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An official website of the State of Louisiana. Here’s how you know Baton Rouge, Louisiana, May 04, 2026 - The Louisiana Department of Health (LDH) has released the 2025 letter grades for community water systems across the state, offering a transparent look at the quality and performance of more than 900 systems serving Louisiana residents. This annual report card, mandated by the Community Drinking Water Accountability Rule (Act 98 of the 2021 Regular Legislative Session), provides residents with clear, accessible information about the systems that deliver their drinking water. The latest report shows continued progress statewide, with fewer water systems receiving failing grades and more systems demonstrating measurable improvements in performance. “The overall improvement we are seeing in water system grades is encouraging and reflects the hard work of our water providers and the impact of strategic investments at both the state and federal levels,” said Tonya Joiner, assistant secretary for the Louisiana Office of Public Health. “We remain committed to building on this progress and ensuring that all Louisianans have access to safe, reliable water.” The water grading system, authorized in 2021, is part of the Safe Drinking Water Program’s broader effort to strengthen accountability among water providers while empowering consumers with clear information about their drinking water. The grades are calculated using a standardized 100-point scale based on seven critical categories: For more information, visit the Bureau of Engineering Services’ Community Drinking Water Accountability webpage.