geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Pollution indicator bacteria associated with municipal raw and drinking water supplies


, : Pollution indicator bacteria associated with municipal raw and drinking water supplies. Canadian Journal of Microbiology 23(4): 465-470

A total of 3819 bacterial cultures isolated from municipal water samples were identified using a combination of Enterotubes and confirmatory media. Frequency distributions for the different genera or groups of bacteria were similar for raw water and drinking water isolations, except for Escherichia organisms which doubled their frequency in raw water. Differences between the membrane filter (MF) and presence-absence (P-A) test with regard to types of organisms isolated were limited to Klebsiella organisms which were preferentially cultured from MF plates. Members of the genus Enterobacter were isolated more than twice as frequently as any of the other coliform genera dealt with in this study. Aeromonas organisms were detected almost as often as such individual genera as Escherichia, Citrobacter or Klebsiella. Although non-lactose fermenting colonies (false-negatives) of the coliform genera would not be detected by the MF technique, their lack of detection would likely be offset by the Aeromonas colonies (false-positives). At least 25% of the coliform isolates were either anaerogenic or non-lactose fermenters and would therefore go undetected by the most probable number (MPN) technique.

US$19.90

PMID: 324588

DOI: 10.1139/m77-068


Other references

Prasad, Chandreshwar, 2006: Influence of the leaf extract, biopesticide and oil of neem (Azadirachta indica A-Juss.) on turnip (Brassica rapa L.) V. cytological attributes. Leaf extract of neem (Azadirachta indica A. Juss) and azadirachtin-based biopesticide cause a gradual decrease in mean number of chromocentres/nucleus (cfr) and pollen viability of turnip (Brassica rapa L.) from lower to higher concentrations in...

Ubrig, B.; Truß, M.C.; Sökeland, Jürgen.B., 2014: On the occasion of Prof. Dr. med. Dr. h.c. Jürgen B. Sökeland's 80th birthday. Der Urologe. Ausg. A 52(11): 1594-1595

Weiss, S.L.; Alexander, J.; Agus, M.S.D., 2011: Extreme stress hyperglycemia during acute illness in a pediatric emergency department. Although mild stress hyperglycemia in pediatric illness is common, severe hyperglycemic responses (≥300 mg/dL [16.7 mmol/L]) to stress are unusual. We sought to determine the incidence and course of extreme stress hyperglycemia (ESH) in acute pe...

Kang, H.; Lee, S.; Ito, E.; Hara, M.; Noh, J., 2012: An alkyl spacer effect on the structure of 4-fluorobenzenethiol and 4-fluorobenzenemethanethiol self-assembled monolayers on Au(111). Self-assembled monolayers (SAMs) formed by the adsorption of 4-fluorobenzenethiol (4-FBT) and 4-fluorobenzenemethanethiol (4-FBMT) on Au(111) were examined by scanning tunneling microscopy (STM) to understand the effect of a flexible methylene spa...

Olmsted, E.B.esemeier, K., 1989: Living snow fences. Proceedings of the Society of American Foresters National Convention: 38-239

Hiyama, A.; Arai, F.; Sakai, D.; Yokoyama, K.; Mochida, J., 2013: The effects of oxygen tension and antiaging factor Klotho on Wnt signaling in nucleus pulposus cells. The goals of this study were to examine the oxemic regulation of Wnt signaling to explore whether Wnt signaling accelerates the age-related degeneration of nucleus pulposus cells, and if so, to define the mechanism underlying this effect. We inves...

Strangmann, K.Ehler, I.; Ludwig, W., 1954: Studies on components of laterality in man with special reference to the venous laterality. Zeitschrift für Menschliche Vererbungs- und Konstitutionslehre 32(3): 219-258

Goerisch H.; Lingens F., 1974: Chorismate mutase from streptomyces purification properties and subunit structure of the enzyme from streptomyces aureofaciens strain tue 24. Biochemistry 13(18): 3790-3794

Veevers J.J.; Conaghan P.J.; Shaw S.E., 1994: Turning point in Pangean environmental history at the Permian/ Triassic (P/ Tr) boundary. Special Paper - Geological Society of America 288: 187-196

Ayromlooi, J., 1985: Hemodynamic and acid-base effects of meperidine on unanesthetized pregnant sheep and fetus. Meperidine hydrochloride (MHCl) is one of the most widely used analgesics today. Its effect upon maternal and fetal sheep hemodynamics and acid base were investigated in 13 experiments following maternal IV administration of 100 mg (approximately...