalies earlier: the vendor performs on-site analysis during shutdowns so repairs can be scheduled and completed more cheaply than in emergency conditions. Staff also increased the water-fund contingency to $4 million to help cover unforeseen repairs while a backlog of deferred projects (about $152 million across multiple years) remains.
On wastewater, staff recapped the April 2025 adoption of a 95% wastewater-rate correction (to stabilize the fund after long-term underfunding) and summarized capital work: gravity sewer rehabilitation (1,700 linear feet, $2.6M), a scaling-up of manhole rehabilitation (19 in FY25 to 50 in FY26), force-main rehabilitation phases, reclaimed-water pump replacements and upgrades to the Neely plant. Staff reported a sizeable amount of projects were reprioritized or phased (~$76M) so the five-year sewer plan fits current revenue expectations.
Staff also updated the council on the water-resources-recovery fee concept for customers on septic systems who consume water but do not return wastewater to the town system. The idea would charge a fee because those customers draw on water supplies the town must replace; staff emphasized technical and legal constraints (state groundwater-recharge credits and annexation rules for county properties) and said a detailed plan would return in the fall.
Finally, utilities recommended exploring adoption/effective-date timing changes (delay rate changes until after the summer consumption peak or consolidate rate actions every other year) to lessen the perceived financial impact on residents and to smooth revenue timing. Council asked about interjurisdictional data sharing, equity for county parcels, and communications for residents who may face past due balances tied to a water-meter audit.
What's next: staff will return with more detail on the recovery-fee options, timing alternatives for rate adoption and outreach plans for residents affected by the meter audit and any billing reconciliations.
