What's in COTO SUR's water?
COTO SUR has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 15,013, over 5,623 connections.
Ranked against every other system in this dataset
36 total violations and 3 health-based ones put COTO SUR at the 62th percentile nationally for violation burden, rank 4,863 of 12,903.
How COTO SUR compares within PR
COTO SUR's 3 health-based violations sit within the PR average of 46.1, across 103 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for COTO SUR is from 1998-01-09 (health-based: 1998-01-09). Last reported to EPA: 06/05/2026.
What kind of problem, specifically
COTO SUR'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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
- Nitrate / nitrite - flagged from: Nitrate
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
COTO SUR'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 36 logged violations can see. The guide to what this data misses covers that gap.