If you rent your home, you can't install an under-sink reverse osmosis system or a whole-house softener. But you can still significantly improve your water quality. Here are your best options, from cheapest to most effective.
Pitcher filters ($20–$50)
The simplest option. Fill it, wait, pour. Modern pitcher filters with NSF 53 certification remove lead, chlorine, and some organic contaminants. Limitations: slow, small capacity, and standard pitchers don't remove PFAS, fluoride, or most dissolved minerals. Filter replacement: every 2 months ($6–12 each).
Best pitchers: Look for NSF 53 (contaminant reduction) and/or NSF P473 (PFAS removal) certification. Some newer models specifically target PFAS.
Faucet-mounted filters ($20–$40)
Attach directly to your kitchen faucet - no tools or permanent modifications needed. Similar performance to pitchers but more convenient since you get filtered water on demand. Most use activated carbon and remove chlorine, lead, and some VOCs. Filter replacement: every 3 months ($10–15 each).
Downsides: doesn't fit all faucet types (check compatibility), can slow water flow, and the plastic housing can feel flimsy.
Countertop gravity filters ($60–$350)
Stainless steel units that sit on your counter and use gravity to pull water through filter elements. No connection to plumbing needed. The best models (like Berkey-style systems) can remove bacteria, lead, chlorine, some PFAS, and many other contaminants. Large capacity (2–3 gallons). Filter elements last 6–12 months.
These are the sweet spot for renters who want serious filtration without installation. Just fill the top chamber and let gravity do the work.
Countertop RO systems ($150–$400)
Portable reverse osmosis systems that sit on your countertop and connect to the faucet with a quick-disconnect fitting (removable, no permanent changes). These provide the same quality filtration as under-sink RO - removing virtually everything including PFAS, lead, fluoride, arsenic, and dissolved minerals.
Downsides: they're slow (takes 10–15 minutes to fill a gallon), waste water (though newer models are more efficient), and take up counter space. But for renters concerned about serious contaminants, this is the most thorough option available without installation.
Shower filters ($15–$40)
If your main complaint is dry skin, dry hair, or chlorine smell in the shower, a shower head filter is a simple fix. These screw on in place of your existing shower head and use KDF or vitamin C media to neutralize chlorine. They won't soften hard water, but they can make a noticeable difference in how your skin and hair feel.
First: know what you're filtering
Check your water on ClearWater before buying anything. If your water's main issue is chlorine taste, a $25 pitcher handles that. If you have lead or PFAS concerns, you need something more capable. Don't overspend on problems you don't have.