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

Table 2 Occurrence of Escherichia coli in drinking water for humans

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

ISSN: 1347-4715