What was found in Clearwater'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 |
|---|---|---|---|
| Nitrate | 770.5 µg/L 7.7% of the EPA limit 10000 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Fluoride | 661 µg/L 17% of the EPA limit 4000 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Nitrite | 341 µg/L 34% of the EPA limit 1000 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| TTHM | 65.65 µg/L 82% of the EPA limit 80 µg/L Main supplier: PINELLAS COUNTY UTILITIES · 506,353 people · 2019
Highest in the city: 86 µg/L — CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 48.2285 µg/L 80% of the EPA limit 60 µg/L Main supplier: PINELLAS COUNTY UTILITIES · 506,353 people · 2019 | 3/3 | SYR4 |
| Arsenic | 43.2 µg/L 432% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Barium | 27 µg/L 1.4% of the EPA limit 2000 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Copper | 2.35 µg/L 0.2% of the EPA limit 1300 µg/L Main supplier: PINELLAS COUNTY UTILITIES · 506,353 people · 2017
Highest in the city: 24.7 µg/L — TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 3/3 | SYR4 |
| Cyanide | 19.59 µg/L 9.8% of the EPA limit 200 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 2/3 | SYR4 |
| Chromium | 9.955 µg/L 10% of the EPA limit 100 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Selenium | 8.85 µg/L 18% of the EPA limit 50 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.155 pCi/L 34% of the EPA limit 15 pCi/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2017 | 1/3 | SYR4 |
| Lead | 0.2000 µg/L 1.3% of the EPA limit 15 µg/L Main supplier: PINELLAS COUNTY UTILITIES · 506,353 people · 2019
Highest in the city: 4.495 µg/L — TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 2/3 | SYR4 |
| Dalapon | 1.105 µg/L 0.6% of the EPA limit 200 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 2/3 | SYR4 |
| Antimony, Total | 1.095 µg/L 18% of the EPA limit 6 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 1/3 | SYR4 |
| Combined Uranium | 1.02512 µg/L 3.4% of the EPA limit 30 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1 µg/L 17% of the EPA limit 6 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 1/3 | SYR4 |
| cis-1,2-Dichloroethylene | 0.6900 µg/L 1% of the EPA limit 70 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 1/3 | SYR4 |
| Thallium, Total | 0.5000 µg/L 25% of the EPA limit 2 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 1/3 | SYR4 |
| Beryllium, Total | 0.2000 µg/L 5% of the EPA limit 4 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.2000 µg/L 0.1% of the EPA limit 400 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 1/3 | SYR4 |
| Chlorobenzene | 0.1000 µg/L 0.1% of the EPA limit 100 µg/L Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.1000 µg/L 5% of the EPA limit 2 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 1/3 | SYR4 |
| Benzo(A)Pyrene | 0.0200 µg/L 10% of the EPA limit 0.2000 µg/L Highest in the city: TAMPA BAY WATER -CYPRESS CREEK · 25 people · 2019 | 1/3 | SYR4 |
| PFOS | 0.0059 µg/L No EPA limit set Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2025 | 1/3 | UCMR-5 |
| Pfpea | 0.0035 µg/L No EPA limit set Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2025 | 1/3 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Highest in the city: CLEARWATER WATER SYSTEM · 115,000 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.00080 mg/L 5.3% of the EPA limit 0.0150 mg/L Main supplier: PINELLAS COUNTY UTILITIES · 506,353 people · 2020
Highest in the city: 0.0025 mg/L — CLEARWATER WATER SYSTEM · 115,000 people · 2021 | 3/3 | 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 Clearwater
| Supplier | Population served |
|---|---|
| PINELLAS COUNTY UTILITIES | 506,353 |
| CLEARWATER WATER SYSTEM | 115,000 |
| TAMPA BAY WATER -CYPRESS CREEK | 25 |
Frequently asked questions about Clearwater tap water
Is Clearwater tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Clearwater. 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 Clearwater?
3 public water suppliers report drinking-water monitoring for Clearwater, Florida to the EPA. Each is listed above with its population served.
What contaminants are in Clearwater's water?
The contaminants EPA monitoring detected in Clearwater include Nitrate, Fluoride, Nitrite, TTHM, Total Haloacetic Acids (HAA5). 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.