True H2O

Guadalupe County, TX

Reverse Osmosis in Guadalupe County, TX

Drinking-water purity at the kitchen tap.

Call (210) 726-6895

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

Why Reverse Osmosis fits Guadalupe County

Guadalupe County water carries a heavy mineral load that shows up in taste and in the total dissolved solids reading. A four-stage reverse osmosis unit under the kitchen sink drops TDS by 90 percent or more, which is the difference most homeowners taste against bottled water. Pair it with the softener to extend membrane life on hard Guadalupe County water.

  • Four-stage cartridge plus membrane system under the kitchen sink.
  • Dedicated lead-free faucet at the counter.
  • Refrigerator and ice-maker line tied in.

Other services in Guadalupe County

Nearby service areas

Posted by the True H2O Team. Service area pages reflect water-utility data published by each county's primary water provider.