Shower Filter

Pros

• first thing i'd suggest is getting a shower filter. it's a game changer for hard water issues.
• It’s so bad for my skin and hair, I use filter for my shower that I replace every 3 months and it makes a difference
• getting a shower filter definitely helped my skin out.

Cons

• As someone who lives in a place where I can oftentimes smell the chlorine in tap water, I’d go for 99%. However for most people, the law of diminishing returns will apply, especially if there’s a big difference in price, filter longevity...
• Maybe try installing a proper whole-house filter if you're renting long term, or at least get a good shower filter (some do work better than others).
• I enquired about a shower head filter (as I rent so dont want to install a household one) but many people said it was a waste? As a head filter was not enough to actually filter the impurities?
• Most don't actually seem to publish performance data but one I was looking at had data that showed their 98% tanked to 63% in less than 3 months. So I'd end up spending $$ on refills. :(
• The difference between 90% and 99% is probably not gonna be noticeable for your skin or hair - you're already removing the vast majority of chlorine at 90% What matters more is the filter quality and how long it actually maintains that...