Hot, cold, or both?
Florida's Department of Health suggests this check:
| What you notice | Likely source |
|---|---|
| Only the hot tap smells | Water heater |
| Only softened water smells | Sulfur bacteria in the softener |
| Strong at first, then fades | Bacteria in the well or plumbing |
| Strong and steady on both | Hydrogen sulfide in well groundwater |
The water heater explanation
A magnesium anode rod protects the heater tank from corrosion. In some water, it reacts and produces hydrogen sulfide gas, which you smell when hot water comes out. It is worse in heaters that sit unused, for example in a seasonal home, or when the thermostat is set low. A plumber can flush the tank or swap the anode for a different type; follow the manufacturer's guidance.
If the smell appears when you come back from a trip, run the hot water for several minutes at a few taps; if it fades, the heater is the likely source.
Why Margate city water rarely smells of sulfur
Margate's 2025 report lists aeration as the first treatment step at the plant, and the city's Utilities Division page says it removes iron and carbon dioxide. Aeration is the same general approach used to drive off hydrogen sulfide in well systems. After lime softening and filtration, the water is disinfected with chloramine. So a sulfur smell on cold city water is unusual and worth reporting to DEES at (954) 972-0828.
Sprinklers and private wells
Irrigation pumped from a shallow well or a canal is untreated and can smell like sulfur where it sprays, especially first thing in the morning. That does not affect your tap. If your home drinks from a private well, see well water treatment in Margate.
Fixes by cause
- Water heater: heater service.
- Softener bacteria: softener cleaning and service.
- Well hydrogen sulfide: aeration or oxidation plus filtration, configured from the well's test; see aeration vs. filtration.
- Well bacteria: well disinfection, then retest.
Not sulfur: the chlorine smell
A swimming-pool smell is chlorine, not sulfur. It is strongest during Margate's annual free-chlorine period (July 28 to August 20 in 2026). See chloramine filters.
Get it diagnosed
Jorge checks hot and cold taps, any softener, and the well or irrigation source, then tells you whether you need a plumber or water treatment. Call, text or WhatsApp (305) 793-5974.
https://www.floridahealth.gov/wp-content/uploads/2025/08/well-water-facts-odor-staining.pdf
https://www.margatefl.com/DocumentCenter/View/11428
https://www.margatefl.com/278/Utilities-Division
https://www.margatefl.com/959/Chlorination-Notice
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist