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Table 1

Tap water quality data

Parameters (units)SourcenConcentration
LowestMeanHighest
Iron (mg L−1Hlawga 0.04 0.07 0.18 
Gyobyu 0.05 0.07 0.10 
Gyobyu + tube well 0.03 0.32 0.88 
Hardness (mg L−1Hlawga 20 24 30 
Gyobyu 21 31 47 
Gyobyu + tube well 102 112 135 
DOC (mg L−1Hlawga 1.97 2.58 3.07 
Gyobyu 1.78 1.97 2.17 
Gyobyu + tube well 0.73 1.18 1.65 
pH Hlawga 6.9 7.5 7.8 
Gyobyu 7.1 7.4 7.7 
Gyobyu + tube well 6.8 7.2 7.4 
Free chlorine (mg L−1Hlawga 0.07 0.09 0.14 
Gyobyu 0.07 0.08 0.10 
Gyobyu + tube well <0.01 <0.01 <0.01 
Total chlorine (mg L−1Hlawga 0.09 0.13 0.20 
Gyobyu 0.12 0.14 0.18 
Gyobyu + tube well <0.01 0.01 0.02 
HPC (CFU mL−1Hlawga 1,800 8,000 17,000 
Gyobyu 900 3,400 6,500 
Gyobyu + tube well 350 1,500 3,600 
E. coli (CFU 100 mL−1Hlawga N/A TNTC 
Gyobyu 
Gyobyu + tube well 32 
Coliforms (CFU 100 mL−1Hlawga 182 N/A TNTC 
Gyobyu 120 172 222 
Gyobyu + tube well N/A TNTC 
Parameters (units)SourcenConcentration
LowestMeanHighest
Iron (mg L−1Hlawga 0.04 0.07 0.18 
Gyobyu 0.05 0.07 0.10 
Gyobyu + tube well 0.03 0.32 0.88 
Hardness (mg L−1Hlawga 20 24 30 
Gyobyu 21 31 47 
Gyobyu + tube well 102 112 135 
DOC (mg L−1Hlawga 1.97 2.58 3.07 
Gyobyu 1.78 1.97 2.17 
Gyobyu + tube well 0.73 1.18 1.65 
pH Hlawga 6.9 7.5 7.8 
Gyobyu 7.1 7.4 7.7 
Gyobyu + tube well 6.8 7.2 7.4 
Free chlorine (mg L−1Hlawga 0.07 0.09 0.14 
Gyobyu 0.07 0.08 0.10 
Gyobyu + tube well <0.01 <0.01 <0.01 
Total chlorine (mg L−1Hlawga 0.09 0.13 0.20 
Gyobyu 0.12 0.14 0.18 
Gyobyu + tube well <0.01 0.01 0.02 
HPC (CFU mL−1Hlawga 1,800 8,000 17,000 
Gyobyu 900 3,400 6,500 
Gyobyu + tube well 350 1,500 3,600 
E. coli (CFU 100 mL−1Hlawga N/A TNTC 
Gyobyu 
Gyobyu + tube well 32 
Coliforms (CFU 100 mL−1Hlawga 182 N/A TNTC 
Gyobyu 120 172 222 
Gyobyu + tube well N/A TNTC 

N/A, not applicable; TNTC, too numerous to count; CFU, colony forming unit.

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