TheSouthern Hills aquifer system is the primary source of public water in the northern ten parishes of southeasternLouisiana. The aquifer dips towards theGulf of Mexico and extends from the northern limit of the recharge region nearVicksburg, Mississippi, and as far south as theBaton Rouge area in south Louisiana. There are about thirteen aquifer units composing the system in the southern part of the area. The water is primarily a soft,sodium bicarbonate type with a dissolved-solids concentration of about 220 milligrams per liter in southern Louisiana.^[1]

Groundwater use in 1980 for public supply averaged 121 million gallons per day, serving over 700,000 people in southern Louisiana. In southwestern Mississippi, where the aquifer system is also a major source of water, utilization for these categories in 1980 totaled million gallons per day, serving about 270,000 people.^[2]

• Southern Hills Aquifer System Updates
• Chicot Equivalent (Southern Hills) Aquifer Sub-Unit Survey
• Where does Baton Rouge get its drinking water?

• Aquifers in the United States
• Geology of Louisiana
• Water in Louisiana