Mississippi water quality
Mississippi has 1,118 active public water systems (3,160 on file total), 947 of them graded by TapGraded.
Grade distribution
Biggest water systems
CITY OF JACKSON
JACKSON, MS · 189,673 served
CITY OF GULFPORT
GULFPORT, MS · 75,056 served
CITY OF SOUTHAVEN
SOUTHAVEN, MS · 56,000 served
CITY OF OLIVE BRANCH
OLIVE BRANCH, MS · 54,025 served
CITY OF HATTIESBURG
HATTIESBURG, MS · 43,449 served
CITY OF TUPELO
TUPELO, MS · 37,000 served
CITY OF MERIDIAN
MERIDIAN, MS · 34,466 served
CITY OF STARKVILLE
STARKVILLE, MS · 32,027 served
CITY OF BRANDON
BRANDON, MS · 31,852 served
CITY OF FLOWOOD
FLOWOOD, MS · 31,574 served
Lowest-graded systems
Active, graded systems serving at least 10,000 people, ordered by lowest Tap Grade first.
CITY OF JACKSON
JACKSON, MS · 189,673 served
CLARKSDALE PUBLIC UTILITIES
CLARKSDALE, MS · 14,903 served
CITY OF JACKSON-MADDOX RD.
JACKSON, MS · 28,098 served
CITY OF OXFORD
OXFORD, MS · 28,500 served
CITY OF HATTIESBURG
HATTIESBURG, MS · 43,449 served
CITY OF MOSS POINT
MOSS POINT, MS · 12,524 served
UNIVERSITY OF MISSISSIPPI
OXFORD, MS · 26,874 served
CITY OF CORINTH
GLEN, MS · 15,000 served
CITY OF CANTON
CANTON, MS · 16,785 served
CITY OF HERNANDO
HERNANDO, MS · 14,457 served
Cities in Mississippi
Source: EPA SDWIS/ECHO · Data as of 2026Q2