Woder Science

Culligan vs Brita: Which Water Filter Is Right for You?

Brita and Culligan usually appeal to different buyers. A Brita pitcher is sold in regular stores, and you can start using it the same day. With Culligan, the first step is usually a call to a local dealer. In this Culligan vs Brita comparison we look at what your water needs, how much you plan […]

Aquasana vs Culligan: Which Under-Sink Water Filter Is Worth It?

Aquasana and Culligan both sell under-sink filters, but you buy and install them in different ways. Aquasana sells online, and most people fit the system themselves. Culligan works through local dealers, who usually come to your home and install it. When we compare Aquasana vs Culligan below, we look at what each filter removes and […]

Types of Water Filters: Full Guide

Filters fall into two groups. By technology, you’ve got sediment, carbon, KDF, resin softening, RO, UV, ceramic and specialty media. By system, there are pitchers, faucet mounts, countertop units, under-sink and inline filters, fridge cartridges and whole-home setups. You can compare real examples in our water filtration systems catalog. Key takeaways: Technology decides what a […]

How Does a Water Filter Work

A filter cleans in one or more of four ways. It blocks particles, traps chemicals on a porous surface like carbon, swaps unwanted ions for harmless ones, or forces flow through a membrane. Most home units combine two or more of these. See them in action in our water filtration systems catalog. Key takeaways: Carbon […]

Is Tap Water Safe to Drink?

In most of the US, yes. Public systems are tested regularly and usually meet EPA standards. The real risks come from lead in older pipes, PFAS, private wells, and boil notices after main breaks. A certified filter at the kitchen tap, like our lead removal under-sink filters, adds protection where it counts. Key takeaways: Most […]

Best Water Filter for Well Water

No single option is best for every well. Match the equipment to your lab results: a sediment filter for grit, an iron filter for stains, a softener for scale, UV for bacteria, and a certified drinking filter at the kitchen sink. Browse our under-sink sediment filters for that last step. Key takeaways: Your lab report […]

Well Water Filtration for Homes: What a Full System Includes

A complete setup for a private well usually includes a yearly lab test, a sediment stage, iron and sulfur treatment, a softener for hardness, carbon for chemicals and taste, UV for bacteria, and a drinking filter at the kitchen sink. You only need the stages your test calls for. For that last stage, see our […]

How to Choose a Water Filter: Complete Buyer’s Guide

Test your tap first, list what you want to reduce, pick a format that fits your kitchen, then confirm independent certification and long-term cartridge cost. For most families, an under-sink system hits the best balance of performance and price. Compare our under-sink water filter systems or try the Filter Wizard on our site. Key takeaways: […]

TDS Meter: What It Is and Do You Need One

This pocket tester estimates how much dissolved material, mostly minerals and salts, is in a glass. It’s handy for comparing sources and spotting changes, but it can’t detect lead, PFAS or bacteria. For safety, rely on a lab test and a certified filter, like the ones in our water filtration systems catalog. Key takeaways: Most […]

Best Whole House Water Filter in 2026

The right whole-home system is the one that matches your test results. Carbon handles chlorine, catalytic carbon handles chloramine, sediment cartridges catch grit, and wells usually need several stages. Expect roughly $1,000 to $4,000 installed. For drinking and cooking, lots of homes also add a certified unit at the kitchen sink, like our under-sink water […]