Our Water Guides explain common water quality problems in plain English and help you choose the right filtration for your home. Learn what can affect mains, rainwater, bore and river water – from chlorine taste and hard water scale to PFAS, fluoride, tannin and bacteria – and how filtration, UV and water softening can help. Our cartridge finder pages match your Puretec system to the correct genuine replacement cartridge or maintenance kit. The information is drawn from Puretec’s own product and application material. For health questions, follow your local water authority or state health department. Need help? Call or text 0447 203 775.
Water problems and what to do
PFAS in Tap Water: How to Reduce Forever ChemicalsWhat PFAS are, how carbon and reverse osmosis filters reduce them, and the whole-house and under-sink options Puretec recommends.
Fluoride in Tap Water: Filter Options to Reduce ItCompare Puretec’s two ways to reduce fluoride: the RO270 reverse osmosis system and the FL051 fluoride reduction cartridge.
Is Rainwater Tank Water Safe to Drink? Filtering and CareWhy rainwater needs treatment, how Puretec filtration and UV systems help, and how to look after your tank.
Boil Water Alert: What to Do and How Filters Can HelpWhat a boil water alert usually means, why you must follow your water authority, and how Puretec UV and ultrafine filtration systems work.
Iron Staining and Bore Water: Causes and SolutionsWhy iron in bore water causes orange-brown staining, why to test first, and the treatment options Puretec recommends.
Brown or Tea-Coloured Water? Tannin Causes and FixesWhat causes tannin in rainwater and river water, and how Puretec’s tannin cartridges and resin systems reduce it.
Hard Water and Scale: Filter, Conditioner or Softener?How hard water causes scale, and when to choose a scale-reduction filter or a Softrol water softener.
Chlorine Taste and Smell in Tap Water: How to Reduce ItWhy mains water contains chlorine and how under-sink, whole-house and shower filters reduce its taste and smell.
Bacteria, Giardia and Cryptosporidium: UV vs FiltrationHow UV and ultrafine filtration treat bacteria and cysts, and why whole-house protection matters for Cryptosporidium.
Nitrate in Bore Water: Testing and Treatment OptionsWhere nitrate in bore water comes from, why to test, and Puretec’s reverse osmosis and nitrate-selective resin options.
Microplastics in Drinking Water: Can a Filter Help?Which Puretec under-sink cartridges are promoted to reduce microplastics, and how ultrafine filtration works.Choosing and maintaining a filter
Which Water Filter Do I Need? A Guide by Water SourceA simple way to choose a water filter: start with your water source, then your goal, home size and how many taps you want covered.
Under-Sink vs Whole-House Water Filters: Which to Choose?How under-sink and whole-house water filters differ, and when it makes sense to combine them.
How to Change a Water Filter Cartridge (and How Often)Step-by-step cartridge changes for quick-twist and housing-style filters, plus how to tell when a cartridge is due.
Water Filters for Caravans and RVs: Options ExplainedHose-connected and under-bench water filter options for caravans, motorhomes, camper trailers and boats.Replacement cartridge finders
Puretec Hybrid G7 / R2 Replacement Cartridges and HR-G7R2 KitThe genuine Puretec parts that fit the Hybrid G7 and Hybrid R2, from the complete HR-G7R2 kit to individual cartridges, lamp and sleeve.
Puretec PureMix Z Series Cartridges: Z1-R, Z2-R, Z6-R, Z7-RMatch your Puretec PureMix or Z1 quick-twist system to the correct genuine replacement cartridge.
Puretec Hybrid E and I Series Kits: HR-EI6, HR-EI7, HR-EI13Match your Puretec Hybrid E or I series system to the correct HR-EI maintenance kit, and what each kit contains.