Complaints - Please scroll to the bottom of the page
« Hauraki Rail Trail | Main | Steve Hart On The Way Out »

Further Information on Fluoride Proposal

Greg Hamption provided further information to the meeting on Monday that gives greater clarity to what it is that Fluoride Free Thames have been working away at behind the scenes since the Referendum in order to achieve an alternative water supply in Thames.

Here is an extract Greg's Memorandum that he has now provided to me:

"Members of the public have since requested a non-fluoridated water supply as evidenced in the following letter excerpt of 15/11/2015 to Councillor Connors below:"

"We are writing to you as one of our elected representatives for the Thames area to request consideration for those who voted to stop fluoridation and those people now and in the future who are not aware that fluoride is added to the water supply.

We would like to be made available:

1. At least one public tap supplying non-fluoridated water.

2. Provision of regular information advising people that that may affect them; and ways to opt out"

- Jane Beck

Two options for a central filter system were prepared - one for an 'Ion Exchange ($7,210), and the other Reverse Osmosis ($11,450).

A third option was suggested by Jane Beck in the following:

"Fluoride Master Ion Exchange Filter

I have had a Fluoride Master Filter fitted. Testing has shown that it removes all detectable fluoride. The ion exchange is based on bone char and removes only elements that have an affinity for calcium, including fluoride. It does not remove chlorine.

I have it fitted in line with a 50 micron sediment filter and a medium sized carbon filter and it does not slow my tap flow rate. It takes 25 seconds to fill a 10 litre bottle, which equates to 24L/min. A 20L bottle would take 50 seconds to fill. My understanding is that the bigger the filter the less it affects the flow rate. The Fluoride Master Filter is good for 400,000 Gallons (over 1.5 million litres). It will clearly last a lot longer than the 2,00L filter. The whole filter can be replaced or just the filter substrate which is cheaper. The Vitasalus website has details: . My email to Bruce has details of an NZ supplier.

You asked what we hoped for and you suggested the Porritt Park area as a possible position for the tap. We think the Porritt Park area right next to the shopping centre car parking would be a suitable location. It is central, easy to access by walking (on the flat) and by car (with adjacent parking) for both locals and visitors and already has a piped source of 

municipal water. We hope that in keeping with the newly upgraded Porritt Park area this new tap would be aesthetically pleasing, possibly with some seating.

We would recommend that a filter to remove chlorine be fitted in line with the fluoride filter. Chlorine gives an unpleasant taste to the water (this was frequently commented on by people in the lead up to the referendum).Those that prefer no fluoride are also probably more likely to prefer no chlorine.......

..... With regard to the capacity required we can only guess. If the 795 people that voted to stop fluoridation each used 4L/day then 3,180L/day (1,160,700L/year) would be required. At this rate the Fluoride Master filter would last about 16 months. Usage by visitors could increase the demand. A meter measuring the usage would be essential to establish when to change the filter and/or measure the fluoride content of the water.

If the raw water has not had the fluoride level measured recently would it be possible to have this test done?

Finally I draw your attention to the second part of our request, that of informing the Thames residents on a regular basis of the fact that the water is fluoridated. This could be done at the same time as the notices about plumbosolvency. This is covered in more depth in our original letter to Diane Connors that is attached."

Greg costed this out as follows:

"Rough cost estimates for Option 3 is as follows:


Cost Estimate

Water connection / Meter and fittings


Mounting Plinth / Housing


Fluoride Master with a Pure Master filter


Capex Total




**Estimated Annual Operating Costs

$3 - 5,000 per year

 **Note: Operating Cost estimated as follows - the fluoride master has an estimated 1.5M litres lifespan, that implies 1 year life at a consumption of 4m3/d, or 2 years at 2m3/d. The replacement of the filter on an annual or two yearly basis will have to be considered in the ops budgets going forward. Cost of the water at say 2m3/d would be around $1k pa. So, operating costs between 3 and 5k pa dependant on filter replacement regularity.


On the options so far investigated, it appears that a non-fluoridated water supply facility could be provided for approximately $11,000 in capital costs with ongoing operating costs of $3,000 - $5,000 per year."

It was on this basis that the direction was given by the Board to proceed with "Planning and Costing."

Overall this gives a much better idea of what is being proposed - no special reticulation that would have been horrendously expensive. One is tempted to support the proposal if only to get the 'antis' off our backs, but I would suggest that whatever is approved in the end, that it will simply be the beginning of far greater demands in the future for further points, and Jane's demand that continuous information of fluoridation be provided to the public is simply a 'Trojan Horse' - let's be quite clear about that.  

I have posted this because of the substantial interest as evidenced by reader numbers on previous posts on the subject.




PrintView Printer Friendly Version

EmailEmail Article to Friend

Reader Comments

There are no comments for this journal entry. To create a new comment, use the form below.

PostPost a New Comment

Enter your information below to add a new comment.

My response is on my own website »
Author Email (optional):
Author URL (optional):
Some HTML allowed: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <code> <em> <i> <strike> <strong>