Due to the age, condition, and performance of the Acton Municipal Utility District (AMUD) Wastewater Treatment Plant (WWTP) No. 1, the District hired eHT to assist in the implementation of a major improvement project to upgrade or replace significantly deteriorated components, including the incorporation of a new secondary treatment process via a true batch Sequencing Batch Reactor (SBR). Due to increased population growth in the service area contributing to the District’s collection system, coupled with inflow and infiltration (I/I) generated by major storm events, produced significant fluctuations in the influent flowrates to the WWTP. The current plant and aged condition of equipment continued to result in the discharge of effluent that was sometimes non-compliant. The upgrades to the WWTP were intended to improve the consistency of plant performance, efficiency of overall plant performance, and the effluent quality for discharge into McCarty Branch, adjacent to the WWTP. The project will enable the WWTP to consistently comply with its TPDES permit limits and prepare for the potential of having a new total phosphorus limit in the future while handling the established design flows. It will also enable the WWTP to consistently comply with Type II 210 non-potable reuse requirements while handling the established design flows. eHT prepared the WWTP to function throughout a 25-year planning horizon (through the year 2041) by rehabilitating and/or replacing WWTP components as necessary. The project utilized funding from the Texas Water Development Board (TWDB) Clean Water State Revolving Fund (CWSRF).