Volume 89, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



In this large-scale longitudinal study conducted in rural Southern India, we compared a presence/absence hydrogen sulfide (HS) test with quantitative assays for total coliforms and as measures of water quality, health risk, and water supply vulnerability to microbial contamination. None of the three indicators showed a significant association with child diarrhea. The presence of HS in a water sample was associated with higher levels of total coliform species that may have included but that were not restricted to . In addition, we observed a strong relationship between the percent positive HS test results and total coliform levels among water source samples (R = 0.87). The consistent relationships between HS and total coliform levels indicate that presence/absence of HS tests provide a cost-effective option for assessing both the vulnerability of water supplies to microbial contamination and the results of water quality management and risk mitigation efforts.


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  • Received : 05 Feb 2013
  • Accepted : 18 Apr 2013
  • Published online : 07 Aug 2013

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