Pinellas County Water Atlas


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Water Quality

Explore general as well as scientific information about the movement, chemistry and biology of area surface water environments.

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Water Quality Sampling Sites
Hydrology Sampling Sites
Other Sampling Sites
 

Beach Water Quality from the Florida Healthy Beaches Program

Coastal beach water samples collected every two weeks by the county health departments are analyzed for enterococci and fecal coliform bacteria. High concentrations of these bacteria may indicate the presence of microorganisms that could cause diseases, infections, or rashes. County health departments will issue health advisories or warnings when these conditions are confirmed. Learn more about the Florida Healthy Beaches Program »

Note: We are currently unable to provide you with the most recent samples and alerts on this page. Please click on the county/beach links below to find beach status and alerts.

Source: Florida Healthy Beaches Program
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    Nutrient Chemistry

    Although present in all surface waters, nutrients are among the leading causes of degradation of Florida water resources. Learn more about nutrient chemistry »

    Nutrient Chemistry
    Parameter Latest Value Historic Range Additional Information
    Total Nitrogen (TN) 1,100.0 ug/l
    6/6/2017 10:03:00 AM
    Source: Lee County Environmental Laboratory
    0.0 - 2,400.0 ug/L
    6/6/1971 - 6/6/2017
    3,010 samples
    Total Phosphorus (TP) 25.0 ug/L
    6/6/2017 10:03:00 AM
    Source: Lee County Environmental Laboratory
    0.8 - 2,760.0 ug/L
    6/6/1971 - 6/6/2017
    4,411 samples
    Chlorophyll a,
    uncorrected for
    pheophytin help icon
    3.2 ug/L
    12/14/2015
    Source: EPC Monthly Routine Water Monitoring
    0.0 - 3,100.0 ug/L
    1/24/1972 - 12/14/2015
    1,495 samples
    Chlorophyll a,
    corrected for
    pheophytin help icon
    3.0 ug/L
    6/6/2017 10:03:00 AM
    Source: Lee County Environmental Laboratory
    0.0 - 81.2 ug/L
    1/22/1996 - 6/6/2017
    3,240 samples
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      Water Clarity

      Water clarity or turbidity measures the degree to which light is blocked because the water is cloudy or contains suspended particles, such as algae. Water clarity is one indicator of a waterbody's ability to sustain plants and wildlife. Learn more about water clarity »

      Water Clarity
      Parameter Latest Value Historic Range Additional Information
      Secchi Depth 9.2 ft
      9/19/2017 12:49:00 PM
      Source: EPC Monthly Routine Water Monitoring
      0.7 ft - 36.4 ft
      1/24/1972 - 9/19/2017
      1,720 samples
      Turbidity 2.3 NTU
      6/6/2017 10:03:00 AM
      Source: Lee County Environmental Laboratory
      0.1 NTU - 260.0 NTU
      1/16/1974 - 6/6/2017
      4,791 samples
      Light Attenuation 0.29 Alpha/M
      5/10/1994
      Source: Mote Marine Historic Data from Legacy STORET
      0.20 NTU - 1.43 Alpha/M
      8/8/1990 - 5/10/1994
      101 samples
       
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        Bacteria

        The currently used bacterial indicators for recreational waters include total coliform, fecal coliform and enterococcus. Indicator organisms themselves are not necessarily pathogenic but their presence "indicates" or suggests recent contamination by human sewage or other waste which may result in human illness. Sources of contamination include storm water runoff, sewage overflows and feces from wild and domestic animals. Learn more about marine indicator bacteria »

        Bacteria
        Parameter Latest Value Historic Range Additional Information
        Fecal Coliform 2 CFU/100ml
        6/16/2016
        Source: Shellfish Environmental Assessment Section
        1 - 1,600 CFU/100ml
        10/25/1972 - 6/16/2016
        18,061 samples
        Total Coliform 300 CFU/100ml
        11/28/1979
        Source: FDEP Historic Data from Legacy STORET
        1 - 3,200 CFU/100ml
        1/24/1972 - 11/28/2000
        336 samples
        Enterococcus 1 CFU/100ml
        12/27/2016
        Source: Florida Healthy Beaches Program and Data (Bacterial Counts)
        1 - 768 CFU/100ml
        7/31/2000 - 12/27/2016
        47,903 samples
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          Dissolved Oxygen

          Dissolved Oxygen (DO) is one of the most important indicators of water quality. It is essential for the survival of fish and other aquatic organisms. Learn more about dissolved oxygen »

          Additional Parameters
          Parameter Latest Value Historic Range Additional Information
          Dissolved Oxygen 5.9 mg/l
          9/19/2017 12:51:14 PM
          Source: EPC Monthly Routine Water Monitoring
          0.7 - 19.3 mg/l
          6/6/1971 - 9/19/2017
          7,073 samples
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            Salinity

            Salinity
            Salinity measures the amount of salts dissolved in water. An estuary can exhibit a change in salinity throughout its length as fresh water entering from the tributaries mixes with seawater from the ocean. Learn more about salinity »
            Parameter Latest Value Historic Range Additional Information
            Salinity 31.4 ppt
            9/19/2017 12:51:14 PM
            Source: EPC Monthly Routine Water Monitoring
            0.0 - 50.4 ppt
            1/24/1972 - 9/19/2017
            5,549 samples
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