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Amarillo staff pivots wastewater strategy, narrows cost horizon after condition surveys
Summary
Staff told council they will move from a single 25‑year centralized plant to a phased 10–15‑year approach (rehab plus a smaller new plant), citing TCEQ triggers and a condition assessment; officials said refined cost estimates will follow next month.
City staff presented a substantive update Aug. 26 on Amarillo’s wastewater strategy, saying new assessments and peer visits have prompted a change in direction from a single, centralized 25‑year build to a phased approach that combines rehabilitation of existing plants with a smaller new facility.
Donnie Hooper and Floyd (staff) told council that condition assessments at the River Road and Hollywood Road plants and comparisons with other cities (including Austin’s Walnut Creek project) supported a shorter 10–15‑year planning horizon and a two‑plant model in which rehabilitated infrastructure and modular expansions would meet growth while limiting up‑front cost exposure.
Hooper stressed that the city is in a preliminary phase: the TCEQ 75% rule (three months at 75% of permitted design flow) requires formal engineering and financial planning once triggered, and the 90% threshold requires additional authorizations. Staff said they have initiated a detailed asset database and condition scoring for River Road and that the preliminary engineering report and updated cost estimates are due in the fall; they expect refined cost estimates lower than the earlier $2–3 billion ballpark.
The team emphasized options that reduce ratepayer burden by phasing improvements so that current ratepayers fund near‑term fixes while future customers help pay later expansions. Hooper and Floyd described potential funding mixes, TWDB low‑interest loans, other state/federal sources and guaranteed‑maximum‑price (GMP) contracting approaches to manage risk.
Council asked for clearer capacity metrics (current average flows, permitted MGD, and time to 90% thresholds) and requested the River Road condition summary when available; staff said they will present those data in a follow‑up meeting anticipated in October.
