Agricultural Water

Agricultural Water Testing

Understanding the quality and composition of water on farm is a critical component to modern farm-system management. Hill Labs offers a variety of agricultural water tests so that you can have all of your on-farm needs met by a single supplier.

Livestock Drinking Water Testing

The analytes in the livestock drinking water profile and their associated trigger values have been taken from the Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZECC), section 4.3 Livestock drinking water quality. The ANZECC guidelines cover a wide variety of chemicals, however we have only included those analytes likely to be of concern. 

Global GAP Water Testing

To assist growers and farmers in meeting Global GAP requirements, Hill Labs offers a convenient Global GAP Test Kit. The test kit includes analysis for the presence of E. coli and Faecal Coliforms in water and includes all of the necessary sample items, as well as a discounted courier ticket. The Global GAP Test is IANZ Accredited and results are provided on a 3 day turnaround time. 

Irrigation Water 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

Irrigation Water Kits can be requested here. A kit 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.

Effluent Testing

Use of dairy effluent as a source of nutrients for pasture growth has become commonplace, however frequently farmers have little insight on the nutrient composition of effluent being applied, which will change regularly depending on animal feed inputs. This can result in sub-optimal use of effluent as a resource or over application of other nutrient sources, such as fertiliser. As such, Hill Labs has developed a specific test, the Dairy Effluent Test, for testing effluent composition.

Total Nitrogen 0.44 kg/m3
Total Phosphorus 0.08
Total Potassium 0.3
Total Calcium -
Total Magnesium    -
Total Sodium -

 Contact us for more info

Latest Stories

Christmas Hours 2023/2024

With the holiday season fast approaching, our hours will differ from usual. Click here to view our opening hours over the 2023/2024 festive season or they can also be found on our website. If you have any questions or concerns, please contact us on 0508 44 555 22 or email us at
  20 Nov 2023

Hill News November 2023 - Update From Our CEO, Dr Jonno Hill

The cliché “change is the only constant” is as true now as it’s ever been. Within our changing climate, we have apparently just kicked over from La Nina to El Nino, which is likely to lead to more rain on the west coast and more drought on the east. Hats off to our farmers, who must do the best they can within unpredictable and sometimes severe weather events.
  17 Nov 2023

Our Dedicated Beverage Testing Lab

In the heart of Marlborough, we have a dedicated beverage testing laboratory with local knowledgeable staff and precision equipment. Leading the charge in supporting the beverage industry is Vanessa Burrows - our Blenheim Site and Key Account Manager - who is backed by an experienced team that have built an extensive network of clients across New Zealand.
  16 Nov 2023

What our customers have to say

"We've always found them to be responsive in getting results back and giving advice on problems we might be facing."

Andrew Hutchinson, Technical Manager, Turners & Growers

"We strongly recommend Hill Labs as a sound testing service provider to the honey industry."

Nick Walker, Technical Manager, Egmont Honey

"Their sample registration system has made things simple and seamless - collect, scan and send!"

Mathew Bannister, Compliance Manager, First Fresh New Zealand


As a New Zealand accredited laboratory by International Accreditation New Zealand (IANZ), Hill Labs' commitment to quality is tantamount to our overall operating philosophy. We pride ourselves on the quality of our work.