Whole House Water Filtration
Iron, manganese and odour, in the right sequence.
About this serviceGreater Houston
Conroe water varies more than water usually does. Some of it is treated surface supply and some of it comes out of the ground carrying iron, manganese and dissolved sulfur, and those three produce the complaints that fill our Montgomery County schedule: orange staining, black specks, and a smell that arrives with the hot tap and nowhere else.
24/7 dispatch · 7 Conroe ZIP codes · Montgomery County
Hardness gets all the attention in Texas, and around Conroe it is often not the thing causing the trouble. Groundwater here can carry dissolved iron, manganese and hydrogen sulfide, and each one presents differently.
Iron. Clear at the tap, orange in the bowl. Dissolved iron oxidises once it meets air, so the water looks fine coming out and the staining appears afterwards in toilets, tubs, sinks and on white laundry. That delay is diagnostic: staining that develops after standing is iron, not dirt in the line.
Manganese. The same behaviour with a different colour. Black or dark brown specks, grey smears in the toilet, dark flecks that come loose from an aerator. Often present with iron and often blamed on a failing water heater.
Hydrogen sulfide. The rotten-egg smell. Where it appears matters. On both hot and cold taps throughout the house, it is in the supply. On the hot side only, it is being generated inside the water heater, where the sacrificial anode reacts with sulfate-reducing bacteria in the tank. That second case is common here and is not a supply problem at all.
Why it matters mechanically. Iron and manganese coat heat exchangers and foul aerators and cartridges. Sulfide is corrosive to copper and to brass, and it darkens fittings from the inside. None of these are cosmetic-only over a long enough period.
Most failed water treatment in Montgomery County is not bad equipment. It is the right equipment in the wrong sequence, or equipment bought before anything was measured.
Test first, and test for the right things. Hardness, iron, manganese, pH and sulfide. A hardness number alone will send you to a softener, and a softener fed unoxidised iron will foul its resin and stop working properly within a season. That is the single most common mistake we are called out to unpick.
Sediment before anything else. A spin-down or cartridge filter protects everything downstream. Cheap, serviceable, and the stage people leave out.
Iron removal before the softener, not after. Oxidising media or an air-injection system converts dissolved iron into a particle the filter can catch. A softener can handle a small amount of iron incidentally, but it is not an iron filter and treating it as one shortens its life considerably.
Softener next, sized against a measured hardness figure and the household's actual demand.
Then odour and taste. Carbon at the end of the chain, or point of use where drinking water is what matters. Putting carbon first means it clogs with iron and does nothing about odour.
The heater is a separate job. If the smell is hot-side only, treating the whole house achieves nothing. The tank needs flushing, disinfecting and usually a different anode.
This is worth its own section because it is misdiagnosed constantly and the fix is cheap once it is identified correctly.
The mechanism. A standard magnesium anode rod protects the tank by corroding instead of the steel. In water carrying sulfate, and with the bacteria that are ordinarily harmless in it, that reaction produces hydrogen sulfide gas. The result is smell on the hot tap, worse after the house has been empty for a few days.
Why removing the anode is the wrong answer. It stops the smell and starts the tank rusting from the inside. It also usually voids the warranty. We are occasionally asked to do it and we will explain why we would rather not.
What does work. Flush the tank, disinfect it, and fit an aluminium-zinc alloy anode or a powered anode that does not rely on sacrificial corrosion at all. Powered anodes cost more and are the right call in a house that has had the problem twice. If the water sits unused for long periods, raising the thermostat setting for a period also suppresses the bacteria, and mixing valves matter for scald safety if you do that.
Check the recirculation line if there is one. A dead leg full of stagnant hot water will reseed the smell after the tank has been treated, which is why some houses appear to relapse immediately.
Private wells and small systems. Plenty of properties around Conroe are on a private well or a small shared system, which means the pressure tank, the pump control and the well itself are all yours. Short-cycling, pressure that sags in the shower, and a pump that runs on after the tap closes are pressure tank and switch symptoms, not usually pump failure.
Septic where there is no sewer. Our side of that is the building sewer out to the tank and the way drain-field problems present indoors, as slow drainage before anything else.
Second homes and the lake. A property that sits unoccupied develops its own problems: stagnant water, dried trap seals letting sewer gas in, and a water heater sitting warm and unused, which is the exact condition that produces sulfide. Shutting the water off at the main between visits is the simplest protection there is.
The phone is answered around the clock. On a water quality call the first questions are whether the smell or the stain shows on hot, cold or both, and whether you are on a well or a utility supply, because those two answers separate a whole-house problem from a water heater problem before anyone visits.
Montgomery County coverage runs from Conroe out to the lake and the rural fringe, and same-day is the normal outcome, with genuine emergencies moved ahead of scheduled work. Pricing is agreed before anything starts.
FAQ
That is dissolved iron. It stays invisible until it meets air, oxidises and drops out as rust, which is why the staining appears after the water has been standing rather than as it comes out. It is a treatment question, not a pipe cleanliness one.
Usually manganese, which behaves like iron but is darker, and is often present alongside it. If the specks are soft and rubbery rather than gritty, it may instead be a degraded supply hose or a failed washer, which is a different repair.
It is being produced inside the water heater, where the magnesium anode reacts with sulfate-reducing bacteria in the tank. Whole-house treatment will not fix it. The tank needs flushing and disinfecting and usually a different anode.
It works and it costs you the tank. The anode is what corrodes so the steel does not, and removing it typically voids the warranty as well. An aluminium-zinc or powered anode solves the smell without giving up the protection.
Check for a recirculation loop or a long unused hot leg. Stagnant water in a dead leg reseeds the tank, which is why some houses relapse quickly while others never do.
Incidentally and only a little. Fed dissolved iron, softener resin fouls and the unit stops softening properly within a season. Iron removal belongs upstream of the softener, not in it.
Sediment first, then iron removal, then the softener, then carbon for taste and odour. Carbon placed first clogs with iron and achieves nothing, which is the most common installation error we see here.
Short-cycling is usually the pressure tank having lost its air charge, or a pressure switch that needs adjusting or replacing. Both are far cheaper than a pump, and diagnosing the tank first avoids replacing a pump that was fine.
Close the water at the main. That single step prevents the flood scenario, and it also limits the stagnation that produces both smell and dried-out trap seals. Run every fixture briefly when you return.
Same-day is normal across the Conroe ZIP codes and out toward the lake, with genuine emergencies moved ahead of scheduled work. Tell us whether you are on a well or a utility supply when you call.
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About this serviceTalk to someone now
Tell us whether it shows on hot, cold or both, and whether you are on a well. Those two answers usually name the problem before anyone comes out.
Call and describe the problem