Sarasota County Water Quality Initiatives
Explore this interactive tool showcasing a selection of Sarasota County’s Water Quality Initiatives. Learn more at scgov.net/waterquality.
Advanced Wastewater Treatment Conversion
Sarasota County is upgrading its three wastewater treatment plants to advanced treatment that will reduce nutrients in our waterways.
When it comes to sewage, out of sight means out of mind, and modern wastewater treatment processes work to keep it that way. But what happens once you flush? For most residents, domestic wastewater generated from bathing, flushing or washing is collected via an underground system of pipes and pumps that convey it to a centralized wastewater treatment facility (WWTF). Minimum state standards require wastewater treatment to remove solid and particulate matter (primary treatment) and disinfect the remaining liquid to be discharged, called effluent (secondary treatment), before it can be disposed of in holding ponds, pumped to underground wells or used to irrigate the landscape.
DIfferent levels of wastewater treatment discharge effluent of different quality and nutient content.
However, these processes do not effectively reduce nitrogen and phosphorus in effluent. When treated effluent is reused for irrigation or spills occur, excess nutrients can end up in the watershed. The resulting nutrient pollution can encourage excess algae growth, including harmful algal blooms, and negatively impact our local water quality and marine life. Upgrading to tertiary treatment (Advanced Wastewater Treatment (AWT)) substantially reduces nutrients in effluent and any potential environmental impact.
Sarasota County Government operates three of the six major regional WWTFs in Sarasota County, while the cities of Sarasota, Venice and North Port each operate one. Sarasota County Government’s WWTFs currently provide secondary treatment. The Sarasota County Commission has approved the upgrade of all three of its WWTFs to AWT, beginning with the Bee Ridge Water Reclamation Facility. Managed by Sarasota County’s Public Utilities Department, the project broke ground in March 2022, and the upgraded facility is expected to be fully operational in 2025. This upgrade is anticipated to increase the amount of wastewater that can be treated from 12 million to 18 million gallons per day, reduce amounts of total nitrogen in effluent by up to 91% and total phosphorus by up to 67%, and increase options for safe disposal of treated wastewater through reuse irrigation. In addition to improving local water quality, this project will also save money - the cost of removing these nutrients from the source through AWT is much lower than the future cost of removing nitrogen and phosphorus from waterways. In the coming years, the Venice Gardens and Central County water reclamation facilities are also planned to be upgraded to AWT facilities.
Bee Ridge AWT Project Sign
If you’d like to learn more about wastewater, you can visit Bee Ridge Water Reclamation Facility or, you can visit Central Wastewater - Playbook for Healthy Waterways – Gulf Coast Community Foundation .
Scroll down to see the locations of Sarasota County Public Utilities reclamation facilities.
Dona Bay Watershed Restoration
Sarasota County is undertaking a significant restoration of the Dona Bay watershed, designed to return the watershed to its original size, decrease nutrient pollution and increase the available public water supply.
The beautiful waters of Dona Bay are host to shimmering seagrass, valuable sport fish and wildlife. Recreation on Dona Bay has defined the coastal lifestyles of Nokomis, Laurel and Venice residents for generations. Historically, the drainage area of the Dona Bay estuary was only 15 square miles. However, decades of projects designed to reduce mosquitoes, increase irrigation to farmland and drain the land for development has enlarged the watershed so that today Dona Bay receives freshwater runoff from 75 square miles of Sarasota and Manatee counties through the human-made channel of Cow Pen Slough. This has contributed to nutrient pollution and altered the salt-freshwater balance of the estuary important for oysters and seagrass to thrive.
The Dona Bay Watershed Management Plan, cooperatively created by Sarasota County’s Public Works Department and the Southwest Florida Water Management District (SWFWMD), is designed to reverse this trend by not only restoring the watershed and reducing the freshwater flow to Dona Bay, but also redirecting up to 15 million gallons a day to the public water supply!
Learn more about the different phases of the Dona Bay Restoration Project.
Click on the phase buttons to interact with map.
Phase 1 of the project, which was completed in spring 2017, diverted a portion of flow from Cow Pen Slough through restored meandering wetlands for natural filtration. The project modified control and conveyance in the watershed and provided multiple benefits to varying degrees, based upon weather patterns and the county’s ability to balance the priorities of the community against the basic goals and objectives of the Dona Bay Watershed Management Plan. Phase 1 has reduced nitrogen input to Dona Bay by more than 18,000 pounds annually.
Dona Bay Bypass Ditch
North Pinelands Storage Facilty
To learn more about Phase 1 of the project, see the Phase 1 Design Sheet .
Phase 2 of the project will repurpose the Venice Minerals Mine borrow pit into the Dona Bay Surface Water Storage Facility, a large-scale regional stormwater storage area and a future source of public drinking water supply. The project will reduce the stormwater volume in the Dona Bay by approximately 9.21 acre-feet and remove an additional 940 pounds of total nitrogen load annually. The project is scheduled to be completed in May 2024.
Central Pinelands South Lake Pond Structure
To learn more about Phase 2 of the project, see the Phase 2 Design Sheet .
Future Phases of the Dona Bay Watershed Restoration Project
Phase 3 is a future aquifer recharge project that will involve construction of one or more recharge wells intended to reduce saltwater intrusion caused by withdrawals by the Carlton Water Treatment Plant. The project is in the pre-design phase that involves surface water monitoring and data analysis to determine the amount of water flowing from Cow Pen Slough to the Dona Bay Surface Water Storage Facility (formerly the Venice Minerals Borrow Pit, in Venice). This “water budget” will allow staff to determine how many recharge wells are needed. The pre-design phase also includes water quality sampling and construction of a test well.
Phase 4 is a rehabilitation of the King’s Gate Control Structure located in Cow Pen Slough behind the King’s Gate neighborhood. Two gates that control the flow of water from Cow Pen Slough to Dona Bay will be replaced, along with the controls necessary to control them. A catwalk for staff to access the structure controls will also be replaced and upgraded. The construction contract was awarded in March 2023 with work expected to be completed in the summer of 2023.
Phase 5 is intended to reduce the amount of freshwater flowing from the Myakka River through the Blackburn Canal to Roberts Bay in Venice. The first step will be a feasibility study to determine the location and type of water flow restriction to be placed in Blackburn Canal. The county has begun the solicitation process to hire a consultant to produce the study.
Green Infrastructure
Sarasota County has examples of green infrastructure throughout the county that are designed to reduce nutrient pollution and stormwater runoff. They are functional and built to work with nature so you may not have even noticed them hiding in plain sight.
Green infrastructure is an approach to capturing and cleaning urban stormwater that mimics the way a natural landscape percolates and filters runoff from rainfall. More natural techniques capture stormwater onsite, helping slow the flow and promote water absorption back into the environment rather than piping it directly to water bodies. Also known as Low Impact Development (LID), these constructed stormwater management projects help reduce flooding and improve water quality in downstream waterways.
Sarasota County has implemented green infrastructure in its own construction projects and properties, including within the departments of UF/IFAS Extension and Sustainability , Public Works , and Parks, Recreation and Natural Resources . Additionally, the LID Manual enables the private sector to apply the concepts in their own land development designs.
For more information on green infrastructure and how you can get involved, visit the Low Impact Development webpage on scgov.net. To see all LID sites in Sarasota County, visit the Sarasota County Water Atlas LID Map .
Learn more about different types of green infrastructure located throughout Sarasota County.
Click on the green infrastructure type buttons to interact with map.
Green Roofs: a rooftop method of capturing and storing rainfall where vegetation and a water storage area are installed on the roof. Rainwater can then evaporate or water the plants; overflow is discharged to a cistern for storage and use as irrigation or greywater for the building.
Green Roof at Caspersen Beach Park
Rain Barrels and Cisterns: a collection system to divert and store rainwater from roof gutters for future use, providing a free source of relatively clean, soft water. There are several types: small residential systems for irrigation, large residential or commercial systems for irrigation, and large residential or commercial systems for greywater.
UF/IFAS Extension and Sustainability Sarasota County - Twin Lakes Office Rain Barrel
UF/IFAS Extension and Sustainability Sarasota County - Twin Lakes Office Cistern - hidden beneath this outdoor classroom is a 28,000 gallon rainwater cistern designed to provide water for irrigation and restroom toilet flushing.
Sarasota County Operations Center Rain Barrel
Pervious Pavement: alternative forms of pavement, also known as permeable or porous pavement, that encourage stormwater to seep through the pavement and into the nutrient-absorbing layer underneath. The layers filter and temporarily retain water before it absorbs into the surrounding soil, rather than becoming unfiltered runoff. These are ideal for areas such as parking spots, residential streets, sidewalks and driveways. Pervious pavement materials include different sizes of gravel or pavers on top of layers of compacted sand and gravel.
Siesta Key Beach Pervious Pavement
UF/IFAS Extension and Sustainability Sarasota County - Twin Lakes Office Pervious Concrete Sidewalk
Bioswales : shallow sloped channels built into landscapes filled with native vegetation designed to capture and temporarily store rainfall. Bioswales use combinations of gravel, soils, mulch and vegetation in order to encourage water absorption and nutrient filtration, as would typically happen in the natural environment.
Jug Handle Intersection at Fruitville Road and Sarasota Center Boulevard Bioswale
Bioswale at Ringling Boulevard and Pineapple Avenue
Bioswale at Ringling Boulevard to Gulf Stream Avenue
WaterGoats
Several WaterGoats float in bodies of water throughout Sarasota County, capturing garbage before it makes its way out to Sarasota Bay.
Have you seen a WaterGoat ? No, it’s not a mythical creature - it’s a new water quality improvement strategy that helps capture floating trash in our waterways, especially plastic pollution. A WaterGoat is a chain of floating buoys anchored just downstream of a stormwater outfall. It traps and prevents floating debris from continuing downstream and polluting our bays. Trash caught up in the WaterGoat can be scooped out periodically for proper disposal. Why the name WaterGoat? Just like a goat eats everything in its path, the WaterGoat captures everything floating in its path!
Seven of these WaterGoats have been installed throughout the county, ranging from Alligator Creek in Venice to Whitaker Bayou in the City of Sarasota. These WaterGoats have been installed by the Sarasota County Neighborhood Environmental Stewardship Team ( NEST ) Program, which is proud to partner with the Keep Sarasota County Beautiful Program and Volunteer Sarasota County . WaterGoats are inexpensive to build and install, and they require minimal maintenance aside from trash removal, which typically occurs every one to three months.
You can help reduce the load on our WaterGoats and prevent trash from reaching our waterways by picking up garbage you see on land or in the water. To get involved with NEST or Sarasota County’s WaterGoat Program, visit the Sarasota County Water Atlas Get Involved webpage.
In addition, another storm management tool that the county uses are baffle boxes. Baffle boxes are large underground boxes that can be installed near the end of a stormwater management system such as a pipe outfall. Baffle boxes are usually included as a part of the stormwater system in locations where large amounts of pollutants such as sediment, vegetation and floatable trash and debris have been observed. The boxes contain a series of sediment settling chambers separated by short walls (baffles). As stormwater runoff flows through the box, the chambers capture sediment and large debris, with floatable pollutants trapped in baskets above the chambers. During periods of high water volume/flow, such as after a tropical storm or hurricane, the boxes allow the water to flow through unimpeded to avoid upstream flooding.
Baffle Box Flow Diagram
Baffle boxes have been installed in several locations throughout the county. The boxes can be opened from above and are regularly maintained by staff.
Sarasota County's Neighborhood Environmental Stewardship Team (NEST) WaterGoat Cleanup Program locations.
Environmental Restorations
Environmental restoration projects being undertaken by the Sarasota County Parks, Recreation, and Natural Resources and Public Works departments in Alligator Creek, Red Bug Slough and Blackburn Point Park will naturalize streams, wetlands, and shorelines with native plantings, stabilize banks, and restore habitat, protecting water quality and improving natural environments.
Scroll to learn more about some of the county's environmental restoration project locations. Click the arrow on the photos to see more images of the projects.
Red Bug Slough Preserve
Red Bug Slough Preserve is a 72-acre suburban oasis in central Sarasota County that is home to more than 100 species of birds! This restoration project installed native wetland plants alongside a 1,200-foot portion of the shoreline for bank stabilization.
In addition, several marsh areas were planted and reconnected to the flow way to help filter and improve water quality on its way to Phillippi Creek, then out to Roberts Bay. Invasive species such as rosary pea, air potato, arrowhead vine, cogongrass and caesarweed were removed.
Blackburn Point Park
Blackburn Point Park in Osprey is a popular boat launch and bayfront park on Blackburn Bay. An ongoing shoreline restoration project replaced invasive Australian pines with Florida-native trees, and installed coir logs to reduce wave action, and therefore erosion, on the shoreline. Oyster bags were also deployed along the shoreline, which will significantly increase filtration of nutrient pollution to protect Blackburn Bay.
Alligator Creek
The Alligator Creek restoration project in south Venice aims to restore Alligator Creek to a more naturalized flow, while reducing nutrient and sediment pollution to nearby Lemon Bay. Recently Sarasota County was notified the National Oceanic and Atmospheric Administration (NOAA) has recommended the Alligator Creek Stream Restoration project to receive a Transformational Habitat Restoration and Coastal Resilience grant in the amount of $14.5 million for construction.
The project is currently in the design phase with anticipated construction to begin in early 2024. Objectives for the stream restoration and enhancement project include: water quality improvements (reduce downstream flow volume, improve denitrification, and erosion prevention), stabilization and naturalization (via natural channel design) of the existing creek banks, hydrologic restoration of historic flood plain areas, natural systems conservation and restoration, enhanced recreation, increased wildlife and fisheries utilization, and reduced maintenance costs.
Land Acquisition
Sarasota County’s land acquisition programs, led by the Parks, Recreation, and Natural Resources Department, have acquired or protected over 40,000 acres of land. By protecting these areas, the county is also protecting the natural storage, filtration and flow of water, as well as promoting natural cycling of nutrients through the ecosystem.
Below are examples of some ESLPP acquisitions and conservation easements. To date, Sarasota County has protected 77 properties totaling 18,743 acres through fee-simple acquisitions and 11 properties totaling 21,421 acres through conservation easements.
Click on the property name buttons to interact with map.
Deer Prairie Creek Preserve Pond
Deer Prairie Creek Preserve Dam
Flint Conservation Easement Cabbage Palms
Hall Conservation Easement Grasslands
Howze Conservation Easement Hammock
Howze Conservation Easement Trail
Howze Conservation Easement South Boundary
Old Miakka Preserve
Old Miakka Preserve
Aeration Pretreatment
Sarasota County’s Solid Waste Department is currently installing an aeration system in the existing leachate storage tank at the Central County Solid Waste Disposal Complex to pre-treat excess nitrogen in the landfill leachate before it is sent to the wastewater treatment plant.
Follow the map to learn more about the landfill leachate disposal process.
Central County Solid Waste Disposal Complex
Sarasota County is working to find solutions for landfill leachate pre-treatment. Pretreating leachate at the landfill can help reduce impact to operations at the treatment plant. This project, led by Sarasota County’s Solid Waste Department , is expected to be completed in 2023.
City of Venice East Side Water Reclamation Facility
Once the collected leachate wastewater is pretreated, it is transported and treated at the plant to reduce nitrogen and ammonia. This is the final step in the treatment process.
Healthy Ponds
Sarasota County works through its Neighborhood Environmental Stewardship Teams (NEST) Program and as partners in the Healthy Pond Collaborative (HPC) initiative to help homeowners associations (HOAs) throughout the county enhance the beauty and function of their stormwater ponds to reduce nutrient pollution in our natural waterways, while improving wildlife habitat and neighborhood curb appeal.
Below are examples of some healthy pond locations in our local communities. Click on each to see images of what a healthy pond can look like.

The Meadows Community

Jug Handle Intersection at Fruitville Road and Sarasota Center Boulevard

Mira Lago Community

Stoneybrook Community

Rivendell Community
Florida-Friendly Landscaping TM
Florida-Friendly Landscaping TM implemented by UF/IFAS Extension Sarasota County is an effective way to create a green space that conserves water, reduces pollution AND looks amazing!
Scroll to learn more about some of the county's public FFL sites. Click the arrow on the photos to see more images of the projects.
Reclaimed Water Map
Sarasota County has developed an informative tool to show residents the approximate amount of nitrogen in their reclaimed irrigation water and how to make informed decisions about their own fertilizer use based on those values.
Click the map below to see where we get reclaimed water.
IFAS Public Reclaimed Water Tool Web App
This map tool uses data from Sarasota County's three major reclamation facilities: Bee Ridge Water Reclamation Facility, Central County Water Reclamation Facility and Venice Gardens Water Reclamation Facility.
Both residential turf and athletic turf customers can use the map tool to learn about the level of nutrients already being applied to their turf through reclaimed irrigation. This information is critical in developing an efficient management plan that can lower fertilizer costs and reduce nutrient pollution by avoiding over-fertilization.