Frequently Asked Questions


  1. How long will the bottles last?

    This depends on several things. The two key factors are Your water supply quality. Particularly mineral content. The volume of resin your system holds, example: The 9 litre bottle is rated for 1200 litres of laboratory grade H20.

  2. How do I know when to change the cylinders/resin?

    Each system has a volume meter. Once you reach the recommended capacity, we advise you to replace cylinders. Some customers choose to have a conductivity meter that measures the TDS (total dissolved solids), which will give an indication of how the resin is performing. However these meters cannot detect certain minerals, one of which is the first to start coming through before the TDS meter registers ION breakthrough.

  3. How long will it take for bottle exchange?

    We dispatch bottles daily so our customers have new bottles the next working day. If the customer owns their own bottles we will have the bottles returned within 5 working days.

  4. Should I go with “regeneratable” resin or “throw away”?

    We say if the figures work out economically acceptable, always use regeneratable resin, because there is minimal waste material created which is better for the environment. In some cases “Throw Away” resin is the better option due to freight costs involved with returning the resin to our factory. At anytime either resin can be used.

  5. Am I better off buying bottles or going on the exchange schedule?

    This depends of course on budget but mainly on usage. If you are going to need new bottles every 8 weeks or less, exchange bottles is the most economical. If you use only a small amount per month, you may choose a small unit and/ or to own your own bottles, we can help you in which setup is going to best suit your usage and budget.

  6. How do I know when to change the pre-filter?

    The filter will become a visibly dirty gold colour once it is becoming blocked, usually brown, green or even black in colour. Once the column flow becomes reduced it’s definitely time for a new filter.

  7. Do I need to have a water blaster to rinse my car?

    Having a water blaster is not a “must” but it is certainly nice to have, a real time saver and of course the high pressure spray gets into the tight spots. Using one does save water.

  8. Will the pure water remove existing water stains/streaks?

    Unfortunately no, not all minerals are able to be washed off again once dry. These are the nasty’s that have to be rubbed off with specially designed polish compounds that remove the etching effect, without damaging the surface. Once the surface is clean, using your Jetwash system will ensure the water marks don’t return. 


Ask us about the compound for removing your watermarks. 

Contact Us!

Jetwash Systems

8B Dakota Drive

Whitianga, 3510

Tel: +64 7 867 1161

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.