Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessing Defined‐Substrate Technology for Meeting Monitoring Requirements of the Total Coliform Rule
The Illinois Environmental Protection Agency is responsible for drinking water analyses for approximately 2,200 public water utilities serving more than half the state's population. The recently developed defined‐substrate technology (DST, commercially known as Colilert), which simultaneously enumerates both total coliforms and Escherichia coli and does not require confirmatory tests, was compared in this geographic area with the membrane filter (MF) procedure from Standard Methods. Overall, there were no differences between MF and DST. Subcultures of positive DST tubes demonstrated this technology's specificity. Yellow (total coliform–positive) tubes yielded species consistent with total coliforms, and fluorescent (E. coli–positive) tubes contained E. coli. The DST system was easy to use and is compatible with new drinking water regulations that will increase monitoring and resampling requirements, mandate a fecal indicator (either an E. coli or fecal coliform analysis), and use a maximum contaminant level in the frequency‐of‐occurrence mode. DST also has several important advantages for state regulators, including its ability to help utilities comply with new transportation and storage requirements.
Assessing Defined‐Substrate Technology for Meeting Monitoring Requirements of the Total Coliform Rule
The Illinois Environmental Protection Agency is responsible for drinking water analyses for approximately 2,200 public water utilities serving more than half the state's population. The recently developed defined‐substrate technology (DST, commercially known as Colilert), which simultaneously enumerates both total coliforms and Escherichia coli and does not require confirmatory tests, was compared in this geographic area with the membrane filter (MF) procedure from Standard Methods. Overall, there were no differences between MF and DST. Subcultures of positive DST tubes demonstrated this technology's specificity. Yellow (total coliform–positive) tubes yielded species consistent with total coliforms, and fluorescent (E. coli–positive) tubes contained E. coli. The DST system was easy to use and is compatible with new drinking water regulations that will increase monitoring and resampling requirements, mandate a fecal indicator (either an E. coli or fecal coliform analysis), and use a maximum contaminant level in the frequency‐of‐occurrence mode. DST also has several important advantages for state regulators, including its ability to help utilities comply with new transportation and storage requirements.
Assessing Defined‐Substrate Technology for Meeting Monitoring Requirements of the Total Coliform Rule
Katamay, M. Michael (Autor:in)
Journal ‐ American Water Works Association ; 82 ; 83-87
01.09.1990
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2006
Revised Total Coliform Rule (RTCR) ``Exploring the New Requirements''
| British Library Conference Proceedings | 2014
Total Coliform Rule Brain Teaser
| Wiley | 2009
Reconsidering the Total Coliform Rule
| Wiley | 2000
Total Coliform Rule Complaince Analysis
| British Library Conference Proceedings | 2005