Greenville Water Hardness & Quality Report (2026)

Greenville, Mississippi, the Washington County seat — a major northwest Mississippi Delta city (Greenville is the Washington County seat and the largest city in the Mississippi Delta — the cultural and commercial hub of the Delta, one of the poorest and most historically significant regions in the United States; the Mississippi Delta is the birthplace of the Blues — one of the most important American musical traditions, arising from African-American sharecropper culture in the flat cotton-growing Delta plain), home of a significant Delta Blues heritage (Greenville and the surrounding Washington County area is one of the most important historical centers of Delta Blues culture — proximity to Leland, the birthplace of Jim Henson and one of the homes of Delta Blues), a diverse Washington County community with a majority African-American population and significant ties to the Delta's agricultural economy, and a historic river port city on the Mississippi River — draws its municipal water supply from the Mississippi River alluvial aquifer via the City of Greenville Water Division. Water hardness in Greenville measures 103 mg/L — classified as moderately hard.

Greenville's moderate hardness reflects the northwest Mississippi Delta alluvial plain geology. The Mississippi River alluvial aquifer at Greenville–Washington County draws from Quaternary Mississippi River alluvium (calcareous-moderate, derived from mixed carbonate Midwest sources). City of Greenville treatment produces the moderate 103 mg/L.

With hardness at 103 mg/L, Greenville residents encounter moderate scale accumulation. Monthly cleaning is recommended. City of Greenville Water Division consistently delivers water meeting all Mississippi DEQ and EPA Safe Drinking Water Act requirements.