Williamson County adopts task force recommendations to loosen septic rules, but soil-mapping provision draws concern

Williamson County commissioners voted May 11 to approve and forward a subsurface sewage disposal system task force report containing roughly 60 recommendations aimed at reducing cost and approval time for septic systems. The commission’s action will send the package of proposed regulatory amendments to the county Board of Health for codification.

Mike Madison, who presented the task force’s work, said six changes were already adopted by the Board of Health and highlighted reforms intended to give property owners more flexibility and reduce expense. Those included allowing multiple structures to use an existing septic system, adopting the state’s setback rules in place of stricter county standards, limiting curtain-drain requirements for low-pressure pipe systems to only those sites where a soil scientist identifies a need, and reducing reserve-area requirements. "Cumulatively these recommendations ... result in a lot of cost savings, greater flexibility," Madison said.

The action, recorded as Resolution 52621 and approved unanimously, drew questions from commissioners and members of the public about paragraph 27 of the report, which would limit the kinds of soil mapping required for new systems to private (for‑hire) soil scientists while allowing county staff to continue doing assessments for repairs or modifications under certain conditions. Resident Nel Jones told the commission he feared a two‑track system would increase cost and delay for homeowners; he urged the county to allow staff-conducted mapping to speed permits and lower fees.

Commissioners pressed staff for details about certification and capacity. "From a certification perspective there's no difference between a private soil scientist and the soil scientist that we have on staff," one commissioner said during the discussion, noting the department has trained staff who can evaluate soils but that private mapping historically produces a different product in the form of a detailed soil map. Madison acknowledged differing views existed on the task force and said the provision was one the group flagged for future review as the department’s staffing and leadership evolve.

Other commissioners said the report’s recommendations already adopted by the Board of Health will permit more expansions and rebuilds on existing lots and should reduce costs for many residents. Several members urged close monitoring of implementation and a return visit to the soil‑mapping language once a new director is in place.

Next steps: the commission forwarded the recommendations to the Board of Health and approved a resolution to that effect. The board will consider the proposed amendments in batches, beginning next month, with staff and the task force monitoring implementation and potential follow-up revisions.