Contribution of drinking water to the weekly intake of heterotrophic bacteria from diet in the United States

Scott W. Stine, Ian L Pepper, Charles P Gerba

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The goal of this study was to assess the relative contribution of heterotrophic bacteria from various sources in the normal diet of an average person in the United States, due to concerns regarding the potential health implications of such bacteria in household tapwater. A literature search was conducted to determine the concentration of heterotrophic plate count (HPC) bacteria in drinking water, as well as foods common to the American diet. Food items were also obtained in Tucson, AZ to further evaluate the consumption of HPC and total coliform bacteria. This was compared to a recent study on HPC bacteria in tapwater with and without POU devices mounted on the tap in Tucson, AZ households. It was determined that only 0.048-4.5% of the average consumer's total heterotrophic bacteria intake is derived from drinking water. Thus, HPC bacteria in drinking water do not represent a significant exposure of total HPC bacteria in the average diet of consumers in the United States.

Original languageEnglish (US)
Pages (from-to)257-263
Number of pages7
JournalWater Research
Volume39
Issue number1
DOIs
StatePublished - Jan 2005

Fingerprint

Nutrition
Potable water
Bacteria
drinking water
diet
bacterium
Coliform bacteria
coliform bacterium
food
Health

Keywords

  • Heterotrophic plate count
  • Point-of-use device
  • Total coliforms
  • Vegetables

ASJC Scopus subject areas

  • Earth-Surface Processes

Cite this

Contribution of drinking water to the weekly intake of heterotrophic bacteria from diet in the United States. / Stine, Scott W.; Pepper, Ian L; Gerba, Charles P.

In: Water Research, Vol. 39, No. 1, 01.2005, p. 257-263.

Research output: Contribution to journalArticle

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