Orange & Rust Stains From Water in Delray Beach

Three irrigation sources, three stain risks

If reclaimed water is available to your property, the city prohibits using drinking water for irrigation. Properties without reclaimed service may use city water or their own well.

How iron makes stains

Dissolved iron is invisible in fresh well water. When it meets air on a wall, sidewalk or pool deck, it oxidizes into the familiar orange-brown stain. The Florida Department of Health also describes iron bacteria, which combine iron and oxygen into rusty, slimy deposits; they can cause yellow, orange, red or brown stains and clog well pumps and sprinkler heads, though they are not commonly known to cause disease.

Indoor stains

• Toilet tanks and sinks: iron from a well, or corrosion in old galvanized pipes.
• Hot water only: the water heater, especially an older tank.
• After a main break or repair: short-lived sediment that clears after flushing the cold tap.

The city's service line inventory found no lead service lines; the private side of the line, from the meter into the house, is the owner's.

Treatment options

• Irrigation well: iron treatment on the irrigation line, or a switch to reclaimed water if it is available to you.
• Drinking well: a well water system configured from the test, often oxidation plus filtration.
• Pipes or heater: a plumbing repair, not a filter.

Pools and pavers

Pool owners sometimes see brown or orange tints after topping off the pool with a garden hose connected to a well, or after heavy overspray from sprinklers. Fill the pool from a city water hose bib if your well water carries iron, and ask your pool professional about sequestering products for iron already in the water. Pavers and coral stone are porous and hold stains, so prevention matters more there than on smooth concrete.

Reducing new stains while you decide

Aim sprinkler heads away from walls, windows and the pool deck, and run zones only on your allowed days and hours. Less overspray means fewer stains. Rust stain removers made for masonry can clean existing marks; test a small spot first.

Get it tested

Jorge tests iron, pH and hardness at your tap and at the well or sprinkler line. If the cause is a pipe, he says so. Call, text or WhatsApp (305) 793-5974. Related: rotten-egg smell, well water in Delray Beach.

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