Water Testing in Guadalupe County, TX

About the water in Guadalupe County

Guadalupe County is served by Green Valley Special Utility District (GVSUD), Springs Hill Water Supply Corporation, Crystal Clear SUD, and the City of Seguin, which draws from Carrizo-Wilcox Aquifer treated water (purchased from Schertz-Seguin Local Government Corporation) plus Edwards Aquifer wells in the western portion of the county. Local water tests in the range of 15 grains per gallon, based on the most recent utility averages.

Guadalupe County is patchwork-served. Springs Hill WSC covers most of the rural footprint, Crystal Clear SUD covers the I-10 corridor, and Seguin runs its own utility. Hardness reads differently on each side of the county line.

Common local water concerns

• Trihalomethanes (TTHM: 25 ppb LRAA per GVSUD CCR)
• Lead (3.5 ppb 90th percentile, below 15 ppb action level; GVSUD ran Lead Service Line Inventory in 2024)
• Iron (well systems)

View the Green Valley Special Utility District (GVSUD), Springs Hill Water Supply Corporation, Crystal Clear SUD, and the City of Seguin Consumer Confidence Report

Other services in Guadalupe County

• Water Softeners in Guadalupe County

  Stop the scale. Save the appliances.

• Whole-Home Filtration in Guadalupe County

  One stack on the main line. Every tap protected.

• Reverse Osmosis in Guadalupe County

  Drinking-water purity at the kitchen tap.

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