Three sources, three different fixes
| Where you see it | Likely source |
|---|---|
| Stucco walls, sidewalks, curbs and fences, in the sprinkler pattern | Private irrigation well with iron |
| Toilets, sinks and laundry, on a home with a private drinking well | Iron in the well water |
| One fixture or after the water sits, on city water | Corroding pipe, fitting or water heater |
Why irrigation wells stain
Iron dissolves in groundwater when there is little oxygen. When sprinklers spray that water into the air and onto surfaces, the iron oxidizes and leaves orange deposits. The University of Florida IFAS notes that staining can start at as little as 0.3 parts per million of iron or manganese. The stain builds up with every watering cycle, which is why it gets worse over a season.
If your Boca Raton home is one of the 1,600-plus connected to the city's IRIS reclaimed water system, your irrigation is coming from the Glades Road reclamation facility, not a well. Stains from a different source, like a neighbor's sprinkler hitting your wall, are worth checking too.
Treatment options for irrigation wells
- Iron filtration on the irrigation line, sized to the well's flow rate and iron level.
- Oxidation plus filtration, which turns dissolved iron into particles that can be caught before the sprinkler heads.
- Adjusting sprinkler heads so they do not hit walls and walks. It sounds simple, and it cuts new staining.
- Switching source, where reclaimed or city water is available and allowed for irrigation.
Existing stains need a cleaner made for rust; a filter prevents new ones but does not remove old ones.
Drinking wells and indoor stains
If your house runs on a private well and you see orange in toilets and laundry, the same iron is in your household water. Treatment is configured from that well's test, usually together with hardness and any sulfur smell. See well water treatment in Boca Raton and well water systems.
On city water, isolated rust usually points to plumbing. The city's report notes that home plumbing materials are outside its control, so a plumber is the right call for a corroding line.
What to test
- Iron and manganese, at the well or the sprinkler line.
- pH and hardness, which affect how iron filtration performs.
- Flow rate from the pump, to size equipment.
- Hydrogen sulfide, if there is also an odor.
Call, text or WhatsApp Jorge at (305) 793-5974 for a free in-home test. He will check the irrigation water as well as the house.
https://ask.ifas.ufl.edu/publication/SS440
https://www.myboca.us/445/Reclaimed-Water
https://www.myboca.us/DocumentCenter/View/43632/2025-Annual-Water-Quality-Report-
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist