Mississippi Tap Water Quality
Check a Mississippi ZIP Code
Overview
Jackson's 2022 collapse, when flooding knocked out the O.B. Curtis plant and left the capital without safe water for weeks, made Mississippi the national emblem of water-infrastructure failure. A federal receiver now runs JXN Water, and service has stabilized with major EPA funding, though rebuilding continues.
Most of the rest of the state drinks groundwater from prolific aquifers, and typical quality is decent where systems are maintained. The state has many small, thinly funded rural systems with recurring boil-water notices, and private wells in the Delta go largely untested.
Common Contaminants in Mississippi
Pressure losses and line breaks in distressed systems (Jackson historically, small rural systems today) trigger frequent precautionary boil-water notices
A recurring exceedance in small surface-water systems
Some aquifer water is aggressive toward plumbing, raising lead/copper leaching risk where corrosion control lapses, a factor in Jackson's earlier lead exceedances
Violations & Compliance
Mississippi consistently ranks near the top for boil-water advisories and small-system violations per capita. Jackson operates under federal oversight with roughly $800 million in committed rebuild funds; its water currently meets standards, while trust rebuilds more slowly.
Water Hardness in Mississippi
Soft, typically 20–90 mg/L. Deep sand aquifers deliver naturally soft water across most of Mississippi, including Jackson's supply.
Hardness affects taste, limescale, and soap — not safety. Compare levels across all cities or read the water hardness guide.
City Reports for Mississippi
We haven't published individual city water reports for Mississippi yet. Use the ZIP lookup for a statewide assessment, and check your utility's annual Consumer Confidence Report for local detail.
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •US EPA Safe Drinking Water Act regulations
- •EWG Tap Water Database
- •The utility's most recent Consumer Confidence Report (CCR)
- •WHO Guidelines for Drinking-water Quality