Tap Water Quality Report
Tap water quality in Corpus Christi, Texas
Tap water in Corpus Christi, Texas receives a grade of C (72/100) from TapWaterSafety.org. It's served by CITY OF CORPUS CHRISTI. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Bromochloroacetic acid significantly above health guideline; Dibromoacetic acid significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Corpus Christi's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Corpus Christi.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 34.6 ppb, 576x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 8.24 ppb, 412x above the EWG health guideline of 0.02 ppb.
Dibromoacetic acid significantly above health guideline
Moderate concernDibromoacetic acid detected at 8.54 ppb, 285x above the EWG health guideline of 0.03 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF CORPUS CHRISTI (system ID TX1780003) for the last 3 years. Checked 2026-10-07.
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 Corpus Christi
Filters matched to the specific contaminants in Corpus Christi'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 Corpus Christi'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 |
34.6 ppb | 0.06 | — | — | — | — | — | 576× over |
| Bromochloroacetic acid Disinfection byproduct |
8.24 ppb | 0.02 | — | — | — | — | — | 412× over |
| Dibromoacetic acid Disinfection byproduct |
8.54 ppb | 0.03 | — | — | — | — | — | 285× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
38.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 259× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
17.7 ppb | 0.1 | 60.0 | 60 | — | — | — | 177× over |
| Bromodichloromethane Disinfection byproduct |
10.3 ppb | 0.06 | — | — | — | — | — | 172× over |
| Dibromochloromethane Disinfection byproduct |
12.6 ppb | 0.1 | — | — | — | — | — | 126× over |
| Dichloroacetic acid Disinfection byproduct |
7.22 ppb | 0.2 | — | — | — | — | — | 36× over |
| Bromoform Disinfection byproduct |
10.4 ppb | 0.5 | — | — | — | — | — | 21× over |
| Trichloroacetic acid Disinfection byproduct |
1.52 ppb | 0.1 | — | — | — | — | — | 15× over |
| Chloroform Disinfection byproduct |
5.33 ppb | 0.4 | — | — | — | — | — | 13× over |
| Chlorite Disinfection byproduct |
523.6 ppb | 50.0 | 1000.0 | — | — | — | — | 10× over |
| Nitrate Inorganic |
0.78 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 5.6× over |
| Chromium (hexavalent) Heavy metal |
0.0263 ppb | 0.02 | — | — | — | — | — | 1.3× over |
| Atrazine Pesticide/Herbicide |
0.08 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| Uranium Radiological |
0.34 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | Below guideline |
| Vanadium Other |
6.26 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
61.8 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
152.3 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Barium Heavy metal |
108.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Selenium Heavy metal |
1.3 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Molybdenum Other |
1.24 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.72 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.399 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
9.6 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
2.25 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.95 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.339 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Cyanide Inorganic |
51.5 ppb | — | 200.0 | 50 | 70 | 150 | — | Fails EU |
| Fluoride Inorganic |
0.387 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Hexadecanoic acid Other |
6.6 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
21.7 ppb | — | — | — | — | — | — | Below guideline |
| Octadecanoic acid Other |
6.2 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 CORPUS CHRISTI.
General Contact
Treatment Plant
ZIP codes served
Corpus Christi's public water systems serve the following ZIP codes: