Is Schertz, TX tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Green Valley Special Utility District. 1 PFAS were detected below the limits.
2 public water systems serve parts of Schertz. The largest, Green Valley Special Utility District, serves 52,497 people. Your water bill names your system.
Largest system
Green Valley Special Utility District
52,497 people · Purchased surface water · EPA ID TX0940020
Buys treated water from Springs Hill Special Utility District, Crwa Lake Dunlap Water Treatment Plant, Crwa Wells Ranch.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 1.8 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across Texas, 28 of 1,130 water systems EPA tested had PFAS above a 2024 federal limit, and 13 systems were above the lead action level in results from the last five years. Texas results.
Schertz homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Schertz city (tables B25034, B25003). Estimates for small places have a margin of error.
Other water systems serving Schertz
- City of Schertz41,948 people · Groundwater · Texas · lists this cityLithium above screening level
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Cibolo 2 mi Green Valley Special Utility District | None above limits | 1.8 ppb |
| Converse 5 mi Green Valley Special Utility District | None above limits | 1.8 ppb |
| New Braunfels 12 mi New Braunfels Utilities | None above limits | 1.7 ppb |
| Seguin 17 mi City of Seguin | None above limits | 1.45 ppb |
| San Antonio 18 mi San Antonio Water System | None above limits | 1.6 ppb |
| San Marcos 29 mi City of San Marcos | None above limits | 1.63 ppb |
Schertz ZIP codes (1)
- 78154
Questions
Is Schertz tap water safe to drink?
Green Valley Special Utility District has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Schertz, TX?
2 public water systems serve parts of Schertz. The largest is Green Valley Special Utility District (52,497 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.
Does Schertz tap water have PFAS?
Green Valley Special Utility District had 1 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.
Do Schertz homes have lead pipes?
Census estimates put 17% of Schertz homes as built before 1980 (Texas: 33%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Green Valley Special Utility District's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.