SB 880, effective July 1, 2025, requires Tennessee environmental agencies to base new regulations on "best available science" for drinking water, air quality, hazardous substances, and waste handling. It prohibits agencies from adopting stricter rules than federal standards (or new rules without federal equivalents) unless the science is reliable, unbiased, peer-reviewed, and demonstrates a causal link between exposure and human health harm. The law applies only to new regulatory actions after July 2025, not existing rules or federal compliance requirements. It directly affects agencies like the Tennessee Department of Environment and Conservation when creating new environmental standards.
SB 113 amends Tennessee law to give the state Department of Environment and Conservation commissioner authority to issue variances (exceptions) for subsurface sewage disposal systems, overriding stricter local requirements in certain cases. It directly affects county health departments implementing these systems and property owners needing sewage solutions. The key provision allows the commissioner to grant variances that supersede local rules, while requiring these variances to be recorded with the county register of deeds. This change streamlines state oversight for sewage systems without requiring local approval.
SB 258 clarifies that facilities installing only water softening devices (for hard water) do not become public water systems under Tennessee law, even if the device causes them to meet the definition. It specifically excludes such softening systems from public water system requirements, meaning these facilities are not required to monitor water quality unless they otherwise qualify as a public water system. If a softening system causes a facility to meet the public water system definition, it must monitor hardness, alkalinity, pH quarterly and sodium annually, reporting results to the Department of Environment and Conservation within 15 days of each quarter. The bill amends Tennessee Code Annotated Title 68 and takes effect July 1, 2025.
SB 1277 revises Tennessee’s state natural areas program by adjusting acreage measurements for existing protected lands and designating four new natural areas for conservation. The bill specifically adds Clifty Creek Gorge (89 acres in Morgan County, protecting the Virginia spirea), Rocky Hill (1 acre in Rutherford County, safeguarding endangered plants), Union Grove (59 acres in Hamblen County, preserving the Tennessee trillium), and Versailles Knob (40 acres in Rutherford County, protecting Braun’s Rockcress). It also updates acreage figures for multiple existing sites, such as expanding Barnett’s Woods to 156 acres and Emory River to 2,754 acres. These changes directly affect the state’s conservation efforts by formally protecting specific ecosystems and endangered species under Tennessee’s natural areas framework.
SB 884 clarifies that local governments (like cities or counties) must accept 19 specific energy sources - including solar, wind, nuclear, natural gas, and biomass - as "clean or green energy" when setting requirements for public utilities. It requires these local rules to include all 19 sources as permissible, regardless of whether the government labels the rules as targeting "clean" or "renewable" energy. The bill amends Tennessee law to define "energy project" and "public utility" consistently across multiple code sections. This change ensures utilities comply with local energy rules by using any of the listed sources, without requiring local governments to explicitly classify their requirements as "clean energy" or "renewable energy."
HB 126 revises Tennessee's state natural areas by updating acreage descriptions for existing protected lands and designating four new natural areas. It increases protected acreage for sites like Barnett's Woods (from 40 to 156 acres) and adds new areas including Clifty Creek Gorge (89 acres protecting the federally threatened Virginia spirea), Rocky Hill (1 acre safeguarding the endangered running glade clover), Union Grove (59 acres preserving the Tennessee trillium), and Versailles Knob (40 acres protecting Braun's Rockcress). The bill directly affects conservation efforts by expanding legal protections for specific endangered species and habitats across Morgan, Rutherford, and Hamblen counties. Enacted on April 11, 2025, it formalizes these land designations without introducing new funding or regulatory requirements.
HB 1143 clarifies that local governments (counties, cities) cannot restrict public utilities from using certain energy sources when creating regulations about clean or renewable energy. It requires all local energy requirements to include 19 specific sources as permissible, including solar, wind, nuclear power, natural gas, and biomass - regardless of how the local rule is worded. This directly affects municipal and county regulations governing utility energy sources and ensures utilities can comply by using any of the listed options. The bill amends multiple Tennessee code sections to define "clean or green energy" broadly and makes local rules that exclude these sources legally invalid.
HB 801 removes a specific energy efficiency requirement for low-sloped roofs in Tennessee. It amends state law to clarify that the International Energy Conservation Code's roof solar reflectance and thermal emittance rules no longer apply to such roofs starting July 1, 2025. This change directly affects builders, developers, and homeowners constructing or renovating low-sloped roofs across Tennessee. The bill achieves this by adding a new provision to Tennessee Code Title 68, Chapter 120, eliminating the requirement without creating new rules. The law became effective April 3, 2025, with the policy change taking effect on July 1, 2025.
SB 527 exempts pesticide manufacturers and sellers from civil lawsuits related to labeling, provided the pesticide was registered with both Tennessee's commissioner of agriculture and the EPA under federal law (FIFRA) and bore an EPA-approved label at the time of sale. The bill specifically removes liability for product safety claims tied to labeling, as long as the pesticide met all federal and state registration requirements. It does not apply if the pesticide was manufactured or sold in violation of Tennessee law or FIFRA. This change directly affects pesticide companies and could influence how product liability cases are handled in Tennessee courts.
SB 281 exempts small-scale farming activities on properties under three acres with greenbelt classification from regulation by Tennessee's Department of Environment and Conservation. Specifically, it prohibits oversight of topsoil handling, rock removal, or pond construction on such properties. This exemption applies only to land classified as agricultural under Tennessee's 1976 greenbelt program (TCA Title 67). The bill takes effect July 1, 2025, and amends multiple environmental and agricultural code sections to implement this change.
