What was found in Port St. Joe'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 |
|---|---|---|---|
| Fluoride | 46 µg/L 1.2% of the EPA limit 4000 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019
Highest in the city: 3580 µg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2017 | 2/2 | SYR4 |
| Nitrate | 32 µg/L 0.3% of the EPA limit 10000 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019
Highest in the city: 290 µg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2019 | 2/2 | SYR4 |
| TTHM | 109.175 µg/L 136% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019
Highest in the city: 112.315 µg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 62.345 µg/L 104% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 2/2 | SYR4 |
| Copper | 1.76 µg/L 0.1% of the EPA limit 1300 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019
Highest in the city: 42 µg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2017 | 2/2 | SYR4 |
| Barium | 21.95 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019
Highest in the city: 31.7 µg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2017 | 2/2 | SYR4 |
| Nitrite | 23 µg/L 2.3% of the EPA limit 1000 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| Lithium | 11 µg/L No EPA limit set Highest in the city: GULF COUNTY WATER DEPARTMENT · 6,287 people · 2024 | 1/2 | UCMR-5 |
| Dalapon | 2.82 µg/L 1.4% of the EPA limit 200 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| Cyanide | 2.7 µg/L 1.4% of the EPA limit 200 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| Arsenic | 0.7000 µg/L 7% of the EPA limit 10 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019
Highest in the city: 2.4 µg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2017 | 2/2 | SYR4 |
| Combined Uranium | 0.8717 µg/L 2.9% of the EPA limit 30 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2017 | 1/2 | SYR4 |
| Xylenes, Total | 0.7600 µg/L 0% of the EPA limit 10000 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| 2,4-D | 0.4615 µg/L 0.7% of the EPA limit 70 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| Total Polychlorinated Biphenyls (PCB) | 0.3700 µg/L 74% of the EPA limit 0.5000 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2018 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.3000 pCi/L 2% of the EPA limit 15 pCi/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2017 | 1/2 | SYR4 |
| 2,4,5-TP | 0.1000 µg/L 0.2% of the EPA limit 50 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2017 | 1/2 | SYR4 |
| Lead | 0.1000 µg/L 0.7% of the EPA limit 15 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| Mercury | 0.1000 µg/L 5% of the EPA limit 2 µg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: PORT ST. JOE, CITY OF · 13,848 people · 2023
Highest in the city: 0.0120 mg/L — GULF COUNTY WATER DEPARTMENT · 6,287 people · 2025 | 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 Port St. Joe
| Supplier | Population served |
|---|---|
| PORT ST. JOE, CITY OF | 13,848 |
| GULF COUNTY WATER DEPARTMENT | 6,287 |
Frequently asked questions about Port St. Joe tap water
Is Port St. Joe tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Port St. Joe. 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 Port St. Joe?
2 public water suppliers report drinking-water monitoring for Port St. Joe, Florida to the EPA. Each is listed above with its population served.
What contaminants are in Port St. Joe's water?
The contaminants EPA monitoring detected in Port St. Joe include Fluoride, Nitrate, TTHM, Total Haloacetic Acids (HAA5), Copper. 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.