Outside: follow the sprinkler pattern
If the stains line up with where sprinklers hit, the irrigation water is the cause. Dissolved iron stays invisible until the spray dries on stucco or concrete and the iron oxidizes. Each watering cycle adds a little more. Broward County's permanent twice-a-week watering schedule limits how often that happens, but it does not stop it.
The City of Weston irrigates its own landscaping from canals and lakes, not drinking water. If your community or home does the same, that source water is what needs testing.
Inside: water heater and plumbing
Weston's tap water is membrane-softened at Sunrise's Sawgrass plant, and the city's 2025 service line survey identified no lead or galvanized lines requiring replacement in its system. Rust inside a home is more likely to come from a water heater, old fixtures or the plumbing on your side of the meter. The city's Common Issues page says brownish water that is mainly hot points to the heater, and to change filters if you have a system.
Private wells
A private drinking well with iron can stain toilets, sinks and laundry. Iron often travels with hydrogen sulfide and hardness, so treatment is chosen from a full test. See well water treatment in Weston.
Treatment options
- Irrigation source: iron treatment on the irrigation line, or redirecting heads away from walls and pavers. Some homeowners use a rust-preventive feed designed for irrigation; ask about its effects on plants and surfaces.
- Drinking well: oxidation and filtration, sometimes with softening, configured from the well's test.
- City water inside: confirm with a test, then look at the heater and plumbing.
EPA treats iron as a secondary standard, a guideline for staining and taste rather than a health limit.
Cleaning what is already there
Treatment prevents new stains; it does not remove old ones. Rust stains on stucco, pavers and pool coping usually need a cleaner made for rust, applied per the label and tested on a small area first. Check with your HOA if the stained surface is shared or under community maintenance.
Test the right water
Jorge tests iron, pH and hardness at the source you point to: a sprinkler zone, a well or the kitchen tap. Call, text or WhatsApp (305) 793-5974.
https://www.westonfl.org/home/showpublisheddocument/8913/639168633628230000
https://www.westonfl.org/government/public-works-and-utilities/water-and-sewer-utility/common-issues
https://www.epa.gov/sdwa/secondary-drinking-water-standards-guidance-nuisance-chemicals
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist