Why iron stains and sulfur smells
Iron dissolved in well water oxidizes when it meets air, which is why fresh water looks clear then turns orange in the toilet tank. Hydrogen sulfide gas produces the classic rotten egg odor and is often worst in the hot water lines because heat drives the gas out of solution. Both are common in shallow North Texas wells with iron-bearing sediment.
How oxidizing filters work
The most reliable residential approach is an air-injection or catalytic media filter that oxidizes iron and sulfur then traps the resulting particles in the tank. The filter regenerates by backwashing to the drain. Sizing is based on the parts-per-million iron and sulfur measured in the test. Chemical injection is available for very high loads.
Protecting downstream equipment
Iron and sulfur removal always sits upstream of the softener and any RO or UV stage. Iron fouls softener resin, coats RO membranes, and coats UV sleeves. Getting the order right is a big part of what a proper design does.
Maintenance
Air-injection filters run themselves and need little more than an annual check and periodic media replacement over the life of the system. The installer will lay out the schedule in the written quote.
Frequently asked questions
Will a softener alone handle my iron?+
Only very small amounts. Beyond that, a dedicated iron filter upstream is required to keep the softener resin from fouling and losing capacity.
How do I know if the smell is iron bacteria?+
Iron bacteria produce a slimy buildup along with the odor. If the test shows that pattern, the installer will recommend a shock chlorination followed by ongoing treatment.
Does this work on municipal water?+
Municipal supply in Collin County rarely has meaningful iron. This service targets well homes and edge cases where a private well is blended with city water.
Related services
- Water SoftenersIon-exchange softeners that remove the calcium and magnesium behind hard water damage.
- Well Water TreatmentComplete treatment trains for private well homes in rural Collin County.
- UV Water PurificationUltraviolet disinfection that inactivates bacteria and viruses without adding chemicals.