- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 4 of 4 samples, average 58.8 µg/L, highest 76 µg/L (EPA UCMR 5 testing, Aug 2024–Feb 2025)
Public EPA test results
What EPA records show for City of Hidalgo Water System
EPA system ID TX1080021 · serves Hidalgo County, TX · about 14,800 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
City of Hidalgo Water System (EPA TX1080021)
What EPA records show for City of Hidalgo Water System, as of October 14, 2026
Health-standard violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, from Oct 2024, with no return-to-compliance action in EPA records (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 1.77 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 1.
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 City of Hidalgo Water System use chloramine?
We didn't find chloramine in City of Hidalgo Water System'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)