Why sprinkler stains happen
Groundwater in South Florida often carries dissolved iron. City water is treated; Tamarac's plant runs Biscayne Aquifer water through lime softening and filtration before it reaches you. Irrigation pumped straight from a shallow well skips all of that. When that water sprays onto stucco or concrete, the iron oxidizes and leaves orange streaks that build up season after season.
Indoors: well, bacteria or pipes
- Private well: iron can stain sinks, toilets and laundry.
- Iron bacteria: Florida's Department of Health lists red stains in sinks, swampy or oily smells, and red slimy growth in the toilet tank as signs.
- Old galvanized pipe: rust can flake from inside aging pipes. The City of Tamarac is identifying service line materials and has a program page where you can check your line.
- After hydrant flushing or main work: brief discoloration that clears after running cold water.
What to test
Jorge tests iron at the tap where you see the stain, and at the irrigation or well source if there is one. He also checks pH and hardness, which affect how iron behaves. If your indoor water is on the city system and shows no iron, the stain source is elsewhere.
Treatment options
- Irrigation well: iron treatment on the irrigation line, or switching the irrigation source, depending on the property.
- Drinking well: a well water system configured from the well's test, which may include oxidation and filtration.
- Old pipes: a plumber, not a filter.
For cleaning existing stains, follow the surface manufacturer's guidance; some cleaners damage pavers or paint.
Stains around community lakes
Tamarac neighborhoods are dotted with lakes and canals. Where a community irrigates from a lake or canal instead of a well, stains tend to be lighter but water can carry color and organic matter. Your HOA or property manager can tell you the irrigation source for common areas; for your own lot, check where the sprinkler pump draws from.
Protecting new paint or pavers
If you just repainted or resurfaced, stopping the stain source first saves money: test the irrigation water, adjust sprinkler heads away from walls, and treat the water if needed before cleaning.
Next step
Call, text or WhatsApp (305) 793-5974. Jorge tests the water that is actually staining, explains the cause and recommends only what fits. Related: well water in Tamarac and rotten-egg smells.
https://www.floridahealth.gov/wp-content/uploads/2025/08/well-water-facts-odor-staining.pdf
https://issuu.com/etamarac/docs/2025-tamarac-west_ccr_final
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist