Need Help On What Chemical To Use.

[ALBERT]

HI

I NEED HELP ON WHAT TYPE OF CHEMICAL CAN REMOVE RUST/BROWN STAINS THAT COMES THROUGH THEIR WATER FAUCETS. THE AREA THAT I AM TALKING ABOUT IS A CAMPING/FARM AREA. THEY HAVE BATHROOMS THAT THEY WANT TO GET PRESSURE WASHED. THE WATER OUT THERE LOOKS VERY DIRTY THOUGH AND THE AREAS THEY HAVE TRYED TO RINSE OFF WITH THE WATER ALL LOOK RUSTED(SIDEWALKS AND WALKWAYS,CONCRETE),THESE AREAS ACTUALLY LOOK LIKE THE SAME COLOR OF THE WATER ACTUALLY. I WAS TOLD IT WAS FROM THE ENVIRONMENT MAYBE MINERALS IN THE WATER OR SOMETHING BUT IT LOOKS LIKE RUST ITS A BROWN RUSTY COLOR AND THEY DON'T HAVE FILTERS ON THEIR WATER SYSTEM I WOULD LIKE TO KNOW WHAT WOULD WORK IN ORDER TO CLEAN THE SIDEWALKS, WALKWAYS , CONCRETE.

 

[Scott Stone]

Acid will remove rust. There are a bunch of different acids that are available for this process. Most use Muriatic acid, but it helps if there is a rust inhibitor in the acid that you use.

Scott

 

[Tim Smith]

Oxalic Acid works well

Be carefull with Muratic Acid.

 

[Mike@Sunbritesupply]

I agree with Tim. Oxalic is a good way to go. Muratic can/will take the cream off the concrete and really should only be used when prepping to paint or re-surface concrete. If you don't know where to locate oxalic acid, it can be found in wood brighterners.(one source) the Oxalic may leave the concrete a little on the smokey-grey side. Bleaching when through can help whiten.