Tap Water Quality Report
Tap water quality in Laredo, Texas
Tap water in Laredo, Texas receives a grade of F (50/100) from TapWaterSafety.org. It's served by CITY OF LAREDO. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Bromochloroacetic acid significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Laredo's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Laredo.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 42.9 ppb, 715x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 9.93 ppb, 496x above the EWG health guideline of 0.02 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 60.2 ppb, 402x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF LAREDO (system ID TX2400001) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Lead and Copper Rule Revisions | Required treatment not met | 10/17/2024 | Resolved |
| Lead and Copper Rule Revisions | Missed reporting | 10/17/2024 | Resolved |
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule | Missed testing or reporting | 08/01/2024 | Resolved |
| Revised Total Coliform Rule | Contaminant above the legal limit | 10/01/2024 | Open |
| Public Notice Rule and Revised PN Rule | Other (e.g. public notice) | 05/15/2025 | Resolved |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for Laredo
Filters matched to the specific contaminants in Laredo's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in Laredo's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
42.9 ppb | 0.06 | — | — | — | — | — | 715× over |
| Bromochloroacetic acid Disinfection byproduct |
9.93 ppb | 0.02 | — | — | — | — | — | 496× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
60.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 402× over |
| Bromodichloromethane Disinfection byproduct |
21.3 ppb | 0.06 | — | — | — | — | — | 355× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
30.7 ppb | 0.1 | 60.0 | 60 | — | — | — | 307× over |
| Dibromoacetic acid Disinfection byproduct |
5.14 ppb | 0.03 | — | — | — | — | — | 171× over |
| Dibromochloromethane Disinfection byproduct |
16.2 ppb | 0.1 | — | — | — | — | — | 162× over |
| Trichloroacetic acid Disinfection byproduct |
9.62 ppb | 0.1 | — | — | — | — | — | 96× over |
| Dichloroacetic acid Disinfection byproduct |
15.0 ppb | 0.2 | — | — | — | — | — | 75× over |
| Chloroform Disinfection byproduct |
17.6 ppb | 0.4 | — | — | — | — | — | 44× over |
| Bromoform Disinfection byproduct |
3.8 ppb | 0.5 | — | — | — | — | — | 7.6× over |
| Nitrate Inorganic |
0.489 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.5× over |
| Uranium Radiological |
1.45 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 3.4× over |
| Aluminum Heavy metal |
140.7 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Vanadium Other |
4.89 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Bromochloromethane Other |
0.0106 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
5.45 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
90.3 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
2.66 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.644 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Selenium Heavy metal |
0.647 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.303 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
3.57 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
1.15 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Acetone Other |
0.733 ppb | — | — | — | — | — | — | Below guideline |
| Cyanide Inorganic |
9.23 ppb | — | 200.0 | 50 | 70 | 150 | — | Below guideline |
| Fluoride Inorganic |
0.607 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.55 ppb | — | — | — | — | — | — | Below guideline |
| Hexadecanoic acid Other |
6.98 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
27.3 ppb | — | — | — | — | — | — | Below guideline |
| Octadecanoic acid Other |
8.07 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from CITY OF LAREDO.