Wastewater treatment and rural water associations; bring forward provisions related to.

Added comprehensive definitions for key terms including 'advanced treatment system', 'certified installer', 'certified professional evaluator', 'cluster system', 'performance-based system', and 'qualified homeowner maintenance provider' to clarify regulatory requirements.

Established new requirements for performance-based systems that must be designed and certified by licensed professional engineers and authorized by the department before installation.

Updated enforcement provisions to include administrative fines up to $10,000 for violations and clarified procedures for appeals and civil penalties.

Created a new Mississippi Municipality and County Water Infrastructure Grant Program to provide federal ARPA funding for water, wastewater, and stormwater infrastructure projects with matching requirements.

Added a new Wastewater Advisory Board to advise the Department of Health on wastewater disposal system regulations and improvements.

Updated various deadlines and timeframes for department responses, system approvals, and grant program availability through December 31, 2026.

Established eligibility criteria for grant recipients including requirements for operator membership in Mississippi 811, Inc. and certification of compliance with federal guidelines.

Expanded critical infrastructure facility definitions to include data centers, commercial airports, and other modern infrastructure not previously covered.