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Table 2 Primary Drinking Water and Secondary Water Quality Test Results, Guatemala, September, 2016

From: An assessment of household water quality among Peace Corps volunteers in Guatemala

Type of water sample Number (%) Samples Containing
< 0.2 mg/L FCR
Number (%) Samples Containing E. coli Number (%) Samples Containing
Total Coliforms
Primary drinking water (n = 37) 36 (97%) 0 (0%) 25 (68%)
Tambo (n = 23, 62%) 23 (100%) 0 (0%) 17 (74%)
 Single-use sealed bags of purified water (n = 2, 5%) 2 (100%) 0 (0%) 0 (0%)
 Water filtered and bottled at a location outside the PCV’s household (n = 2, 5%) 2 (100%) 0 (0%) 2 (100%)
 Piped water filtered and stored in the household (n = 6, 16%) 6 (100%) 0 (0%) 4 (67%)
 Piped water boiled and stored in the household (n = 2, 5%) 2 (100%) 0 (0%) 1 (50%)
 Piped water boiled then filtered and stored in the household (n = 1, 3%) 1 (100%) 0 (0%) 0 (0%)
 Piped water treated with chlorine and stored in the household (n = 1, 3%) 0 (0%) 0 (0%) 1 (100%)*
Secondary water (n = 43) 40 (93%) 15 (35%) 31 (72%)
 Piped water collected directly from the tap (n = 34, 79%) 31 (91%) 14 (41%) 25 (74%)
 Protected dug well water stored in a rooftop tank, no additional treatment (n = 1, 2%) 1 (100%) 1 (100%) 1 (100%)
 Tanker truck and rain water mix stored in a pila, no additional treatment (n = 1, 2%) 1 (100%) 0 (0%) 1 (100%)
 Single-use sealed bags of purified water (n = 1, 2%) 1 (100%) 0 (0%) 0 (0%)
 Water filtered and bottled at a location outside the PCV’s household (n = 1, 2%) 1 (100%) 0 (0%) 1 (100%)
 Piped water filtered and stored in the household (n = 3, 7%) 3 (100%) 0 (0%) 2 (67%)
 Piped water boiled and stored in the household (n = 2, 5%) 2 (100%) 0 (0%) 1 (50%)
Total (n = 80) 76 (95%) 15 (19%) 56 (70%)
  1. *Occurrence of total coliforms in water with a free chlorine residual suggests contamination of sample post-collection (after chlorine had been quenched) or survival of microbes due to protection in biofilms that had sloughed off from distribution system pipes or were present on storage container surfaces [19]