17.8.2  Sampling procedure from a watercourse or reservoir

The steps are:

  • Open the sterilised bottle as described above.
  • Fill the bottle by holding it by the lower part and submerging it to a depth of about 20 cm, with the mouth facing slightly upwards. If there is a current, the bottle mouth should face towards the current (Figure 17.5).
  • The bottle should then be capped or stoppered.
Figure 17.5  Sampling of water from surface water (rivers, ponds etc.). (Source: as Figure 17.4)

17.8.1  Sampling procedure from a tap or pump outlet

17.8.3  Sampling procedure from dug wells and similar sources