Why spots still happen
Lime softening lowers calcium and magnesium but leaves sodium and other dissolved solids. Oakland Park's 2024 report lists sodium at 28.2 ppm, and Broward County's 2025 report lists 26.5 ppm for its 2A district, for example. When a droplet dries, whatever was dissolved stays behind. Glass shower doors, dark tile and polished chrome show it most.
Note that sodium itself is not hardness; it is one example of a dissolved mineral that softening leaves behind. TDS, measured at your tap, shows the total.
Read the residue
- Light film that wipes off: normal residue; dry the glass.
- Hard crust on aerators and shower heads: real hardness; test it.
- Scale in kettles and coffee makers: minerals concentrated by heat.
- Spots on windows, cars and pavers: usually sprinkler water.
Softener vs. conditioner
| Ion-exchange softener | Salt-free conditioner | |
|---|---|---|
| Lowers hardness | Yes | No |
| Fewer spots | Yes | Usually not |
| Salt, drain, power | Yes | Usually no |
| Best fit | Confirmed hardness, businesses, wells | Scale reduction where spots are not the concern |
Details: salt-free vs. ion exchange.
Where scale really shows up
Inside equipment: water heaters, espresso machines, dishwashers and ice makers. In Oakland Park's restaurants and breweries, descaling is routine and an ion-exchange softener usually reduces it. In a home on public water, frequent descaling is unusual and worth a test.
Cheaper things to try first
- Squeegee shower glass after each shower and run the bathroom fan.
- Use rinse aid in the dishwasher.
- Soak aerators and shower heads in white vinegar, following the fixture maker's care instructions.
- Aim sprinklers away from windows and cars.
More: water spots on glass shower doors.
If you have a tank water heater, flushing it once a year per the maker's instructions also keeps sediment and scale from building up inside, whatever your water source.
After a boil water notice or main work
After water main work, flushing or a precautionary boil water notice, some homes see a temporary change in spotting or a little sediment on aerators. Clean the aerators and run the cold water for a few minutes. If the change persists, call your provider: Public Works at 954-630-4430 for city customers, or Broward County at 954-831-3250. Persistent heavy scale is the point to test hardness.
Test before you buy
Call, text or WhatsApp Jorge at (305) 793-5974 for a free hardness test. If hardness is confirmed, see water softeners in Oakland Park.
https://www.oaklandparkfl.gov/DocumentCenter/View/14670/Water-Quality-Report-2024
https://www.broward.org/waterservices/WaterQualityReport
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist