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Variability of fecal indicator bacteria in flowing and ponded waters in southern California: Implications for bacterial TMDL development and implementation

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Title: Variability of fecal indicator bacteria in flowing and ponded waters in southern California: Implications for bacterial TMDL development and implementation
Authors: He, Li-Ming1,2 liming.he@sdcounty.ca.gov, Lu, Jun2 jlu@hzcnc.com, Shi, Weiyong2 wys57@hzcnc.com
Source: Water Research. Jul2007, Vol. 41 Issue 14, p3132-3140. 9p.
Subjects: Total maximum daily load for water pollutants, Escherichia coli, Water temperature, Bacteria, Microorganisms, Water quality monitoring
Geographic Terms: California
Abstract: Recreational water quality is assessed by using water quality objectives for fecal indicator bacteria (FIB) including total coliform, fecal coliform (or E. coli), and/or Enterococcus. It is required under the Clean Water Act that a TMDL be developed for a bacteria-impaired water body. The development and implementation of bacterial TMDLs has proven challenging and often difficult due to unknown source(s) of FIB. This study found that FIB levels varied significantly in flowing water, ponded water, and associated sediment. FIB levels in isolated ponded water in waterways were significantly higher than in flowing water. Sediment under ponded water contained a great amount of FIB. Furthermore, FIB concentrations in ponded water tended to increase with increasing water temperature and to decrease with increasing water salinity. The result provides the field evidence of survival/growth of FIB in water and sediment under ambient conditions in southern California. A holistic approach including natural sources (e.g., a reference system) should be considered for practical and applicable purposes while developing and implementing bacterial TMDLs for pathogen-impaired waterbodies. [Copyright &y& Elsevier]
Copyright of Water Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Variability of fecal indicator bacteria in flowing and ponded waters in southern California: Implications for bacterial TMDL development and implementation
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  Data: <searchLink fieldCode="AR" term="%22He%2C+Li-Ming%22">He, Li-Ming</searchLink><relatesTo>1,2</relatesTo><i> liming.he@sdcounty.ca.gov</i><br /><searchLink fieldCode="AR" term="%22Lu%2C+Jun%22">Lu, Jun</searchLink><relatesTo>2</relatesTo><i> jlu@hzcnc.com</i><br /><searchLink fieldCode="AR" term="%22Shi%2C+Weiyong%22">Shi, Weiyong</searchLink><relatesTo>2</relatesTo><i> wys57@hzcnc.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Water+Research%22">Water Research</searchLink>. Jul2007, Vol. 41 Issue 14, p3132-3140. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Total+maximum+daily+load+for+water+pollutants%22">Total maximum daily load for water pollutants</searchLink><br /><searchLink fieldCode="DE" term="%22Escherichia+coli%22">Escherichia coli</searchLink><br /><searchLink fieldCode="DE" term="%22Water+temperature%22">Water temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Bacteria%22">Bacteria</searchLink><br /><searchLink fieldCode="DE" term="%22Microorganisms%22">Microorganisms</searchLink><br /><searchLink fieldCode="DE" term="%22Water+quality+monitoring%22">Water quality monitoring</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22California%22">California</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Recreational water quality is assessed by using water quality objectives for fecal indicator bacteria (FIB) including total coliform, fecal coliform (or E. coli), and/or Enterococcus. It is required under the Clean Water Act that a TMDL be developed for a bacteria-impaired water body. The development and implementation of bacterial TMDLs has proven challenging and often difficult due to unknown source(s) of FIB. This study found that FIB levels varied significantly in flowing water, ponded water, and associated sediment. FIB levels in isolated ponded water in waterways were significantly higher than in flowing water. Sediment under ponded water contained a great amount of FIB. Furthermore, FIB concentrations in ponded water tended to increase with increasing water temperature and to decrease with increasing water salinity. The result provides the field evidence of survival/growth of FIB in water and sediment under ambient conditions in southern California. A holistic approach including natural sources (e.g., a reference system) should be considered for practical and applicable purposes while developing and implementing bacterial TMDLs for pathogen-impaired waterbodies. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Water Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.watres.2007.04.014
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      – Code: eng
        Text: English
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      – SubjectFull: Total maximum daily load for water pollutants
        Type: general
      – SubjectFull: Escherichia coli
        Type: general
      – SubjectFull: Water temperature
        Type: general
      – SubjectFull: Bacteria
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      – SubjectFull: Microorganisms
        Type: general
      – SubjectFull: Water quality monitoring
        Type: general
      – SubjectFull: California
        Type: general
    Titles:
      – TitleFull: Variability of fecal indicator bacteria in flowing and ponded waters in southern California: Implications for bacterial TMDL development and implementation
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            NameFull: He, Li-Ming
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            NameFull: Lu, Jun
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              Text: Jul2007
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