HOW TO TAKE A WATER SAMPLE
AGPATH P/L IS NOT A NATA REGISTERED LABORATORY. If the client requires a NATA accredited report, then laboratories are available in each state.
For full microbial analysis of water from any source that does not require NATA, then Agpath P/L can undertake the analyses.
Agpath P/L does not carry out chemical analysis of water samples but can arrange for samples to be tested at a registered laboratory.
The care with which a water sample is collected depends on the use of the water. For example, drinking water collection must be made in sterile containers and with care.
The accuracy of the result depends on the accuracy and care taken at the collection point.
For accurate bacterial counts of drinking water, samples should be delivered by courier to reach the laboratory within 24 hours.
Containers:
- Samples should be collected in a new clean, plastic bottle with a screw cap. A new eight-ounce plastic, disposable baby bottle or any sterile container is suitable.
- Clearly identify each container with a simple sample I.D. matched those used on the sample submission form that must accompany each sample. When mailing, place bottles in a box and pack with a loose, soft packing material to prevent crushing and use a priority post bag for mailing. Post on Monday to Wednesday so the water is not waiting in post over the weekend period.
- In warmer months, the sample should be shipped in a cooler with enough ice packs to ensure that it is still cool when it reaches the lab.
- Fill the collecting bottle no more than 50% with water so that the volume is aerated for the postage time.
Assessing Water Problems:
- Two separate water samples may be required to address water related problems due to plumbing and/or fixtures.
- One sample should be collected at the point of entry (well or water service) and another at point of use (tap, pool and etc.).This sampling method will help pinpoint problematic plumbing.
Livestock tanks:
- Collect samples from the specific area of the trough or pond where the water was consumed. Place these samples in a clean plastic container.
Tank water:
- Let the pump operate for a few minutes before taking the sample. Take the sample from water at the pump.
Well water:
- Let the pump operate ten minutes before taking the sample. Take the sample from water at the pump.
Aquaculture:
- Provide as much information as possible about the condition of the pond. If fresh water is running into the pond, collect the sample in the area of the pond least affected by the fresh water.
- When samples are taken from salt-water ponds where fresh water may have been added, gather water from both the top and bottom of the pond.
To fill out Water Submission form electronically click here.