Study Claiming Portland Is Cleanest Metro

A recent carpet cleaning company’s report indicates that Portland is the “cleanest metro” area in the United States.

The study came out earlier this month (April 2025) from Oxi Fresh. Here is more about Portland’s being at the top of the list:

The study of the day today comes from Oxi Fresh. According to a press release from the carpet cleaning company, “The study evaluated 35 U.S. metro areas using public data from the Census Bureau and other government sources.”

Using seven factors – population density, rodent and cockroach prevalence, vandalism, litter, air quality, and tap water quality – each metro was assigned a letter grade.

And Portland, Oregon’s biggest city and crown jewel, came out on top.

— https://www.oregonlive.com/trending/2025/04/complain-all-you-want-but-a-new-report-calls-this-oregon-city-the-cleanest-metro-in-the-country.html

Here is some more directly from the study:

The Seven Cleanliness Factors Used to Grade Each Metro Area

  • Population Density: The number of people per square mile.
  • Rodents: The percentage of housing units with signs of mice, rats, or other rodents inside the home in the past 12 months.
  • Cockroaches: The percentage of housing units with signs of cockroaches inside the home in the past 12 months.
  • Vandalism: The percentage of homes without vandalized or abandoned buildings within a half-block radius.
  • Litter: The percentage of homes without litter, trash, or junk on the streets or properties within a half-block radius.
  • Air Quality: The number of days in 2024 that the daily Air Quality Index (AQI) values were classified as ‘Good’ (values of 50 AQI or less) for all AQI pollutants: CO, NO₂, Ozone, PM10, and PM2.5.
  • Tap Water Quality: The number of different types of contaminants detected in the metro area’s drinking water that exceeded the Environmental Working Group (EWG) health guidelines.

— https://www.oxifresh.com/news/the-cleanest-cities-in-the-united-states-a-2025-study/

If you need any help with rodent control or rodent removal in the Portland area then you are welcome to call us, email us, or book an appointment online.

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