Drinking water quality · 2024
· Verified
· PWSID FL6521715
What's in St Petersburg, FL tap water
4 contaminants in St Petersburg, FL's water sat at or above a federal limit, led by Gross Alpha at 2.7x the limit.
- !4 contaminants at or above a federal limit — worst is Gross Alpha at 2.7x
- !2 contaminants within 20% of a limit
- !14 of 27 core regulated contaminants reported — 13 never appear in this report
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −60 contaminants at or above a federal limit
- −8 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −8 core regulated contaminants never reported (14/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →What to worry about
- Gross Alpha2.7× the federal limit0–40 pCi/L · limit 15 pCi/L
Long-term exposure above the federal limit increases cancer risk.
higher than 95% of U.S. systems
- Barium2.0× the federal limit4 mg/L · limit 2 mg/L
Long-term exposure above the federal limit can raise blood pressure.
higher than 95% of U.S. systems
- Mercury2.0× the federal limit4 ug/L · limit 2 ug/L
Long-term exposure above the federal limit can damage the kidneys.
- Fluoride1.0× the federal limit4 mg/L · limit 4 mg/L
Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.
higher than 95% of U.S. systems
- Chloramine96% of the federal limit3.82 mg/L · limit 4 mg/L
Holds disinfection further into the pipe network, but is regulated under the same residual-disinfectant cap as chlorine.
higher than 85% of U.S. systems
- Radium 226 22880% of the federal limit4 pCi/L · limit 5 pCi/L
+14 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| HAA5 | 22.65 ug/L | 60 ug/L |
| Copper | 0.43 mg/L | 1.3 mg/L |
| Turbidity | 0.32 NTU | 1 NTU |
| TTHM | 22 ug/L | 80 ug/L |
| Bromate | 0–2.51 ug/L | 10 ug/L |
| Uranium | 4 ug/L | 30 ug/L |
| Lead | 1.8 ug/L | 15 ug/L |
| Selenium | 4 ug/L | 50 ug/L |
| Nitrate | 0.23 mg/L | 10 mg/L |
| Nickel | 4 ug/L | — |
| Sodium | 78.5 mg/L | — |
| Escherichia coli (E. coli) | 1 | 0 |
| TOC | 3.7 mg/L | — |
| PFPeA | 3.1 ng/L | — |
What this report doesn't tell you
13 of the 27 contaminants a community water system normally reports do not appear anywhere in St Petersburg, FL's data. Absent is not the same as absent-from-the-water — it means nobody published a number.
+Full detail: PFAS testing, water source, historical monitoring, and the federal violation record
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound detected in St Petersburg, FL
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFPeA
● Detected (no federal limit)Where your water comes from · EPA SDWIS
St Petersburg, FL's drinking water comes from ground water, drawn from 43 sources.
Source
- TAMPA BAY WATER ODESSA WELL · 23
- TAMPA BAY WATER SO. PASCO · 7
- TAMPA BAY WATER SECT 21 FIELD · 6
- TAMPA BAY WATER REG WELLFIELDS · 2
- + 5 more
Treatment
- COSME WATER TREATMENT PLANT
- WASHINGTON TERRACE PUMP
- OBERLY PUMP STATION
Distribution
Also buys water from PINELLAS COUNTY UTILITIES, TAMPA BAY WATER -CYPRESS CREEK, and 2 more.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.