Cleaning Irrigation Water Stains From Concrete
 

I've tried 30 second cleaner and vinegar. What works? Pool Chlorine?

SNO Cap (I purchased at ACE hardware) works great, just mix, spray on wait about 10 minutes and spray water to clean off.

I been here for 7 years and have no staining from irrigation anywhere, do they use different water in different sections?

Mostly north of 466 potable water and south pond water. If you have two separate water meters you are on reclaimed water. I imagine the reclaimed water leaving the stains?

Thanks for info. I can’t find SNO Cap on their website, can you give me more info on this product?

It's called snow cap rust remover.

I will give it a try. Yes it's reclaimed water. It darkens the concrete with the overspray and won't scrub off either. It doesn't appear to be rust because I've tried CLR on it.

The stains you are seeing is rust. I use this product. No Mixing and works great. Spray it on the stains, wait a few minutes and hose it off. Easy Peazy. Find it at Lowes.
https://www.lowes.com/pd/Super-Iron-...leaner/3578096

When I fertilize my bushes, flowers, and peppers in pots I sometimes accidentally drop some fertilizer which leaves rust stain. I use lemon cut in half rub on stain and comes right up.

Be sure to rinse it off fairly quickly. Mixed at recommended strength, and left wet on the wall for more than a couple of minutes, it can bleach the color on some homes.

most likely it’s from the iron in the fertilizer they used. Orange spots?

Are all these cleaning products, work and safe on painted driveway.

Hue Redish
 

If it’s a reddish color, it’s actually old construction dirt mixed with water and affixed to your concrete. A pressure washer removes it. Don’t use CLR if the cement is only a couple of years old. The chemicals can actually etch your cement.

Dark colors can be from roof runoff and your shingles. Again, a pressure washer does a good job.

Can you use this in a power washer?

Just water, no chemicals needed.