The honest field guide to home water filtration Free tools · Plain-English guides · No upsells
Water by the Book.
  • Guides

    Fridge Filters

    • All Fridge Filters →
    • Does a Refrigerator Filter Remove PFAS? What NSF P473 Actually Certifies
    • Are Water Filters Interchangeable? Fit, Certification, and the Wrong-Filter Trap
    • Most ‘Compatible’ Refrigerator Filters Don’t Carry the Lead Certification They Replace
    • How Often Should You Change a Refrigerator Water Filter?

    Reverse Osmosis

    • All Reverse Osmosis →
    • Beyond PFAS and Lead: About 1 in 4 US Systems Reported Another Contaminant Over a Limit
    • The 2027 EPA Lead Rule Nearly Triples the Water Systems Over the Line
    • About 1 in 9 US Water Systems Averaged PFOA or PFOS Above the EPA Limit
    • Does a Refrigerator Water Filter Remove Lead? What NSF 53 Actually Means

    Softeners & Whole-House

    • All Softeners & Whole-House →
    • Water Softener Salt Types: Rock vs Solar vs Evaporated
    • How to Get Iron Out of Well Water: Test First, Then Match the Filter
    • Well Water Smells Like Rotten Eggs: What It Is and Which Filter Fixes It
    • What Size Water Softener Do I Need? Sizing by Hardness and Household

    Pitcher & Faucet Filters

    • All Pitcher & Faucet Filters →
    • How to Read Your Water Quality Report (CCR): A Plain-English Guide
    • ZeroWater vs Brita: TDS Numbers vs Certified Reduction
    • Brita Elite vs Standard: What Each Filter Is Actually Certified to Remove
    • Pitcher & Faucet Filters: The Cheapest Way In, Done Right
    Browse all guides →
  • Free Tools
    • Which Filter Fits Find the exact filter your fridge or system takes.
    • Water Watchdog Look up your water system by ZIP -- what it reported, plainly.
    • RO Cost Calculator What reverse osmosis really costs per gallon, with sources.
    • Softener Sizing Calculator Size a softener from hardness and household use.
    • Filter Certification Registry NSF-listed vs manufacturer-claimed, filter by filter.
  • Data Study
  • About
Find your part
  • Guides
    Fridge Filters Does a Refrigerator Filter Remove PFAS? What NSF P473 Actually Certifies Are Water Filters Interchangeable? Fit, Certification, and the Wrong-Filter Trap Most ‘Compatible’ Refrigerator Filters Don’t Carry the Lead Certification They Replace How Often Should You Change a Refrigerator Water Filter? Reverse Osmosis Beyond PFAS and Lead: About 1 in 4 US Systems Reported Another Contaminant Over a Limit The 2027 EPA Lead Rule Nearly Triples the Water Systems Over the Line About 1 in 9 US Water Systems Averaged PFOA or PFOS Above the EPA Limit Does a Refrigerator Water Filter Remove Lead? What NSF 53 Actually Means Softeners & Whole-House Water Softener Salt Types: Rock vs Solar vs Evaporated How to Get Iron Out of Well Water: Test First, Then Match the Filter Well Water Smells Like Rotten Eggs: What It Is and Which Filter Fixes It What Size Water Softener Do I Need? Sizing by Hardness and Household Pitcher & Faucet Filters How to Read Your Water Quality Report (CCR): A Plain-English Guide ZeroWater vs Brita: TDS Numbers vs Certified Reduction Brita Elite vs Standard: What Each Filter Is Actually Certified to Remove Pitcher & Faucet Filters: The Cheapest Way In, Done Right
  • Free Tools
    Which Filter Fits Water Watchdog RO Cost Calculator Softener Sizing Calculator Filter Certification Registry
  • Data Study
  • About
Skip to content

WaterByTheBook

  • Privacy Policy
  • Guides
  • Water Quality by State: PFAS in US Drinking Water
    • Is Your City’s Tap Water Safe? The 100 Largest US Water Systems
    • Alabama Water Quality: 19.3% of Systems Over the PFAS Limit
      • Is Birmingham Tap Water Safe? Birmingham Water Works’s EPA Records
    • Is Alaska Tap Water Safe? PFAS Levels by the EPA Data
    • Arizona Water Quality: 15.8% of Systems Over the PFAS Limit
      • Is Phoenix Tap Water Safe? Phoenix City of’s EPA Records
      • Is Tucson Tap Water Safe? Tucson City of’s EPA Records
      • Is Mesa Tap Water Safe? Mesa City of’s EPA Records
    • Arkansas Water Quality: 0.0% of Systems Over the PFAS Limit
      • Is Little Rock Tap Water Safe? Central Arkansas Water’s EPA Records
    • California Water Quality: 18.7% of Systems Over the PFAS Limit
      • Is Los Angeles Tap Water Safe? Los Angeles Department of Water and Power (LADWP)’s EPA Records
      • Is Oakland Tap Water Safe? East Bay Municipal Utility District (EBMUD)’s EPA Records
      • Is San Diego Tap Water Safe? San Diego, City of’s EPA Records
      • Is San Jose Tap Water Safe? San Jose Water Company’s EPA Records
      • Is San Francisco Tap Water Safe? San Francisco Public Utilities Commission (city distribution)’s EPA Records
      • Eastern Municipal Water District Water Quality: The EPA Records
      • Is Fresno Tap Water Safe? City of Fresno’s EPA Records
      • Is Sacramento Tap Water Safe? City of Sacramento (main system)’s EPA Records
      • Is Long Beach Tap Water Safe? Long Beach Utilities’s EPA Records
      • Is Irvine Tap Water Safe? Irvine Ranch Water District’s EPA Records
      • Is Anaheim Tap Water Safe? City of Anaheim’s EPA Records
      • Is Fremont Tap Water Safe? Alameda County Water District’s EPA Records
    • Colorado Water Quality: 2.8% of Systems Over the PFAS Limit
      • Is Denver Tap Water Safe? Denver Water’s EPA Records
      • Is Aurora Tap Water Safe? Aurora City of’s EPA Records
      • Is Colorado Springs Tap Water Safe? Colorado Springs Utilities’s EPA Records
    • Connecticut Water Quality: 43.5% of Systems Over the PFAS Limit
      • Is New Haven Tap Water Safe? South Central Connecticut Regional Water Authority’s EPA Records
      • Is Hartford Tap Water Safe? Metropolitan District Commission (MDC)’s EPA Records
      • Is Bridgeport Tap Water Safe? Aquarion Water Company of Connecticut (main system)’s EPA Records
    • Delaware Water Quality: 33.3% of Systems Over the PFAS Limit
    • Florida Water Quality: 32.4% of Systems Over the PFAS Limit
      • Is Miami Tap Water Safe? Miami-Dade Water and Sewer Department (main system)’s EPA Records
      • Is Jacksonville Tap Water Safe? JEA (Jacksonville major grid)’s EPA Records
      • Is Tampa Tap Water Safe? City of Tampa Water Department’s EPA Records
      • Is Palm Beach County Tap Water Safe? Palm Beach County Water Utilities’s EPA Records
      • Is Orlando Tap Water Safe? Orlando Utilities Commission’s EPA Records
      • Hillsborough County Public Utilities (South-Central system) Water Quality: The EPA Records
      • Is Pinellas County Tap Water Safe? Pinellas County Utilities’s EPA Records
      • Is St. Petersburg Tap Water Safe? City of St. Petersburg water system’s EPA Records
      • Is Manatee County Tap Water Safe? Manatee County Utilities’s EPA Records
    • Georgia Water Quality: 11.2% of Systems Over the PFAS Limit
      • Is Atlanta Tap Water Safe? City of Atlanta water system’s EPA Records
      • Is Gwinnett County Tap Water Safe? Gwinnett County Department of Water Resources’s EPA Records
      • Is DeKalb County Tap Water Safe? DeKalb County water system’s EPA Records
      • Is Cobb County Tap Water Safe? Cobb County Water System’s EPA Records
      • Fulton County water (North Fulton system) Water Quality: The EPA Records
    • Hawaii Water Quality: 0.0% of Systems Over the PFAS Limit
      • Is Honolulu Tap Water Safe? Honolulu Board of Water Supply (Windward-Pearl Harbor system)’s EPA Records
    • Idaho Water Quality: 3.6% of Systems Over the PFAS Limit
    • Illinois Water Quality: 2.9% of Systems Over the PFAS Limit
      • Is Chicago Tap Water Safe? City of Chicago water system’s EPA Records
    • Indiana Water Quality: 2.8% of Systems Over the PFAS Limit
      • Is Indianapolis Tap Water Safe? Citizens Water (Indianapolis)’s EPA Records
    • Iowa Water Quality: 0.0% of Systems Over the PFAS Limit
    • Kansas Water Quality: 2.2% of Systems Over the PFAS Limit
      • Is Johnson County Tap Water Safe? WaterOne (Water District No. 1 of Johnson County)’s EPA Records
      • Is Wichita Tap Water Safe? Wichita, City of’s EPA Records
    • Kentucky Water Quality: 4.4% of Systems Over the PFAS Limit
      • Is Louisville Tap Water Safe? Louisville Water Company’s EPA Records
      • Is Lexington Tap Water Safe? Kentucky American Water (Lexington)’s EPA Records
    • Louisiana Water Quality: 0.0% of Systems Over the PFAS Limit
      • Is Baton Rouge Tap Water Safe? Baton Rouge Water Company’s EPA Records
    • Maine Water Quality: 5.6% of Systems Over the PFAS Limit
    • Maryland Water Quality: 18.2% of Systems Over the PFAS Limit
      • Washington Suburban Sanitary Commission (WSSC Water) Water Quality: The EPA Records
      • Is Baltimore Tap Water Safe? City of Baltimore’s EPA Records
    • Massachusetts Water Quality: 26.7% of Systems Over the PFAS Limit
      • Is Boston Tap Water Safe? Boston Water and Sewer Commission (MWRA water)’s EPA Records
    • Michigan Water Quality: 1.7% of Systems Over the PFAS Limit
      • Is Detroit Tap Water Safe? Detroit Water and Sewerage Department (GLWA water)’s EPA Records
    • Minnesota Water Quality: 5.6% of Systems Over the PFAS Limit
      • Is Minneapolis Tap Water Safe? City of Minneapolis water system’s EPA Records
      • Is Saint Paul Tap Water Safe? Saint Paul Regional Water Services’s EPA Records
    • Mississippi Water Quality: 1.9% of Systems Over the PFAS Limit
    • Missouri Water Quality: 2.4% of Systems Over the PFAS Limit
      • Missouri American Water (St. Louis and St. Charles counties) Water Quality: The EPA Records
      • Is Kansas City Tap Water Safe? KC Water (Kansas City, Missouri)’s EPA Records
    • Montana Water Quality: 0.0% of Systems Over the PFAS Limit
    • Nebraska Water Quality: 6.2% of Systems Over the PFAS Limit
      • Is Omaha Tap Water Safe? Metropolitan Utilities District (Omaha)’s EPA Records
    • Nevada Water Quality: 6.4% of Systems Over the PFAS Limit
      • Is Las Vegas Tap Water Safe? Las Vegas Valley Water District’s EPA Records
      • Is Reno Tap Water Safe? Truckee Meadows Water Authority’s EPA Records
      • Is North Las Vegas Tap Water Safe? North Las Vegas Utilities’s EPA Records
    • New Hampshire Water Quality: 16.7% of Systems Over the PFAS Limit
    • New Jersey Water Quality: 44.1% of Systems Over the PFAS Limit
      • Is Hackensack Tap Water Safe? Veolia Water New Jersey (Hackensack system)’s EPA Records
      • New Jersey American Water (Raritan) Water Quality: The EPA Records
      • New Jersey American Water (Coastal North) Water Quality: The EPA Records
    • New Mexico Water Quality: 1.6% of Systems Over the PFAS Limit
      • Is Albuquerque Tap Water Safe? Albuquerque Water System’s EPA Records
    • New York Water Quality: 9.9% of Systems Over the PFAS Limit
      • Is New York City Tap Water Safe? New York City water supply system’s EPA Records
      • Is Suffolk County Tap Water Safe? Suffolk County Water Authority’s EPA Records
      • Monroe County Water Authority (MCWA) Water Quality: The EPA Records
      • Onondaga County Water Authority (OCWA) Water Quality: The EPA Records
    • North Carolina Water Quality: 24.4% of Systems Over the PFAS Limit
      • Is Charlotte Tap Water Safe? Charlotte Water’s EPA Records
      • Is Raleigh Tap Water Safe? Raleigh, City of’s EPA Records
      • Is Winston-Salem Tap Water Safe? Winston-Salem, City of’s EPA Records
    • North Dakota Water Quality: 0.0% of Systems Over the PFAS Limit
    • Ohio Water Quality: 10.0% of Systems Over the PFAS Limit
      • Is Cleveland Tap Water Safe? Cleveland Public Water System’s EPA Records
      • Is Columbus Tap Water Safe? Columbus Public Water System’s EPA Records
      • Is Cincinnati Tap Water Safe? Cincinnati Public Water System’s EPA Records
      • Is Toledo Tap Water Safe? Toledo, City of’s EPA Records
    • Oklahoma Water Quality: 5.2% of Systems Over the PFAS Limit
      • Is Oklahoma City Tap Water Safe? City of Oklahoma City water system’s EPA Records
      • Is Tulsa Tap Water Safe? City of Tulsa water system’s EPA Records
    • Oregon Water Quality: 8.5% of Systems Over the PFAS Limit
      • Is Portland Tap Water Safe? Portland Water Bureau’s EPA Records
    • Pennsylvania Water Quality: 24.9% of Systems Over the PFAS Limit
      • Is Philadelphia Tap Water Safe? Philadelphia Water Department’s EPA Records
      • Aqua Pennsylvania (main system) Water Quality: The EPA Records
      • Pennsylvania American Water (Pittsburgh district) Water Quality: The EPA Records
      • Is Pittsburgh Tap Water Safe? Pittsburgh Water and Sewer Authority’s EPA Records
    • Is Rhode Island Tap Water Safe? PFAS Levels by the EPA Data
    • South Carolina Water Quality: 31.3% of Systems Over the PFAS Limit
      • Is Greenville Tap Water Safe? Greenville Water’s EPA Records
    • South Dakota Water Quality: 2.2% of Systems Over the PFAS Limit
    • Tennessee Water Quality: 6.2% of Systems Over the PFAS Limit
      • Is Nashville Tap Water Safe? Metro Water Services (Nashville)’s EPA Records
      • Is Memphis Tap Water Safe? Memphis Light, Gas and Water’s EPA Records
    • Texas Water Quality: 2.5% of Systems Over the PFAS Limit
      • Is Houston Tap Water Safe? City of Houston’s EPA Records
      • Is San Antonio Tap Water Safe? San Antonio Water System’s EPA Records
      • Is Dallas Tap Water Safe? Dallas Water Utility’s EPA Records
      • Is Austin Tap Water Safe? Austin Water’s EPA Records
      • Is Fort Worth Tap Water Safe? City of Fort Worth’s EPA Records
      • Is El Paso Tap Water Safe? El Paso Water Utilities Public Service B’s EPA Records
      • Is Arlington Tap Water Safe? City of Arlington’s EPA Records
    • Utah Water Quality: 1.7% of Systems Over the PFAS Limit
      • Is Salt Lake City Tap Water Safe? Salt Lake City Water System’s EPA Records
    • Vermont Water Quality: 0.0% of Systems Over the PFAS Limit
    • Virginia Water Quality: 7.8% of Systems Over the PFAS Limit
      • Is Fairfax County Tap Water Safe? Fairfax Water (Fairfax County Water Authority)’s EPA Records
      • Is Virginia Beach Tap Water Safe? Virginia Beach, City of’s EPA Records
      • Is Newport News Tap Water Safe? Newport News, City of’s EPA Records
      • Is Chesterfield County Tap Water Safe? Chesterfield County Central Water System’s EPA Records
    • Washington Water Quality: 8.4% of Systems Over the PFAS Limit
      • Is Seattle Tap Water Safe? Seattle Public Utilities’s EPA Records
      • Is Tacoma Tap Water Safe? Tacoma Water’s EPA Records
      • Is Vancouver Tap Water Safe? Vancouver City of’s EPA Records
      • Is Spokane Tap Water Safe? Spokane City of’s EPA Records
    • West Virginia Water Quality: 12.0% of Systems Over the PFAS Limit
    • Wisconsin Water Quality: 9.9% of Systems Over the PFAS Limit
      • Is Milwaukee Tap Water Safe? Milwaukee Waterworks’s EPA Records
    • Is Wyoming Tap Water Safe? PFAS Levels by the EPA Data
    • Is District of Columbia Tap Water Safe? PFAS Levels by the EPA Data
      • Is Washington, DC Tap Water Safe? DC Water’s EPA Records
  • About WaterByTheBook – Our Editorial Process
  • Contact
  • FAQ
  • Terms of Use
  • WaterByTheBook
  • Is My Tap Water Safe? Check Your Water Quality by ZIP Code
  • Which Filter Fits My Refrigerator
  • Filter Certification Registry
  • Reverse Osmosis Cost Calculator
  • Water Softener Sizing Calculator
  • Editorial Policy
  • Affiliate Disclosure
Category

Pillar 1 – Refrigerator Filters

Two similar white refrigerator water filter cartridges standing side by side for comparison on a light kitchen counter

EveryDrop Filter Compatible Alternatives: Which Actually Fit (and Are Certified)

EveryDrop filter compatible alternatives exist for every common Whirlpool, Maytag, KitchenAid, and Amana fridge filter, but two questions decide whether one is…

July 6, 2026 · 9 min read

A refrigerator water filter cartridge on a kitchen counter beside an open refrigerator door showing the filter slot

Which Water Filter Fits My Refrigerator? Find Yours by Model

Finding the right refrigerator water filter by model starts with one number, not a guess. Every fridge filter carries a printed part…

July 6, 2026 · 8 min read

Several refrigerator water filter cartridges of different shapes arranged in a wide row on a clean light surface

Refrigerator & Under-Sink Water Filters: Find the One That Fits

Find the filter that fits your fridge – by model, not by guesswork A single refrigerator line can use different filters across…

July 6, 2026 · 3 min read

← Previous 1 2
© 2026 WaterByTheBook • Built with GeneratePress
Water by the Book.

The honest field guide to home water filtration. Free tools, plain-English guides, and what the data actually says about your water.

Guides

  • Fridge filters
  • Reverse osmosis
  • Softeners & whole-house
  • Pitcher & faucet filters
  • Water quality by state
  • Water quality by city
  • All guides

Free Tools

  • Which Filter Fits
  • Water Watchdog
  • RO Cost Calculator
  • Softener Sizing Calculator
  • Certification Registry

Company

  • Data study
  • About / Our process
  • Contact
  • FAQ
  • Affiliate disclosure

© 2026 WaterByTheBook. All rights reserved. Privacy Terms

As an Amazon Associate we earn from qualifying purchases.