What EPA data, PFAS monitoring, and independent health research reveals about San Antonio's drinking water -- and what you can do about it.
San Antonio draws from the Edwards Aquifer -- naturally hard water with high calcium and magnesium.
Hard water causes scale buildup, shortens appliance life, and affects taste.
SAWS has logged disinfection byproduct violations -- chlorine reaction with organic matter.
A whole-house softener combined with an under-sink RO is the gold standard for SA residents.
San Antonio water meets EPA legal standards but meeting standards is not the same as being free of contaminants. EPA limits are set based on feasibility, not always on what is safest for health. Enter your ZIP above to see the full violation history and PFAS data for your specific water system.
Even compliant water can contain contaminants at levels above what independent health scientists consider safe -- particularly for PFAS, lead, and chromium-6. An EPA-certified RO system removes 95-99% of all detected contaminants and costs $0.10-$0.25 per gallon, compared to $1-$3 for bottled water.
For most US cities, a reverse osmosis system under the sink is the gold standard -- it removes lead, PFAS, arsenic, nitrates, fluoride, and virtually everything else. For renters, a Waterdrop D4 countertop RO requires zero installation. Enter your ZIP above to get personalized recommendations based on your actual water report.
City-wide data is just the start. Enter your ZIP to see your exact water system's EPA report, PFAS levels, and violation history.
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