Environmental Commission recommends denying water/wastewater service extension for proposed 300‑unit multifamily project at N. FM 620

The Environmental Commission voted May 7 to recommend denial of a water and wastewater service extension request (SER) for a proposed 300‑unit multifamily development at 10656 North FM 620. Staff recommended denial because the site is outside the City of Austin's full-purpose jurisdiction (it legally removed itself from the ETJ in September 2024), lies in the Lake Travis watershed within the North Edwards Aquifer recharge zone and drains toward known Jollyville Plateau salamander habitat upstream from Austin.

Kayla Champlin, environmental program coordinator with Watershed Protection, explained why the commission is being asked to weigh in: by code the commission must recommend on SERs located in the drinking-water protection zone and outside full-purpose jurisdiction. Champlin summarized the applicant's proposal: a 10-acre site, conceptually developed for 300 multifamily units (about 150 living-unit equivalents) with approximately 59% impervious cover and roughly 34% of the site used for parking. The applicant proposed two water-extension alignments (approximately 950 feet of 12-inch main from the south or a 1,400-foot alternative crossing FM 620) and roughly 1,300 feet of 8-inch gravity wastewater main plus upgrades to the Volantate lift station and replacement of some downstream mains.

Chamlpin said alternatives to city-served wastewater are limited on this site because soils and shallow bedrock constrain on-site sewage systems. A Texas Land Application Permit (TLAP) irrigation field would require roughly 9.3 to 10.1 acres for irrigation and storage pond and would therefore force a dramatic reduction in developable density; on-site sewage systems (OSSFs) would likewise support only about 10-13 LUEs under Travis County rules given the soil and density constraints. Direct discharge permits are not an option because state rules prohibit discharges within 10 miles of Lake Travis.

Champlin also noted that Senate Bill 2038 (state law referenced in the transcript) enables lot-by-lot removal from the extraterritorial jurisdiction, a statutory change that has led to many acres released from Austin's planning jurisdiction; she and other staff cautioned that removal from the ETJ limits Austin's ability to require city water-quality standards, impervious-cover limits (20% net site area under the Watershed Protection Ordinance) or a 40% downstream natural-area preservation requirement that would otherwise apply.

Public speakers from conservation groups urged denial and recommended that the applicant either seek annexation and comply with city environmental standards or significantly reduce impervious cover and protect downstream habitat. The applicant's representative, Richard Settle, said the project sponsor contracted to buy the property after it had already been removed from the ETJ and argued the site has limited alternate pathways to deliver deeply affordable housing; he said the developer would fund the extension work if the city allowed the connection.

After deliberation the commission voted to recommend denial, citing the property's status outside full-purpose jurisdiction, its location in the North Edwards recharge zone upstream of sensitive salamander habitat, proposed impervious cover far above the 20% limit that would apply under city jurisdiction, and site constraints that make non-city wastewater options infeasible without dramatically lowering density. The vote was recorded as a recommendation to deny the SER; the item will proceed to the Water and Wastewater Commission and then to City Council for final action.

Ending: Staff said they will forward the commission's recommendation and associated findings to subsequent bodies in the SER process; the applicant may pursue annexation or redesign as alternative paths forward.