Orange & Rust Stains From Water in Doral

Three places rust stains come from

1. An irrigation well. UF/IFAS's Florida-Friendly Landscaping program notes that most Florida well water is high in iron, and that iron-rich irrigation water is behind the orange streaks often seen on the sides of buildings. The water can look clear coming out of the ground, then turn orange once it meets air.
2. A private drinking well. Iron in the water you use indoors shows up as reddish stains in sinks, toilets and laundry, and sometimes a metallic taste.
3. Your plumbing. On city water, rust-colored water that clears after running, or that comes only from the hot side, can point to aging galvanized pipe or a water heater. That is a plumbing question rather than a water supply one.

City water vs. well water in Doral

Doral's drinking water comes from Miami-Dade WASD, pumped from the Biscayne Aquifer and treated at plants that soften and filter it before disinfection. If your stains are on outdoor surfaces in the path of your sprinklers, ask first whether the irrigation system runs on WASD water or on a well. Many South Florida properties irrigate from a shallow well, and that water gets no utility treatment.

A quick way to check: look at the stain pattern. Fan shapes on walls, fences and pavers that line up with sprinkler heads point to irrigation water. Stains only in bathrooms and laundry point to indoor water.

Irrigation rules still apply to wells

Miami-Dade County's year-round landscape irrigation rules apply to any water source, including private wells and canals. Odd-numbered addresses may water on Wednesdays and Saturdays, even-numbered addresses on Thursdays and Sundays, and never between 10 a.m. and 4 p.m. Watering less often will not remove iron, but running the system only as needed and aiming heads away from walls and pavers limits how much iron lands on them. During dry periods, such as the February 2026 water shortage warning the City of Doral passed along, conservation requests may also apply.

Options for an iron problem

• Irrigation well: iron treatment for sprinkler water is usually handled at the well, with oxidation and filtration or a feed system configured from the iron level. The right setup depends on how much iron is present and how much water the sprinklers use.
• Drinking well: a well water system configured from the well's test. UF/IFAS lists softeners, oxidizing filters and combined chlorination and filtration as common options, each suited to different iron levels.
• Old pipes or heater: a plumber, not a filter.

Existing stains need a cleaning product made for rust on that surface; treatment only prevents new ones.

What to test before you buy anything

Iron treatment that is undersized or wrong for the water stops working quickly. Before choosing equipment, you want to know iron, pH and hardness, and whether a sulfur smell is also present, since iron and hydrogen sulfide often travel together in well water. The Florida Department of Health notes that iron bacteria can cause red, slimy deposits and staining as well.

Jorge tests your water free at your Doral home, tells you which source is staining what, and recommends treatment only when it fits. Call, text or WhatsApp (305) 793-5974.

Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist