How to Clean a Toilet with Muriatic Acid

Published: 05th October 2010
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Muriatic acid is a very strong,corrosive, inorganic acid that is manufactured by absorbing hydrogen chloride in water.It is the same chemical as Hydrochloric acid. Muriatic acid is often used for cleaning brick,concrete, metal,or swimming pools. Plumbing contractors also point to Muriatic Acid as an effective tool in cleaning toilets with high levels of mineral deposit build-up.

Before using Muriatic Acid, make sure your toilet has plastic piping.Muriatic Acid can destroy metal pipes,so unless you have experience using it,try something safer to clean your toilet to avoid creating more serious plumbing problems. Muriatic Acid is also not an option for those with septic systems as it will kill the bacteria which make your system work.

Because Muriatic Acid isn't your typical household plumbing supply item,it's extremely important to adhere to the proper safety procedures before using this dangerous chemical.

As always,when working with chemicals, wear a ventilation mask,protective goggles,long-sleeved clothing,and rubber gloves.Also,make sure your bathroom is as well ventilated as possible by placing a fan in the room and opening all the windows in the house.If the bathroom is equipped with an exhaust fan,make sure to turn it on.

There are a couple of options to go about applying the muriatic acid.One way is by adding it directly to the toilet bowl.The method that will be described in detail here is by applying the acid down the overflow of the flush valve assembly.

First,turn off water and proceed to flush it out of the system.Use a plunger or sponge to remove any excessive water left in the bowl and jet hole.Next, take off the tank cover and place a PLASTIC funnel into the overflow tube.Wearing the proper protection,pour no more than a gallon of Muriatic Acid into the funnel at a steady but careful pace.

After finishing the pour,securely place a sandwich bag over the overflow tube and exit the bathroom,closing the door behind you.Once an hour has passed,it should be safe to return and remove the bag. If your toilet has a fill tube connected to the overflow tube, it will be necessary to replace it.

Proceed to turn on the water and flush the toilet a few times until you are confident that all of the Muriatic Acid has been removed from the bowl.If you decide to use a brush during the cleaning process,make sure to choose one that will be not be destroyed by the acid.

It has been rumored that muriatic acid is strong enough to clear up a clog in a pipe or toilet.This is a myth. The problem isn't the toilet or the pipes;it's what is clogged in the pipe to begin with.If a homeowner's water supply has high levels of lime build-up in the drain lines,any contact with muriatic acid could cause an explosive reaction and result in expensive my resume plumbing repairs.

So,Muriatic Acid can be used to effectively clean toilets riddled with excess dirt and grime.However,safety and caution are key in applying this method.If you have any reservations in using it,don't hesitate to explore other options.

Wesley Holm, President of Thompson Plumbing Heating Cooling, is the author of this article about plumbing contractors,plumbing supply and plumbing problems.Thompson Plumbing Heating & Cooling is a Cincinnati-based plumbing,heating and air conditioning company that offers the best HVAC maintenance and plumbing repairs in the Greater Cincinnati area.

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