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AquaCensus

Public water system · TX1050001

Active

City of San Marcos

Community water system in Hays County, Texas, drawing primarily on surface water.

Dataset updated . Source: EPA SDWIS/ECHO public records.

Population served

72,970

Service connections

42,746

Primary source

SW

Surface water

System type

CWS

Community water system

System record

PWSIDTX1050001
System typeCommunity water system
Activity statusActive
Population served72,970
Service connections42,746
Primary water sourceSurface water
Owner typeLocal government
Primacy agencyTX state drinking water program
City served
StateTexas
ZIP

Violations & enforcement

BeganViolationContaminantHealth-basedStatus
2025-10-01022950YesArchived
2021-02-01271009NoResolved
2016-05-18757500NoResolved
2016-01-01022950YesResolved
2015-12-30665000NoResolved
2014-07-01022950YesResolved
2014-04-01022950YesResolved
2014-03-30757500NoResolved
2014-01-01022950YesResolved
2013-10-01022950YesResolved
2003-01-01410200YesResolved

City of San Marcos: frequently asked questions

Is City of San Marcos's water safe to drink?

City of San Marcos is an active community water system regulated under the Safe Drinking Water Act, overseen by the TX state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.

Who runs City of San Marcos?

City of San Marcos (PWSID TX1050001) is a local government-owned community water system, regulated by the TX state drinking water program.

How many people does City of San Marcos serve?

City of San Marcos reports serving 72,970 people through 42,746 service connections in Hays County, Texas.

Where does City of San Marcos get its water?

EPA SDWIS lists this system's primary water source as surface water.

Other water systems in Hays County

Water systemCountyPopulation servedTypeSource
City of KyleHays52,000CommunityPurchased surface water
Texas State University - San MarcosHays43,552CommunityGroundwater
Goforth SudHays34,893CommunityPurchased surface water
County Line SudHays19,609CommunityPurchased surface water
City of BudaHays13,830CommunityPurchased surface water
Dripping Springs WSCHays8,037CommunityPurchased surface water