Texas State University - San Marcos, TX Water Quality
Is Texas State University - San Marcos's water safe to drink?
Texas State University - San Marcos has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 43,552 people get their water from it, across 2,502 connections.
Texas State University - San Marcos's record against the rest of the country
Texas State University - San Marcos has 18 violations on record in total, 1 of them health-based - ranking it 7,875th of 12,903 systems by violation count, the 39th percentile nationally.
Against the TX average
Among the 1,634 TX systems in this dataset, the average is 6.7 health-based violations - Texas State University - San Marcos's 1 is at or below that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
Texas State University - San Marcos's most recent violation on record is dated 2025-02-07, with the most recent health-based one dated 2015-01-04. Last reported to EPA: 06/26/2026.
The concern categories on record
Texas State University - San Marcos's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Lead & copper - flagged from: Lead and Copper Rule
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What Texas State University - San Marcos's record does not cover
This is what Texas State University - San Marcos reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and Texas State University - San Marcos's customers' taps is household plumbing, invisible to a system-level record ranked 7,875th of 12,903 by violation count. The guide to what this data misses covers that gap.