Water testing

Irrigation Water Testing

Testing to determine whether a source of water will be suitable for irrigation water.

About this Testing

Irrigation water is becoming increasingly important in parts of New Zealand, particularly on the east coast of the South Island where rainfall can be scarce. Because irrigation water often has significant levels of dissolved salts, it can have a detrimental effect not only on the irrigated soil, but also on the pumping equipment used. It is therefore important to test the water in order that any issues may be anticipated and the productivity of irrigated land and associated water resources maintained.
Guidelines for Irrigation water quality can be found in the ANZECC guidelines. These guidelines cover a wide variety of analytes, therefore we have selected the most appropriate for the irrigation water testing.

Testing covered by our Irrigation Water profile:
  • Total Anions
  • Total Cations
  • pH
  • Total Alkalinity
  • Hydroxide Alkalinity
  • Carbonate
  • Bicarbonate
  • Free Carbon dioxide
  • Langelier Saturation Index (LSI)
  • Electrical Conductivity (EC)
  • Approx Total dissolved Salts
  • Total Boron
  • Total Calcium
  • Total Copper
  • Total Iron
  • Total Magnesium
  • Total Manganese
  • Total Phosphorus
  • Total Potassium
  • Sodium Adsorption Ratio (SAR)
  • Total Sodium
  • Total Zinc
  • Chloride
  • Nitrate-N
  • Nitrate
  • Sulphate


Taking a Sample

Request an Irrigation Water Kit from the Laboratory. It contains 2 sample containers which are all required for one test, i.e. they should all be filled from the same sampling point. If you require microbe testing please consult us.

Unsure about the correct container to use to submit a sample? Consult our container catalogue

Contact Us

Freephone 0508 HILL LAB (44 555 22) or email Env.CSM@hill-labs.co.nz