UV Water Filter Service for Safe, E. coli-Free Water

A UV water filter must be serviced every 12 months to stay effective. After a year, the UV lamp no longer produces enough UV-C light to kill bacteria, even if it still glows.
Aqua Works provides full annual UV servicing for tank and bore water homes across Rodney and North Auckland, including lamp replacement, quartz sleeve cleaning, O-ring inspection, and a complete UV System WOF.

Book your annual UV service with Aqua Works to keep your drinking water safe year-round. 

Usually, it’s a lamp-life alarm (time to replace the UV lamp ~12 months) or a low-UV/flow fault caused by a dirty quartz sleeve or clogged pre-filter. Don’t ignore it, UV protects your drinking water. Boil water for drinking until it’s checked. Try: confirm power, replace/flush the pre-filter, then book a lamp + sleeve service (we’ll clean the sleeve, fit a new lamp, reset the controller and test). Call to schedule a service.

No. A UV lamp can glow long after it loses the ability to disinfect water. After 12 months, UV-C output drops below safe levels.

Aqua Works replaces your UV lamp with the correct model for your system and confirms disinfection strength with a full WOF, ensuring E. coli-free water year-round.

Trust Aqua Works to keep your UV system genuinely protective, not just glowing.

An annual UV service includes:

• UV lamp replacement

• Quartz sleeve inspection and cleaning

• Seal and O-ring checks

• Flow rate & pressure testing

• Controller/ballast testing

• Pre-filter assessment

• System sterilisation

• Full UV Warrant of Fitness (WOF)

Aqua Works’ certified water technicians perform a comprehensive 11-point UV service, ensuring your system works at peak disinfection performance.

Schedule your professional UV service with Aqua Works. Call us today.

UV manufacturers recommend sterilising a UV system every time it has been opened, because opening it lets bacteria in. Bacteria can also get into the pipes through any tap in the house.

So every time we install or service a UV system, we sterilise the UV unit and all the cold water lines in the house with hydrogen peroxide, never chlorine. It’s the most important step in a UV service, and it’s the reason we can offer the Aqua Works Guarantee. We’ve seen too many failed E. coli tests at homes and businesses where this step was skipped.

No. Chlorine can react with organic matter in the water to form by-products, some of which are classed as possible carcinogens. We use hydrogen peroxide instead. It breaks down into water and oxygen, and it kills the germs and biofilm living in your UV system and pipework.

You’ll find it in our shop as HydraShield 1L and HydraShield 5L.

The quartz sleeve is the glass tube the UV lamp sits inside. Dirt and minerals build up on it, and a dirty sleeve stops the UV light reaching the water, even with a brand-new lamp.

The most common problem we see with DIY UV servicing is a new lamp and new filters, but a quartz sleeve that hasn’t been taken out and cleaned. The sleeve should come out and be cleaned or replaced at every service, every 6 to 12 months. If you’re not comfortable doing this yourself, call us on 0800 278 296 and we’ll service it for you.

Without regular servicing, the system may no longer provide effective disinfection and bacteria such as E. coli may pass through. UV lamps lose germicidal strength over time, even if the light still appears to work, which is why most systems require annual maintenance.

Not necessarily. A UV system only makes your water safe to drink when it has been installed correctly and is serviced correctly: the filters and lamp changed, the quartz sleeve taken out and cleaned every 6 to 12 months, and the water lines sterilised.

When all of that is done, your water should be safe to drink. If you’re not sure your system has been looked after, we can service it and test your water.

Yes, but it isn’t an easy DIY job. Have a spare quartz sleeve on hand in case the old one breaks, take the sleeve out and clean it, and sterilise the UV unit and all the water lines afterwards. Those two steps are the most important part of the whole service, and they’re the ones most often missed.

If you’d rather not, we can service it for you.

Yes. We stock a full range of UV lamps and water filters. You can buy them in our online shop or at our shop at 2 Mill Lane, Warkworth. If you see one of our vans, you can flag it down: every van carries a large stock of replacement UV lamps and water filters.

If you service it yourself, remember to take out and clean the quartz sleeve, and sterilise the water lines afterwards.

Yes. Aqua Works provides laboratory water testing for E. coli, total coliforms, and other contaminants.

Book a water test and UV service together for complete peace of mind.

Yes. Aqua Works services Rodney, Warkworth, Snells Beach, Matakana Coast, Omaha, Leigh, Mangawhai, North Shore, Silverdale, Dairy Flat, Riverhead, Coatesville and everywhere in between, from Mangawhai to Albany.

We support both tank and bore water homes, rural properties, lifestyle blocks, and coastal homes.