Think water Canterbury have a full range and expertise in the supply and design of filtration and water treatment systems from micro filtration, media filtration, ultraviolet treatment and custom built systems, to manage water quality for domestic, industrial and commercial uses.

Servicing   Filteration   Top

At Think Water Canterbury service of water treatment systems are recommended and necessary in order to ensure consistent water quality, and hassle-free operation for years to come. We service most makes and models of water filtration and purification equipment.

We perform thorough, routine maintenance for our customers, on an annual or semi-annual basis, respective to the requirements of each system at hand. Our services include scheduling and reminders, equipment maintenance, filter changes and more.

Cartridge Filters

All filters need replacing every 12-24 months depending on what type they are and what your water source is. The main reason for changing your filter regularly is for hygienic purposes. All filters end up collecting bacteria, even the ones that say they don't! Water filters are designed to catch sediment and cysts such as Giardia etc. These are trapped in the filter, hence regular replacement is necessary.

Other reason for filter changes are the media is exhausted or the filters block. Main water line breaks or pollen in water tanks can often cause the filter to be over loaded with debris, and it better they catch it than you drink it! If your filter is blocking regularly then you possibly have a system that was not matched to your conditions.

UV Treatment

There are only two components in these system that require replacement or cleaning on a regular basis – the lamp and the quartz sleeve. Depending on how often you are using the system (for example, if you turn the system off because it’s in a seasonal home, and it isn’t in continual use throughout the year), you may be able to do this maintenance less frequently.

The UV Lamp

If the UV system is in continuous use, the UV lamp should be changed every year. Due to the nature of UV lamps, over time, the production of germicidal UV-C drops off and it becomes less effective at deactivating organisms in the water. Changing the UV lamp yearly prevents this issue. Be sure to use lamps that are from the same manufacturer as your system.

The Quartz Sleeve

The second element that requires maintenance is the quartz sleeve. The quartz sleeve is the part of the UV system that protects the lamp from touching the water directly and transmits the UV light into the water. Over time, this sleeve can become fouled or cloudy from mineral deposits in the water.

When the sleeve is cloudy or fouled, it’s not transmitting the full UV dose into the water, and your system will not function effectively. Cleaning the sleeve is simple and requires the use of a mineral removal product. Once the sleeve is thoroughly cleaned, it can be placed back into the system and is ready to do its job.

If your sleeve is extremely fouled or difficult to clean, consider replacing it. Sleeves can last a long time, but must be transparent in order to properly transmit UV-C light from the lamp and disinfect the water. Replacing your sleeve may be required.

Water Softeners

Hard water is naturally occurring and can contain excess levels of dissolved minerals such as calcium, magnesium, manganese and iron resulting in scale build-up, iron staining, cloudiness on glassware and poor washing results. Despite being unsightly, the effect can lead to costly repair bills for key home appliances such as water heaters, dishwashers and washing machines.

When properly installed, up-to-date water softeners can last for 10 to 15 years with little maintenance only, nevertheless regular check-ups and cleaning will improve their lifespan. Also, adding a pre-filtration system to your softener will protect it from dirt and sediments that can be found in almost all water supply systems.


Get in touch today and one of our professional staff will get back to you.