Testing to determine whether the water used in a dairy shed is of suitable quality.
About this Testing
Water that comes into contact with milk during milking or as a result of cleaning the milking plant must comply with MPI Standard 106.2 to ensure that raw milk is safe from microbiological and physical contamination.
ANZECC Trigger Value
absent in 100mL (<1mpn/100mL)
May be found in shallow bore water, or if water supply is not secure
< or equal to 5 NTU
High turbidity means that particles are present in the water. The particles may be indicative of dissolved species precipitating out of solution (e.g. oxidised iron), or high organic particulates.
Taking a Sample
When taking the sample, it is very important to follow the instructions provided, especially for the Ecoli test. This requires a sterile container (square plastic 400mL) and the tap needs to be sterilised to make sure that no contamination occurs. Also note that we need the samples back with 24 hours and less than 10°C, otherwise the results will not be valid. For clients who are not within easy driving distance from Hamilton or Christchurch, we suggest taking your sample in the early afternoon and sending it overnight to the laboratory.
Request a Dairy Shed Kit from the Laboratory. It contains 2 sample containers which are required for one test, i.e. both containers should all be filled from the same sampling point, not from 2 different points