Guides and Advice
Straight answers to the questions we get asked on the phone, written by the people who install and service this gear around Waihi, Thames and the Coromandel.
Nothing here is a sales pitch. If the answer is that you do not need anything, that is what it will say.
Filtration maintenance
Keeping a system working is two jobs: cartridges and, on a UV system, the lamp. Get the intervals right and you will not think about it again until next year.
How to change your filters and UV lamp
Both procedures step by step, the intervals that actually matter, and the lamp fitment table. RL6, RL7 and RL5 look nearly identical and only one of them fits your system.
How to choose a cartridge
Size is decided by your housing, not by you. Micron rating is decided by your water. This covers both, plus the standard setups for town, tank, bore, dam and creek supplies.
Pump install guides
Pump installation guides
Suction lift, flooded suction and submersible installs, and how to pick between them. If you are putting a pump in yourself, start here.
Installation and service
Would rather we did it? We install and service around Waihi, Thames and the Coromandel every week.
Knowing what is in your water
Water testing guide
What test to ask for, how to take a sample that gives you a true answer, what the staining around your house is telling you, and why one clear E. coli result is not the end of it.
Send us your results
Email your lab certificate to contact@pumpstuff.co.nz with your water source and how many people are in the house. We will come back with what you actually need.
More guides are on the way, including install guides and maintenance videos. If there is something you want covered, tell us.
Cannot find what you need?
Tell us your water source and what you are trying to fix. Two physical stores, thirty years of it, and a real person picks up.

