Relating to common law public nuisance claims.

HB 3964 creates new restrictions on common law public nuisance claims in Texas. It prevents lawsuits seeking damages for government-authorized activities (like permitted operations), conduct already addressed by existing statutes, or product-related claims (such as defective goods). The bill explicitly states that aggregating private nuisance claims does not create a public nuisance claim. These rules apply only to cases filed after the law's effective date (September 1, 2025, unless passed with a two-thirds vote for immediate effect).