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Council hears South Sanitary Sewer Master Plan; staff to return with adoption and impact-fee work
Summary
A consultant presented a South Sanitary Sewer Master Plan that maps a new service area, recommends near-term lift stations and force mains (including building 15-inch and 18-inch mains together), and proposes designing for 3 MGD capacity while pursuing a future permit to 6 MGD; staff said funding will mix developer contributions, impact fees and user fees.
The Cibolo City Council received a detailed presentation of a South Sanitary Sewer Master Plan that would expand the city’s sewer service area, lay out a multi-decade capital improvement program and set near-term priorities for construction and permitting.
"Tonight, we're here to talk about the South Sanitary Sewer Master Plan," Miss Vassar said as she opened the presentation, which staff said defines North and South service areas, ties growth projections to the city's comprehensive plan and moves short-term projects into a five-year constructability evaluation.
Why it matters: The master plan ranks and sizes projects so the city and developers know what infrastructure is needed to support anticipated growth. That affects development timelines, who pays for new mains and lift stations, and whether the city must expand downstream treatment capacity.
What staff presented: The plan shows a CCN transfer area brought into the city's wastewater CCN and identifies the CCMA South Wastewater Treatment Plant as the primary destination for South-area flow. Staff recommended designing the plant expansion to a 3 million gallons-per-day (MGD) capacity and pursuing a permit to increase the plant to 6 MGD in the future (TCEQ approval pending). The proposal separates projects by timing (short term = red, 10 years = blue, 25 years/buildout = green) and highlights critical early work such as the Bolton Road Lift Station and associated trunk lines.
On constructability, staff said they walked potential routes and evaluated property crossings, alignment inflection points and other constraints. The team recommended constructing both a 15-inch and an 18-inch force main at the same time along the same alignment to reduce long-term cost and avoid repeated crossings of sensitive locations such as Cibolo Creek; initially the 15-inch would carry flow and the 18-inch would be held in reserve until growth required its use.
Budget and funding: A slide noted $47,000,000 in infrastructure across the plan’s projects; Mister Reed clarified that figure represents development-driven need and does not mean the city will incur that full debt immediately. "These are development driven," Reed said, and staff said the funding mix is expected to include developer contributions, new impact fees for the South area once established, and customer user fees.
Next steps: Staff will return with a final master plan and said the council can expect the item for adoption at the council’s Nov. 18 or the December meeting. The impact-fee study that will inform recommended cost allocations and fee schedules is ongoing and will be presented to council in the coming weeks.
No formal action or vote on the master plan occurred at this meeting; council members asked clarifying questions about project numbering, sequencing and timing during the presentation.
