What's in ZEPHYR WSC's water?
ZEPHYR WSC has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 7,575 people through 2,525 service connections.
ZEPHYR WSC's record against the rest of the country
ZEPHYR WSC has 15 violations on record in total, 8 of thems health-based - ranking it 2,464th of 12,903 systems by violation count, the 81th percentile nationally.
How ZEPHYR WSC compares within TX
TX's 1,633 covered systems average 6.7 health-based violations each; ZEPHYR WSC carries 8, more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for ZEPHYR WSC is from 2027-04-01 (health-based: 2017-01-04). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
ZEPHYR WSC'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:
- Disinfection byproducts - flagged from: TTHM
The most severe category on record is disinfection byproducts, which points toward a carbon-class filter if you want to address it directly.
What this data is and is not
ZEPHYR WSC's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 15 logged violations can see. The guide to what this data misses covers that gap.