Berkey Shower Filter with Massaging Shower Head - Reduces up to 95% of chlorine https://www.amazon.com/dp/B00BWIWYDK/ref=cm_sw_r_cp_api_glt_fabc_EDFZ7G4CRXPPGKT4DGFN Here is the one he recommends, if not in stock on Amazon check their website. It’s definitely worth getting rid of those contaminations out of your water. You also don’t have to replace the filter that often.
If you can drop the money on it, I suggest the Berkey shower filter head. Its $45 on Amazon but I highly recommend it. I bought it for my old place where the water was a nasty ruddy brown color. Not only did it clear up the water, it even improved the pressure a little.
https://www.amazon.com/Berkey-KDSF-HEAD-Shower-Filter-Massaging/dp/B00BWIWYDK
Dont know for sure since this is not much info about the symptoms but It does sound like it could be a shingles. If that is the case you want to follow a shingles antiviral protocol within MM info. If it is eczema type reactions from the hot water, than it means you have an overburdened liver and also need to be working to cleanse and detox the liver of the stored toxins it has in order to protect you. Either way you would benefit cleansing the liver and getting metals out.
Why? We get problems like you have from a few things. We can get them from catching a virus such as EBV, or Shingles, which combined have over 70 different strains undiscovered. It is very easy to catch one. This virus feeds on NO FOODS. and Toxic heavy metals in order to thrive and proliferate. Over time when the toxins are eaten by the viruses they grow. The goal is to starve the pathogens from the foods and toxins they like. You could also be sensitive to hot water and some water sources due to amount of toxins in some water sources. You can get a shower filter that AW recommends like this one: Berkey Shower filter. That can help get some of the heavy metals and bad stuff out of shower water so it doesn't irritate yours skin as much. If that doesn't help relieve some of the rashes than I would full focus on MM healing info for liver and shingles.
How? Well I suggest getting on the heavy metal detox smoothie. Read more about it here. https://www.medicalmedium.com/blog/heavy-metal-detox-smoothie
AW suggests at least 16oz of CJ to restore broken damaged cells and neurotransmitters. As well as do a deep cleaning on all the problems in the body and help remove toxins and heavy metals that the problem viruses feed on.
I suggest trying out any of the cleanses in cleanse to heal or any other MM book you may have. They will all do well to help heal the liver and cleanse. Do you have any of the MM books at your disposal? If so I would dig into them. They each hold there own in importance and each have so much to learn. Take out NO FOODS. Lower fat down a lot, and you will be cleansing/detoxing. Thats some of the basic keys.
I recommend reading cleanse to heal trouble makers chapter to learn about the NO FOODs and why they are so bad. I think a good cleanse for you from cleanse to heal is to simply try out the HMD cleanse. It is 3 months straight of doing HMD smoothie without really any guidelines for anything else. So its straight forward. And will do a lot of healing work with what ever type of diet you subscribe to.