What's in POST OAK SUD's water?
POST OAK SUD has at least one health-based violation EPA's ECHO database still lists as unaddressed - the required fix has not been reported complete. It serves 3,117 people through 1,039 service connections.
Ranked against every other system in this dataset
37 total violations and 13 health-based ones put POST OAK SUD at the 89th percentile nationally for violation burden, rank 1,449 of 12,903.
Against the TX average
Among the 1,633 TX systems in this dataset, the average is 6.7 health-based violations - POST OAK SUD's 13 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
POST OAK SUD's most recent violation on record is dated 2026-06-12, with the most recent health-based one dated 2025-05-10. Last reported to EPA: 06/26/2026.
The concern categories on record
POST OAK SUD'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 REVISIONS
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Surface Water Treatment Rule
- Disinfection byproducts - flagged from: TTHM; Total Haloacetic Acids (HAA5)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What POST OAK SUD's record does not cover
This is what POST OAK SUD 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 37 logged violations can see. The guide to what this data misses covers that gap.