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coliform bacteria

British  
/ ˈkɒlɪfɔːm /

plural noun

  1. a large group of bacteria inhabiting the intestinal tract of humans and animals that may cause disease and whose presence in water is an indicator of faecal pollution

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Despite being widely trusted, bottled water was six times more likely to test positive for coliform bacteria than other water sources.

From Science Daily • Jan. 23, 2026

Many of the violations were for unsafe levels of arsenic or coliform bacteria.

From Los Angeles Times • Sep. 15, 2025

In 2009, high levels of fecal coliform, bacteria like E. coli associated with human and animal waste, led the state to halt shellfish harvests on the upper third of the river.

From Salon • Mar. 31, 2023

Scientists from Virginia Tech have told her that the water tests positive for E. coli and coliform bacteria, but Maynard said she would rather boil it than drink her tap water.

From Washington Post • Apr. 16, 2019

Tschannen said the well at her house tested positive for coliform bacteria, so she and her husband were also drinking bottled water.

From Washington Times • May 6, 2017