Garlick household Neighbourly 3.8.18

I have just had my 18 month old hot water cylinder fail. Both the plumber and the electrician told me they are run off their feet replacing cylinder elements. There is a chemical reaction that occurs when chlorinated water is heated and passed thru copper pipe. The council are now aware of this but are denying any responsibility. So not only are CCC and Dr Alistair Humphreys poisoning half of Christchurch, they are also slowly wrecking our homes. Unfortunately for Dr Humphreys and the CCC, two of the biggest rebuilds in Christchurch – the new Hospital and the justice precinct – are completely piped in copper. Please share as the more ratepayers who know about this the better.
– John Garlick from Hillsborough


I have just had to have my water cylinder replaced. It was old but chlorinated water may have hurried it along!
– Joy Masters from Cashmere, 04 Aug

Likewise a 2 year old cylinder with 2 elements….both corroded
– Dugald Wilson from Woolston, 04 Aug

Our 30 month old cylinder being replaced. And same story from plumber who is flat tack replacing cylinders due to chlorinated water. Our new cylinder is vitreous enamel which we are hoping to get more life from. Since the 2011 earthquake we have now had three new cylinders
– Naomi Hannah from Cashmere, 04 Aug

I too have had three replacements since the earthquake 😦 Thanks for sharing about the cylinders. I have noticed hot water temperature dropping! What’s to stop the replacement elements corroding?
– Chris Coleman from Huntsbury, 07 Aug

Filtering the water 💦 is your answer – for all yr needs
– Greg Woods from Mount Pleasant – Redcliffs, 08 Aug

Why should we have to pay to filter our water…….
– Janice Lisle from Sumner, 08 Aug

It is not only copper elements, as our last one was stainless steel, but the chlorine reacts with the welds on stainless causing the cylinder to leak around where the pipes go in. Hurrumph! Not at all happy with the unexpected cost of having chlorinated water. We were not warned by council of this.
– Naomi Hannah from Cashmere, 11 Aug

We were not warned by council of this. Agreed. This looks like a liability issue. If a plumber uses initiative to offer a filter system on piping BEFORE water enters tank, they could make a fortune!
– Viv Yeki from Woolston, 11 Aug

They Are!!
JG – John Garlick from Hillsborough, 11 Aug


“Christchurch plumber Darren Chatwin says July and August have been the busiest months for cylinder repair and maintenance since the Canterbury earthquakes in 2010 and 2011. ‘Our workload regarding hot water cylinders has probably gone up 400 percent’ … Christchurch hot water cylinder manufacturer Superheat have had to double their production over the last five weeks, bringing in extra staff and working overtime to keep up with demand” – Chlorine suspected in Christchurch hot water cylinder failures, TV3 Newshub, 14 Aug

N.B. Christchurch City Council chlorine map, from 26 March 2018

Hot Water Cylinder Not Working – Do You Need An Electrician or Plumber?


Ron McCandlish to CRA 31.7.18

Dear Committee,

Water Cylinder Corrosion Problems

I have the rights to American technology for treating hardness etc., in
water. This is a non-chemical treatment process. Reading of the problems
your residents are having with water heating elements I just may be able to

Please contact me at this email or at the cell phone number below.

Kind regards

Ron McCandlish


Gausstech limited
+64 22 407 8583.

[ Ed. – Refs: ]

Shaw‎ household to CRA 14.8.17

Hi there, we live on Dyers Pass Rd and have replaced 2 elements on a Peter Cox Silver Bullet cylinder in 2016. Eventually the cylinder started leaking and required full replacement. The brand new cylinder has already had one element replaced. Ironically our 30 year old cylinder seems to be much more reliable, although we still have had to replace one element in just under 5 years. Marcus Shaw‎

West household to CRA 10.8.17

Huntsbury hard water calcium


Just had our dishwasher just about stop working due to limescale, and recently returned from Denmark where all dishwashers have a salt dispenser to treat their hard water. In the process of investigating this I came across your water chch page. I have joined to post, as we have had many issues.

I live at 19 Huntsbury Ave, and my father lives in our old house at 1/21 Huntsbury. We were in 1/21 from 2005-2010, in 19 since then when we got my father in next door.

We have had numerous water issues, and I believe it has been far worse since quakes. I think we have replaced 3-4 heat exchangers or complete units since Nov 2010, in gas water heaters, both Bosch and Rinnai, copper and stainless, our jugs are terrible, and as i said dishwasher is bad also.

I had a kidney stone in 2012, which was calcium, and have been investigating water filters etc, but wonder how seriously the effect of the new concrete throughout the water system around the hill tanks is being taken, are CCC investigating the issues?

I am work in construction/heritage stonemasonry, and salts leaching from cement and aggregates is a big issue. I have had various opinions from gas appliance guys, but don’t seem to be much they can do, any thoughts, what is the CCC plan/ solution?

Is there recent data from Huntsbury 1 and 2 reservoir they have provided, or other in my area with issues?

Regards Ben West, 021406514

Neighbourly enquiry

Robertshaw household to CRA 3.8.17

Beckenham kettle scale too

Hey, is the “hard water” problem the issue leaving bad scaling in my brand new kettle?

– Jess Robertshaw from Beckenham

– Neighbourly reply to our local inquiry, CCC water burns Cashmere HWCs, noted at

Morrison household to CRA 21.7.17

gas hot water unit damage

yes we are in percival street and we are on to unit number 3! for gas hot water, got told the same thing at last installation, that it is the water. Seems to be worse since the earthquakes.

our latest is a Rinnai but did have a Bosch cannot recall what the first one was it lasted the longest, def think the water issues is post EQ.

– Zarnia Morrison, Sydenham

– Facebook reply to our local inquiry, CCC water burns Cashmere HWCs, noted at

Drijfhout household to CRA 21.7.17

gas hot water unit working

Rinnai units are suited to the water in the area. We were advised against getting a bosch. We live just past worsleys rd on cashmere rd.

– Marten Drijfhout, Cracroft

– Facebook reply to our local inquiry, CCC water burns Cashmere HWCs, noted at