- EPA's UCMR 5 testing looked for 30 contaminants here and found 4.
- Lithium: found in 8 of 8 samples, average 47.6 µg/L, highest 64.4 µg/L (EPA UCMR 5 testing, Dec 2023–Sep 2024)
Public EPA test results
What EPA records show for Agua SUD
EPA system ID TX1080022 · serves Hidalgo County, TX · about 53,796 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Agua SUD (EPA TX1080022)
What EPA records show for Agua SUD, as of October 14, 2026
Health-standard violation: Stage 1 Disinfectants and Disinfection Byproducts Rule, Chlorite, Mar 2023–Jun 2023 (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 1 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2023–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 4.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Agua SUD use chloramine?
We didn't find chloramine in Agua SUD's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)