Match stain to source
| Where | Likely source |
|---|---|
| Walls, sidewalks, cars near sprinklers | Irrigation well water |
| Pool deck, screen enclosure | Sprinkler overspray from a well |
| Toilets, sinks, laundry | Drinking well or old plumbing |
| Brief brown tap water | Hydrant flushing nearby |
Hydrant flushing and brown water
During the city's annual free chlorination period, crews flush fire hydrants throughout the city, which can temporarily discolor water. The city's advice: run your faucets until the water clears. If you have a filter, check it afterward, since sediment can load cartridges faster during those weeks.
Why wells stain
Untreated groundwater can carry dissolved iron. When it dries on a surface, the iron oxidizes into orange marks that build with every watering. The Department of Health notes iron bacteria aren't known to cause disease but can cause stains, tastes and odors.
Stains build slowly, so many homeowners don't notice until a wall or sidewalk is badly marked. If you've just bought a home with an irrigation well, testing the well water early tells you whether to plan for treatment, adjust sprinkler aim, or both.
Options
- Irrigation well: iron filtration or oxidation sized to the pump's flow.
- Drinking well: a well water system configured from a full test.
- Plumbing: check your service line at www.dfb.city/waterline and have a plumber look at older pipes if staining is indoors on city water.
For an irrigation-only well, the choice is often between treating the water for iron or accepting some staining and adjusting the sprinklers. Jorge explains both, and what each costs to run, after the test.
Prevent new stains
- Aim sprinklers away from walls, walks, fences and cars.
- Water early or late, following current watering rules.
- Retest the well if new staining appears.
Treatment prevents new stains; existing ones need cleaning.
The stain's color is a clue
Orange-brown usually points to iron. A white crust is usually mineral scale. Jorge tests for iron and pH so treatment matches what's actually in the water.
Test the right water
Jorge can test at the irrigation line if that's where stains start. Call, text or WhatsApp (305) 793-5974.
https://www.deerfield-beach.com/238/Environmental-Services-Engineering
https://www.floridahealth.gov/wp-content/uploads/2025/08/well-water-facts-odor-staining.pdf
https://www.deerfield-beach.com/DocumentCenter/View/18839/WQR-2022-Web-ADA-Final
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist