Outside vs. inside
| Where | Likely cause | What helps |
|---|---|---|
| Walls, sidewalks, pool deck in a spray pattern | Iron in irrigation well water | Iron treatment on the irrigation line, or re-aiming heads |
| Toilet tanks and sinks, on a well | Iron in the drinking well | Well treatment chosen from the test |
| Brief brown water after street work | Sediment stirred in the mains | Run cold water until clear; call the city if it persists |
| One fixture, older house | Corroding galvanized or steel pipe | A plumber's inspection |
Why irrigation water stains
Shallow groundwater in South Florida can carry dissolved iron. Clear when pumped, it reacts with oxygen and turns into the familiar orange deposit wherever it lands and dries. Miami-Dade's watering rules apply to private wells too: the county's year-round restrictions cover any water source, with lawn watering limited to two days a week by address and outside the 10 a.m. to 4 p.m. window. Less spray on walls means fewer stains.
City water in Hialeah Gardens
Your tap water is Miami-Dade water, lime-softened and filtered at county plants and delivered by the Hialeah Gardens Water and Sewer Department. WASD also adds a phosphorous compound for corrosion control. The city's 2025 report reports that all service lines in its system are non-lead materials. If discolored water from the city persists, call the department at (305) 822-3017.
Treating an irrigation well
- Iron filtration sized for the pump's flow.
- Oxidation plus filtration for higher iron levels.
- Head adjustment so water does not hit walls, screens or the pool deck.
Jorge tests the well water to see how much iron is present and recommends what fits. For a drinking well, see well water treatment and well water systems.
Cleaning stains you already have
Treatment stops new stains; it does not remove old ones. Existing iron stains on stucco, pavers and pool tile usually need a cleaner made for rust, applied according to the surface manufacturer's directions. Test a small hidden spot first, since some cleaners can etch stone or change paint color. Plan the cleaning after the irrigation water is fixed, or the stains come back within weeks.
Get it tested
Call, text or WhatsApp (305) 793-5974. Jorge tests the sprinkler water and the tap, explains what is causing the stain, and tells you whether treatment is worth it.
https://www.miamidade.gov/global/water/conservation/outdoor-water-restrictions.page
https://www.miamidade.gov/resources/water/documents/2025-water-quality-report.pdf
https://www.cityofhialeahgardens.com/departments/water-and-sewer/water-quality-report
https://www.cityofhialeahgardens.com/departments/water-and-sewer
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist