Kansas SB 400 would require data centers to use closed-loop cooling systems (no water evaporation) and authorize municipalities, local district attorneys, and the state attorney general to sue for injunctions against violators. Introduced as part of the 2026 wave of state-level data center water/energy regulation legislation. Kansas is shifting focus from incentives (SB 98 passed in 2025 created a hyperscale sales tax exemption) to environmental regulation. The Kansas City Council changed zoning in January 2026 to make data centers harder to build, signaling local-level pushback complementing state legislation. VERIFIED 2026-05-26: SB 400 (closed-loop cooling / AG enforcement) died in committee when Kansas adjourned sine die April 11, 2026.