An Australian town with the most improbable name of Toowoomba is planning to recycle sewage and reuse it in supplying about 25 - 30% of the place's drinking water. The nearest town where recycling for drinking is done is Singapur, about 1% and that for industrial use. Israel does not supply recycled water for drinking.
Twooboomba has a wet climate, with 1,000 mm rainfall per year, so the experiment is unrelated to any water scarcity situation. It has a stational supply problem, easily solved by a dam. But dams are taboo in Australia´s supersticious political environment. They perturb the spirits of the aboriginal dream underworld. So they are exploring the sewage drinking alternative, a technology thought to be at the front of a perceived technological frontier.
The debate is heated. Extracts:
Leo: This debate has established some paradigms in Toowoomba and you should become familiar with them. Singapore has plant similar to that proposed fro Toowomba but Toowoomba proposes 25% and increasing of it water to be reclaimed water. Singapore has the biggest desal plant on earth. It built the RO plant as a strategic utility should its supply from Malaysia be cut of for their own regional political reasons. Singapore uses an STP 99% greywater - not hospital, industry etc. CH2M Hill says there is no precedent for the level Toowoomba proposes.
London is a case of “bad practice”. This has been agreed in Toowoomba. Thames water has a disgraceful environmental record. Prozac shows up in taps. Male fertility is low.
“If you want to have a baby get out of London”, London doesn’t have any form of planned potable reuse.
(This Secret Diarist thinks Leo is referring to a study linking estrogen in Thames water with lower male fertility in 1995. The study has not been followed up to my knowledge.)
Fear is being put upon the community by proponents avoiding the fact and talking about “the driest continent on earth” where all the inhabitants live on the coast in the “wettest places on earth”. Fear about climate change eating everybody up. Fear that taps will run dry when in fact this RO project won’t do anything to ease the current drought (2011 before it can be used).
Toowoomba is awash with water from other sources. This is not about water supply it is about establishing a demonstration potable reuse plant in the “national interest”. The NWC submission states clearly: Jam it in between Council elections and use it as a precedent fro Brisbane and the Gold Coast - that is the “national interest”.
Paul: The people outside Toowoomba should be advised of some facts: Toowoomba City Council proposes that its residents drink a cocktail containing at least 25% recycled sewage. This is not done at these proportions ANYWHERE else in the world. NOWHERE. (Singapore, the only comparable example, uses only 1% - and has commissioned the largest desalination plant in Asia. Israel, Mr Turnbull’s example, has the world’s largest desalination plant and doesn’t use recycled sewage for drinking purposes.)
The plan has serious flaws which may end up costing Toowoomba ratepayers an additional $66 million plus additional compensation by the State government to Oakey Gowrie Creek irrigators.
The RO waste stream is to be piped to Acland Coal mine. They have not yet agreed to accept this. They think they are getting high quality recycled water not the RO waste stream. If they don’t take the RO waste stream (and even if they do - at the end of the mine life), Toowoomba City Council will need to find an alternate end solution for the waste. The most viable option in the NWC application is the use of 600 hectares of evaporation ponds costing $66 million (the less costly 68 hectare alternative is described by Council’s advisers as “full of uncertainties”).
The Water Futures recycled sewage project also reduces the volume of Oakey Gowrie Creek jeopardising the irrigators in this area. They are threatening legal action to protect their livelihoods.
While the Federal government has granted funding approval, it is conditional on a number of matters including a referendum and resolving issues such as the Oakey Gowrie Creek irrigators.
Jondaryan Shire has indicated that, as a water customer of the Toowoomba City Council, they should be included in any referendum. It seems fair that shires which will be expected to take the recycled sewage should be given a voice in this process.
One serious concern has been the Toowoomba City Council’s approach to this issue. There has been virtually no public debate on this issue. Toowoomba Mayor Di Thorley spends her time flying to water conferences around Australia to talk about recycled sewage yet she won’t discuss the issue with the Toowoomba community.
Leo: Scientific study has shown the reclaimed water as being purer than rainwater. Increased water supply is in the ‘national interest’. Therefore, no doubt, increased water recycling is in the ‘national interest’. Of course a successful plant will be used to calm irrational fears elsewhere. So it should. As for whether it solves the current drought - who cares? To be frank, Australia is a continent beset by drought, and probably increasingly so into the future. Whether it solves this drought is beside the point - it will help in the long run.
Paul: So Toowoomba residents should be the “lab rats” for the rest of Australia? Recycling projects may well be in the “national interest” but I don’t see politicians like Peter Beattie, Henry Palaszscuk and Malcolm Turnbull going to their own electorates and saying “it’s in the national interest that you drink recycled sewage, so we are going to put the national experiment in our electorate”.
Given that nowhere else on this planet currently drinks recycled sewage at rates of 25% and above (and Council’s own advisers think it is high by international standards), it will perhaps be difficult to provide reports of comparable experience showing no ill-effects to humans.
Toowoomba City Council has scared Toowoomba residents by claiming that the water will run out if they don’t adopt the recycled sewage project. Then Council finally admits that it won’t solve the current problems because it won’t be online until 2011-2112. It also doesn’t solve Toowoomba’s long-term water needs.
Robert: Thousands of Toowoomba residents do not want to be the Experiment for Australia so lets see this one tried on in a Sydney electrolate.We have other supplies of water and they can be bought to the people in a shorter space a time than this reclaimed sewage water . We have a massive amount of water to the west of us at Chinchilla. This water comes up with the gas and it can be RO on site and then pumped into all towns along the way. It is enough water to supply this area for 20 years and in that time the governmnet of the day can build the dam we all need.These government needs to listen to the citizens and not use the scraemongering tactics when we are all suffering in this terrible drought.This crazy scheme is not to bring water to the residents but to bring water to the Ackland Coal company and a new Industral site west of Toowoomba.
Greg: Singapore health is still conducting extensive tests on removal of dangerous chemicals and compounds from effluent using RO and as of yet they have not come up with one particular membrane technique that is anywhere near successsful enough to warrant the risk of using more then 1%. Yet we have Toowoomba City Council telling us they can remove all the chemicals and extract 25% to 29% from our effluent. Perhaps Toowoomba will become a test case of how not to poison your community through stupidity and lies.
Mike: Do you really know why Singapore uses only 2-3% RO treated wastewater (not 1%) in its potable supply or are you just pretending you do? The real reason for the low blending ratio is that NeWater (as they call it in Singapore) is produced to make a profit and the Public Utilities Board makes more money selling it to industry than blending it with raw surface water upstream of the conventional water treatment plant (indirect potable reuse). Do you know why they make more money out of it selling it to industry? Because it is of far better quality than the drinking water! This means industries that require ultra high quality water for microchip manufacture, boiler feed and alike can spend less money polishing it with ion exchange and therefore are prepared to pay more for it.
Reverse osmosis filters out molecules for God’s sake! How many dead rats, dog turds, cleaning chemicals etc etc do you think fit through a 0.0001 micron hole? The stuff that squeezes through the membranes is WATER. It is as illogical to think of it as sewage as it is to think of the saliva in your mouth as sewage. It is WATER!
I know scientific argument does not wash with some people, and with the historical background of thalidomide, smoking etc I can understand why this is the case to some extent. Unfortunately, many people seem to have a deep seated distrust of anything scientific and assume anyone who uses bigger words than them must have some secret agenda.