About Wastewater

The City currently maintains approximately 140 miles of sanitary sewer mains, 17 miles of force mains, 3,100+ manholes, approximately 56 miles of laterals (right-of-way service lines to homes), and 47 lift stations.     

The City also has a Television and Seal Truck to visually inspect the sanitary sewer mains, while in use and with no disruption to service. This equipment allows the City to take a proactive approach to prevent damage caused by deterioration/age or by installation of other utilities that could potentially cause sewer back-ups and/or road failures.

The City has state-of-the-art equipment such as a radio-based Supervisory Control and Data Acquisition (SCADA) System which provides the Citizens of Dunedin with 24 hour telemetry monitoring of each lift station. This allows us to monitor the status of each lift station to help avert any sanitary sewer spills into the streets or back-ups into homes.


To provide for the health, safety, and welfare of the community through the performance of effective collection and treatment of wastewater in compliance with City, State, and Federal regulations in an efficient manner while providing superior customer service and maintaining cost controls.



Experiencing Blockages?

Before calling the plumber...

If you are experiencing sewage stoppage or blockage, you are highly advised to first contact the City's Wastewater Division before the plumber!

  • Monday through Friday, from 7:30 a.m. to 4:00 p.m. call 727-298-3256 to report blockages.
  • Anytime after-hours, call 727-639-3570.

If you fail to call the City first, the City may not reimburse the resident for work done in the right-of-way.

Who is responsible?

  • The City will come out to inspect the right-of-way for blockages.

  • The City is responsible for and will make the necessary repairs to sewer blockages within the public right-of-way and easements. 

  • Then, if the sewer problem is located in an area that is the property owner's responsibility, the City will advise the caller that they will have to make their own arrangements with a plumber to have the necessary work done.

Not Down the Drain

Step 1.Nothing but the 3Ps down the toilet

  • Only flush the 3Ps (pee, poo, and toilet paper) down your toilet.
  • Anything else could cause blockage or damage to the plumbing in or around your home, or the City maintained wastewater system.  

Step 2.Household Hazardous Waste

  • Chemicals, medicines, pesticides, automotive products, and other household hazardous waste should never be disposed of down the drain. 
  • Wastewater treatment facilities cannot remove household waste from water.

Where Does it Go? Search Tool

Step 3.How to Dispose of FOGs

  • Fats, Oils, and Grease should never go down the drain.


  • Scrape Your Plate. Wipe all pots, pans, dishes and cooking utensils with a paper towel prior to washing to absorb the grease. 
  • Can the Grease. Pour used cooking grease into an empty, heat-safe container, such as a soup can, and store it in the freezer. Once solidified, toss the can into the garbage.
  • Soak it Up. Remaining oils and grease with an absorbent material such as a paper towel and throw it into your garbage.
Marking Utilities Prior to Construction

Before you install a fence or mailbox, or begin planting a garden or building a deck, or dig for any reason make sure to have your utilities marked!

  • This will help prevent damage to buried utility lines and ensure the safety of you, your neighbors, and the underground infrastructure!
  • Contact Sunshine811 to have your utilities marked every time before construction.
  • No matter how big or small your project, always contact Sunshine811 first!

Sunshine811 - Utilities Locator Requests

Free & Clear Access to Manholes and Lift Stations

The City of Dunedin Wastewater Division requires free and clear access to its manholes and lift stations in case of emergency. Covering or placing decorative planters on top of or around manholes and lift stations makes them difficult to service in adverse conditions. 

"Free and Clear" meaning free access to the manhole for our field staff to work. There should be enough room for two men to work, removing the lid, and gaining access with materials. 

  • Trees, shrubs, and other plants should be placed far enough away to allow access by our field staff and not block access to the manhole.
  • After a storm, please keep manholes, lift stations, cleanouts, and meter boxes free and clear of storm debris piles for collection.

If you hear or see a lift station alarm going off, call the Wastewater Division phone number on the attached sign to come out and inspect it. 


Septic Tank Abandonment

For septic tank problems or abandonment please phone the Pinellas County Health Department, 8751 Ulmerton Road, Largo, FL 33771 at 727-538-7277 or click on the following link Pinellas County Health Department (Septic Tanks) and contact the City of Dunedin Building Division/Permitting Section at 727-298-3202 to check for availability to connect to the City of Dunedin sewer system.

Wastewater Treatment Facility

Wastewater Treatment Facility

Completed in June of 1991, the  City of Dunedin's six million gallon per day Wastewater Facility was designed using the A2O Biological Nutrient Removal (BNR) process. The wastewater primarily consists of the discharge from family dwellings, local businesses, and concentrate flow from the City's Reverse Osmosis Water Treatment Plant.

The City's Wastewater Plant discharges to a permitted slow-rate public access urban reuse system within the city limits of Dunedin. A permitted surface water discharge to Clearwater North Harbor is maintained as an alternative disposal option. 

The Dunedin Wastewater Environmental Laboratory is located within the Administrative Building of the Treatment Plant.

The primary function is to monitor the plant data for process control and improvement.