What was found in Corpus Christi's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Chlorite | 690 µg/L 69% of the EPA limit 1000 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Fluoride | 620 µg/L 16% of the EPA limit 4000 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Nitrate | 590 µg/L 5.9% of the EPA limit 10000 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Copper | 180.91 µg/L 14% of the EPA limit 1300 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2017
Highest in the city: 430 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Cyanide | 210 µg/L 105% of the EPA limit, at the 95th percentile of samples — 200 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Barium | 136.05 µg/L 6.8% of the EPA limit 2000 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| TTHM | 65.94 µg/L 82% of the EPA limit 80 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 79.82 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35.69 µg/L 59% of the EPA limit 60 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 42.12 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 22.475 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 26.54 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 21.475 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 26.3 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Lithium | 26.2 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2023 | 2/2 | UCMR-5 |
| Bromoform | 18.7 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 22.54 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 18.355 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 21.1 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Chloroform | 20.91 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 2/2 | SYR4 |
| Lead | 7.399 µg/L 49% of the EPA limit 15 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2017
Highest in the city: 17 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 13.19 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 15.96 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 7.99 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 10.26 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 7.3 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 8.415 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 8.025 pCi/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2017 | 1/2 | SYR4 |
| Selenium | 5.34 µg/L 11% of the EPA limit 50 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 3.95 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019
Highest in the city: 4.94 µg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2019 | 2/2 | SYR4 |
| Arsenic | 3.055 µg/L 31% of the EPA limit 10 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.99 µg/L 33% of the EPA limit 6 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.3190 µg/L 11% of the EPA limit 3 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.0795 µg/L 2% of the EPA limit 4 µg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0115 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2023 | 2/2 | UCMR-5 |
| Pfpea | 0.0056 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0017 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: CITY OF CORPUS CHRISTI · 318,387 people · 2023
Highest in the city: 0.0034 mg/L — CORPUS CHRISTI NAVAL AIR STATION · 7,048 people · 2024 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Corpus Christi
| Supplier | Population served |
|---|---|
| CITY OF CORPUS CHRISTI | 318,387 |
| CORPUS CHRISTI NAVAL AIR STATION | 7,048 |
Frequently asked questions about Corpus Christi tap water
Is Corpus Christi tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Corpus Christi. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Corpus Christi?
2 public water suppliers report drinking-water monitoring for Corpus Christi, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Corpus Christi's water?
The contaminants EPA monitoring detected in Corpus Christi include Chlorite, Fluoride, Nitrate, Copper, Cyanide. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.