Question:
I dye fabric in my washing machine. Everything works well except from May through June when the county adds a great deal of chlorine to the water. Does anyone have any suggestions for filtration systems to remove the chlorine that could be attached to the washing machine intake hoses?

Answer: The usual method is a large, expensive ($100s) carbon filter that wears out quickly.

Rather than filtering, consider that it is very cheap to neutralize chlorine with sodium thiosulfate if the resulting compound is acceptable to your process.

What is the problem with a few ppm of chlorine or its compounds? What do you mean by "attached to the ... hoses"? Free chlorine is very reactive so you could take off the hoses and just air them out for some period.

You could use 2.5" x 10" disposable GAC or KDF cartridge filters but one housing (possibly the cartridge too) will have to be for hot water application. They will be heavy when full of water, so they have to be mounted to something substantial and to connect hoses would be a bit difficult unless you have a pair of hoses made up to go from the wall connections to the floor and then the housing and back up to the washer connections. That's not a bad idea if you have room behind/by the washer. It would simplify cartridge replacement by lifting the housing into a bucket to prevent spillage. The other way would be to install them on the plumbing before the hose connections. You won't find hot water housings at retail stores, call a water treatment dealer in your area.