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Table 2 Occurrence of Escherichia coli in drinking water for humans

From: Bacterial contamination of drinking water sources in rural villages of Mohale Basin, Lesotho: exposures through neighbourhood sanitation and hygiene practices

Source of water

Total number of samples tested

Range of Escherichia coli counts per 100 ml

Mean Escherichia coli count per 100 ml

Protected spring

9

< 30–4.2 × 103

493.3

Unprotected spring

13

4.5 × 103–4.35 × 107

13,017.7

Protected open wells

2

< 30–5 × 103

2515

Unprotected open wells

4

5.5 × 103–9.8 × 103

7650

Stream

2

1.15 × 104–1.18 × 104

11,650

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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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