Florida Water Report
Get a free water test

Water in Seminole County, Florida

38 water systems508,899 residents served72 monitoring wells

Seminole County is served by 38 community water systems, together delivering tap water to roughly 508,899 residents, each measured against federal legal limits from public EPA and Florida records.

Utilities in Seminole County

UtilityPeople servedStatus
Sanford, City ofSanford79,715All under limitsSeminole County SoutheastWinter Pk/Casselbery70,040All under limitsCasselberry, City ofCasselberry54,747All under limitsAltamonte Springs Water DeptAltamonte Springs51,000All under limitsOviedo, City ofOviedo47,933All under limitsSanlandoLongwood36,953All under limitsWinter Springs, City ofWinter Springs34,657All under limitsSeminole County NorthwestSanford31,986All under limitsLongwood, City ofLongwood23,237All under limitsSeminole County NortheastLake Mary19,925All under limitsLake Mary, City ofLake Mary17,066All under limitsSeminole County SouthwestApopka9,622All under limitsWeathersfieldAltamonte Springs4,221All under limitsChase GrovesWinter Park4,052All under limitsChuluota Water SystemChuluota3,863All under limitsApple ValleyAltamonte Springs3,269All under limitsRavenna ParkSanford2,105All under limitsMeredith ManorWinter Park1,748All under limitsMidway-Canaan Water AssociationSanford1,500All under limitsPalm Valley Mobile Home ParkOviedo1,476All under limitsSunshadow ApartmentsCasselberry986All under limitsMullett Lake Water AssociationGeneva9761 over limitJansen S/DApopka8681 over limitDruid HillsAltamonte Springs821All under limitsOakland ShoresAltamonte Springs7881 over limitBlack Hammock -MsbuWinter Park781All under limitsSeminole WoodsGeneva780All under limitsBear Lake ManorApopka777All under limitsLake Harney Water AssociationGeneva7003 over limitOviedo MarketplaceOviedo689All under limitsTwelve Oaks R.v.resortSanford5001 over limitPark RidgeSanford2461 over limitLittle Wekiva EstatesAltamonte Springs214All under limitsLake BrantleyWinter Park192All under limitsHarmony HomesAltamonte Springs1581 over limitLake Mary MHPLongwood1502 over limitDoveraOviedo96All under limitsElder Springs Mobile Home ParkSanford62All under limits

Contaminants detected in the county

Tap any contaminant for health info, limits, and the highest reading in the county.

Contaminant# of utilitiesPeople served

Above the legal limit

Contaminant# of utilitiesPeople served

Schedule a Free In-Home Water Test

Get Started

Data Sources

EPA SDWISPublic water system identity, population and county for Seminole Countyret. 2026
FDEPChemical monitoring results feeding each utility reportret. 2026
USGS WQPGroundwater chemistry from Seminole County monitoring wellsret. 2026

Informational, from public EPA, Florida and USGS records. Utility figures describe the water each system delivers, not what your own plumbing adds; well figures describe typical county groundwater, not your specific well.

Get your home’s actual numbersBook a free test