Our Water Services

As a member of the Prowater Group, Great Northern Rural Services has extensive expertise and contacts to provide industry leading solutions and products

Our Key Water Services

At Great Northern Rural Services we can offer the following Water Services


GNRS can design all your projects from commercial, domestic, garden horticulture and nursery. With over 40 years experience  in the Midwest designing irrigation, we can offer many different solutions to suit your needs. From domestic gardens and lawn, commercial sites to a complete Campus we can design a system with all your needs considered.

Water Testing

  • Potability
  • Hardness
  • Calcium
  • Iron

AQUA~SURE® measures the suitability of water for a range of agricultural uses, and environmental monitoring including runoff.

We provide test specific sampling instructions. Succinct interpretation guides are included with reports on results. All water tests are analyzed and resulted reported on the same day the sample arrives at the laboratory. Please contact the laboratory for sample bottles.

Applications for AQUA~SURE® include:

  • Hydroponic solution and run-off /recycled water analysis
  • Dam, bore and channel water for irrigation
  • Spray water for tank mixing
  • Recycled / waste water
  • Rivers, lakes and streams
  • Soil solution monitoring

Depending on the water source, a combination of the below listed properties are reported: Nitrate (NO3), Ammonium (NH4), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulphur (S) zinc (Zn), boron (B), copper (Cu), manganese (Mn), iron (Fe), molybdenum (Mo).

Quality indicators; Acidity or alkalinity (pH), electrical conductivity (EC), sodium absorption ratio (SAR), chloride (Cl), sodium (Na), hardness (calcite), carbonate (CO3), bicarbonate (HCO3), total dissolved salts (TDS), residual sodium carbonate (RSC).


Great Northern Rural has the most qualified contractors to suit your installation needs. With many years experience in fully automatic commercial, domestic and agricultural installations we have can match the best contractor to suit your job. With fully stocked vehicles they arrive at your project ready for any situation.

Project Management

Our Water Technician has over 35 years experience in the Irrigation industry and has planned and managed some of the largest projects in the Mid-West. From schools, sporting ovals, public areas, commercial, mining, horticultural and nursery  we have the experience to make sure your project runs smooth and on time.

Water Auditing

We have fully qualified staff that can carry out a full water audit on your irrigation system. We can inform on system current performance and projected upgrades to maintain an efficient and productive system.


For troubleshooting tips and answers to commonly asked questions, please read below.
Q. My automatic irrigation system continually operates?

A. Chances are you have more than one start time programmed. You only require one start time for your controller to operate. You do not need a start time for each solenoid valve, they will follow in sequence.

Q. How often do I have to replace the batteries?

A. Most controllers have a battery back-up option and the general rule of thumb is that if you have replaceable batteries then we suggest that you change them when you change your smoke detector batteries. Replacing the batteries will only keep the time and program within the controller and not operate the valves during power outages.

Q. My solenoid valves are slow to close and sometimes stay on for long period of time?

A. If your solenoid valve has a flow control stem chances are that it has not been set correctly. Locate the handle in the top of the bonnet and wit the irrigation system running, turn the handle off until you see any sprinkler start to lose performance, at this point open the valve handle ½ to 1 full turn. Turn the valve off now at the controller, it should close within 5 seconds.

Q. I seem to be getting more water on the path than the lawns?

A. This could be from an over-pressurized system, just because you have more pressure does not make your irrigation system work better, sometimes overpressure will actually reduce the performance of your system. The easiest way is to adjust the flow control stem if fitted to your solenoid valve, by reducing the water allowed to pass through the valve you also reduce the pressure / hence improving the performance of your sprinklers.

Q. Should I fit a pressure regulator to my dripper / micro irrigation system?

A. Yes, a simple cheap and reliable pressure regulator will ensure that the performance of the drippers and micro jets is not too high and therefore working to their optimal performance.

Q. Should I install with PVC (white) or poly (black) tube?

A. All pipe work and fittings up to the solenoid valves must be to the Australian Standards AS1477, either Blue Line PN12.5 Poly of Class 12 PVC. On the downstream side of the system you can use a lower pipe class normally Class 6 PVC or Low Density Poly Pipe.

Q. Should I install a Master Valve?

A. While it is not a requirement in most states, the installation of a master solenoid valve will ensure that you have a failsafe system that reduces the static line pressure in your system when not in operation.

Q. Should I install an isolation valve at my solenoid valves?

A. It may not be required by law in your state, but it makes troubleshooting and servicing of your system easier. Not having to return to the water meter to turn it off, thus also turning off water to your whole house when performing simple repairs makes the addition of an isolation valve worthwhile.

Q. I want to install an irrigation system myself, what should I do?

A. To ensure your system is going to work, bring a detailed (scaled plan) into the store and ask us to design a system to your needs, we will be more than happy to walk you through the installation process. Certain stages will have to be completed by a plumber but the rest of the system can be installed over a couple of days. Remember to pace yourself and do in stages.

Q. How far apart should I put my sprinklers?

A. For optimum performance if the sprinkler selected is designed to throw 6 metres, then the next sprinkler should be placed at the same distance, this will provide “head to head” coverage and save you water in the long run by not turning on the system to pick up a couple of dry patches.

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Technical Notes

Follow the link to our latest technical notes

Technical Notes on our Design