If your tap water has tasted a little "off" lately - more chlorine-forward, slightly musty, or just not as crisp as it did in spring - you're not imagining it. Summer genuinely changes what comes out of your tap, and there's real science behind it.
Why Summer Hits Your Water Supply Differently
1. Warmer water holds onto chlorine differently
Water treatment plants often increase chlorine dosing in summer because warm water is a better breeding ground for bacteria and algae. That extra chlorine is what gives tap water its sharper, "swimming pool" taste during the hottest months.
2. Algae blooms affect taste and smell
Reservoirs and rivers heat up in summer, which can trigger algae growth. Even trace amounts of algae byproducts (geosmin and MIB, if you want the technical names) create that musty, earthy taste and smell some people notice - completely harmless, but not pleasant.
3. Pipes get warmer too
Water sitting in warm pipes, especially in older buildings or homes with visible outdoor plumbing, picks up more dissolved minerals and sediment simply because heat speeds up those interactions.
4. Higher water demand strains infrastructure
More people running sprinklers, filling pools, and showering more often means treatment plants are working harder and turning over water faster - sometimes with less time for full mineral settling.
None of this makes summer tap water unsafe. But it does explain why so many people notice a taste difference this time of year.
The Fix: Filtering at the Point of Use
Since these seasonal changes happen upstream - at the treatment plant and in the pipes - the most reliable fix is filtering the water right where you use it.
For drinking and cooking water: The Watery uses reverse osmosis filtration to strip out chlorine, sediment, and the compounds responsible for that musty summer taste, giving you consistently clean, crisp water regardless of what's happening at the treatment plant.
For showers: Chlorine doesn't just affect taste - it's also one of the biggest culprits behind dry skin and dull hair in summer, since hotter showers open pores and hair cuticles, letting more chlorine in. This is where our shower filter head comes in: it filters out chlorine and heavy metals right at the tap, so your daily shower doesn't undo what your skincare and haircare routine is trying to do. It's a simple swap - no plumber needed - and pairs naturally with an RO setup for filtered water from the kitchen to the bathroom.
Tap water tasting different in summer isn't just in your head - it's chlorine dosing, algae, warm pipes, and infrastructure strain all showing up at once. The good news: a good filtration setup at home handles all of it, so the season doesn't have to change how your water tastes (or how your skin and hair feel).
Curious which filtration setup makes sense for your home? Explore The Watery or check out our shower filter head to cover both ends of the tap.
