Laramba (Napperby) Northern Territory – Uranium
Highest Uranium levels recorded recently in breach of Australian Drinking Water Guidelines in Australia
Highest levels detected each year listed below
2007/08: Laramba Uranium 0.04mg/L
2008/09: Laramba Uranium 0.044mg/L
2009/10: Laramba Uranium 0.02895mg/L
2010/11: Laramba Uranium 0.038mg/L
2013/14: Laramba Uranium 0.039mg/L
2015/16: Laramba Uranium 0.04064mg/L
2016/17: Laramba Uranium 0.047mg/L
2017/18: Laramba Uranium 0.046mg/L
“Based on health considerations, the concentration of uranium in drinking water should not exceed 0.017 mg/L.” ADWG 2011
Laramba (Northern Territory) – E.coli
2006/07 Laramba E.coli 3 samples exceeding trigger level. 93.6% samples within trigger level
2008/09: Laramba E.coli 1 Number of e.coli detections
2009/10: Laramba E.coli 2 e.coli detections 94% performance over year
Laramba (Napperby) 24 March 2011 Significant levels of E. coli were detected in Laramba’s water supply and a Precautionary Advice was issued. Power and Water undertook an inspection to identify the source of contamination and dosed the production bores and storage tanks. The system was then comprehensively flushed to draw the chlorinated water through the rising main and reticulation system to ensure disinfection of the whole water supply system. Following this, analyses of additional water samples confirmed that the water was clear from E. coli and other indicator bacteria and the Department of Health lifted the Precautionary Notice on 11 April.
“Coliforms are Gram-negative, non-spore-forming, rod-shaped bacteria that are capable of aerobic and facultative anaerobic growth in the presence of bile salts or other surface active agents with similar growth-inhibiting properties. They are found in large numbers in the faeces of humans and other warm-blooded animals, but many species also occur in the environment.
Thermotolerant coliforms are a sub-group of coliforms that are able to grow at 44.5 ± 0.2°C. E. coli is the most common thermotolerant coliform present in faeces and is regarded as the most specific indicator of recent faecal contamination because generally it is not capable of growth in the environment. In contrast, some other thermotolerant coliforms (including strains of Klebsiella, Citrobacter and Enterobacter) are able to grow in the environment and their presence is not necessarily related to faecal contamination. While tests for thermotolerant coliforms can be simpler than for E. coli, E. coli is considered a superior indicator for detecting faecal contamination…” ADWG 2011
Laramba – Northern Territory – Hardness
2007/08: Laramba Hardness 332mg/L
2008/09: Laramba Hardness 276mg/L
2009/10: Laramba Hardness 272mg/L
2010/11: Laramba Hardness 272mg/L
2013/14: Laramba Hardness 288mg/L
2015/16: Laramba Hardness 302mg/L
2016/17: Laramba Hardness 304mg/L
“To minimise undesirable build‑up of scale in hot water systems, total hardness (as calcium
carbonate) in drinking water should not exceed 200 mg/L.
Hard water requires more soap than soft water to obtain a lather. It can also cause scale to form on hot water pipes and fittings. Hardness is caused primarily by the presence of calcium and magnesium ions, although other cations such as strontium, iron, manganese and barium can also contribute.”
Australian Drinking Water Guidelines 2011
Laramba – (Northern Territory) – Iodine
2007/08: Laramba Iodine 0.35mg/L
2009/10: Laramba Iodine 0.35mg/L
2013/14: Laramba Iodine 0.29mg/L
2015/16: Laramba Iodine 0.24mg/L
2016/17: Laramba Iodine 0.18mg/L
Iodide: Based on health considerations, the concentration of iodide in drinking water should
not exceed 0.5 mg/L.
Iodine: No guideline value has been set for molecular iodine.
The element iodine is present naturally in seawater, nitrate minerals and seaweed, mostly in the form of iodide salts. It may be present in water due to leaching from salt and mineral deposits. Iodide can be oxidised to molecular iodine with strong disinfectants such as chlorine.
Molecular iodine solutions are used as antiseptics and as sanitising agents in hospitals and laboratories.
Iodine is occasionally used for the emergency disinfection of water for ﬁeld use but is not used for disinfecting larger drinking water supplies. Iodide is used in pharmaceutical and photographic materials. Iodine has a taste threshold in water of about 0.15 mg/L.
Iodide occurs in cows’ milk and seafood. Some countries add iodide to table salt to compensate for iodide-deﬁcient diets.
Laramba – Northern Territory – Total Dissolved Solids
2016/17: Laramba Total Dissolved Solids 647mg/L
“No specific health guideline value is provided for total dissolved solids (TDS), as there are no
health effects directly attributable to TDS. However for good palatability total dissolved solids
in drinking water should not exceed 600 mg/L.
Total dissolved solids (TDS) consist of inorganic salts and small amounts of organic matter that are dissolved in water. Clay particles, colloidal iron and manganese oxides and silica, fine enough to pass through a 0.45 micron filter membrane can also contribute to total dissolved solids.
Total dissolved solids comprise: sodium, potassium, calcium, magnesium, chloride, sulfate, bicarbonate, carbonate, silica, organic matter, fluoride, iron, manganese, nitrate, nitrite and phosphates…” Australian Drinking Water Guidelines 2011
Laramba (Northern Territory) – Silica
2016/17: Laramba (Northern Territory). Silica 85mg/L
To minimise an undesirable scale build up on surfaces, silica (SiO2) within drinking waters should not exceed 80 mg/L.
Silica present in water is usually referred to as amorphous silica (i.e. lacking any crystalline structure). When silica is dissolved within water it forms monosilicic acid:
SiO2 + 2H2O à Si(OH)4
When the concentrations of monosilicic acid increase, polymerisation of the silica occurs, forming polysilicic acids followed by formation of colloidal silica. Monosilicic acid and polysilicic acids are the forms of silica analysed when determining dissolved silica content.
The deposition of silica from solutions can occur via various mechanisms. The deposition of silica that can cause the most problems for the water industry is via silica’s ability to deposit on solid surfaces that have hydroxyl (OH) groups present. Surfaces that commonly have hydroxyl groups present are glass and metallic surfaces. For example, dissolved silica will react with the surfaces of glass and begin to form a white precipitate. The silica forms silicates on the surface, resulting in silica build-up. In cases where customer complaints occur due to scale build-up, water hardness and silica concentrations should be investigated to determine the cause.
Silica can be a problem in water treatment due to its ability to cause fouling of reverse osmosis (RO) membranes (Sheikholeslami and Tan, 1999, Ning 2002, Sahachaiyunta and Sheikholeslami 2002). This occurs when the dissolved silica of the concentrate becomes super-saturated, causing silicates to form in the presence of metals, and these deposit on the membrane surface. The silicate then dehydrates, forming hard layers on the membrane that reduce the effectiveness of the process… 2011 ADWG
Indigenous community launches lawsuit against NT Government over housing, uranium water issues
Veronica Tilmouth will do anything to make sure her family members have a roof over their heads — and usually that means sleeping on her kitchen floor.
Ms Tilmouth’s home — a small brick, three-bedroom house — sits in Laramba, on the edge of the Tanami Desert.
It is a house that usually has more than 10 people staying in it, including her son, her nieces and nephews, and their children.
Her bed is a thin, foam mattress covered in toys and kids blankets. It lays a couple of metres from her kitchen sink and doubles as a lounge during the day.
“Too many people [live] here,” she said, as she watched four of her great nieces and nephews play in the small front yard.
The other rooms are filled with mattresses and bedding for other family members who, without her, would be homeless.
There are about 40 homes in the remote community, 250km north-west of Alice Springs, all managed through the Northern Territory remote public housing system.
Those homes need to accommodate around 350 residents.
It can take years to secure a place, according to residents, meanwhile there is no option to privately rent or buy.
In the summer months, the region is excruciatingly hot and in the winter, bitterly cold.
Shelter is critical to survival and often families are forced to pile into the small, aging homes that litter the community.
For years, Ms Tilmouth was also living with a series of maintenance issues; a leaking sewage system, taps that did not work, and a toilet that would not flush, she said.
Tradespeople could take weeks or months to come out.
The community’s water supply also contains potentially toxic amounts of naturally occurring uranium.
The water used in every home contains more than double the amount of uranium than is recommended in the Australian Drinking Water Guidelines.
According to data previously obtained by the ABC, the NT Government has been aware of it for at least a decade.
“For the little kids, we need it to be better,” she said.
But, for the first time in years, the grandmother is hopeful change might be coming: The community is suing the Government over the state of its public housing and water.
“Every landlord in Australia has a responsibility to ensure that the premises they provide to their tenants are safe and habitable,” solicitor assisting Australian Lawyers for Remote Aboriginal Rights Daniel Kelly said.
“We say that houses that contain drinking water with elevated levels of uranium are not safe and habitable and we say that houses that have long-term issues with plumbing, electricity, lack of air conditioning in a desert environment are not habitable.”
The lawsuit was filed this week by The Australian Lawyers for Remote Aboriginal Rights group on behalf of residents against the Northern Territory Housing Department.
Laramba will be the second community to sue the Government for failing to provide reasonable housing after residents of Santa Teresa, a community east of Alice Springs, won an important test case earlier this year, and were paid thousands of dollars in compensation.
“These are not isolated issues,” Mr Kelly said.
“The remote housing crisis in the Northern Territory has been going on for almost two decades.
“People are desperate … this it seems to me the only way that people can hold the Government to account.”
Mr Kelly said they had been approached by other Northern Territory communities interested in similar action.
‘Too many people’
Stephen Briscoe lives in one of the most overcrowded homes in Laramba.
His bright blue, three-bedroom concrete bunker is home to four generations of his family.
“About 14 or 15 people live here … some sleep in the kitchen,” Mr Briscoe said.
“I’ve got too many people, it’s way too crowded, too many grandchildren stuffed in here.
“It’s a bit hard … some people have to sleep outside.”
He was cautious about getting his hopes up about the outcome of the legal challenge.
“I’ve been reporting that my sewage is full and stinky, and it’s been there nearly since Christmas [with] no change,” he said.
Nearly one in five Australians are struggling to afford a house to live in, according to data from the ABC’s Australia Talks National Survey.
The problem is most pronounced in the NT where more than 37 per cent of residents said they were struggling to afford a home.
The Territory also has the highest rate of people who have been homeless, about 18 per cent compared to the average of 12 per cent.
Figures from the Northern Territory Council of Social Services suggest 81 per cent of homeless people are living in overcrowded homes.
Mr Briscoe is also in charge of night patrol in the community and often sees up close the social problems overcrowding can cause.
“We’ve got homeless people living around here,” he said.
“My brother-in-law, he’s living here with us for now. It’s not good … and yeah, [it] makes me sad.”
In a statement, Northern Territory Minister for Housing Gerry McCarthy said he recognised there had been historical neglect of remote housing, but said improvement works were underway in many communities.
“In Laramba 23 homes have been upgraded [since 2016] and three new homes are planned for this year, with work on two already underway,” he said.
He said more than a $124 million a year was spent on essential services in Indigenous communities, with 27 homes in Laramba set to receive major works.
Responding to the issues surrounding uranium in the water, he said the NT Government put “significant effort” into providing safe drinking water.
A Northern Territory Department of Housing spokeswoman said it was working closely with contractors to ensure repairs and maintenance issues were done in a timely manner.
‘Our kids need proper water’: Families plead for action over uranium in drinking water
Some of Australia’s poorest communities have been drinking water high in uranium, and residents have accused governments of ignoring the problem.
- At least three communities in central Australia have levels of uranium in drinking water that exceed health guidelines
- Dozens of other communities not meeting aesthetic guidelines, which ensure taste, feel and smell are up to standard
- Residents fear water could be harming them and say governments have failed to act
Many of us turn on the tap without a second thought — high-quality drinking water is supplied to most cities and regions across the country.
But in the Aboriginal community of Laramba, north of Alice Springs, drinking water contains more than double the recommended levels of uranium, and it’s been like that for a decade.
Billy Briscoe, a long-term resident, is deeply concerned about the impact that water is having on his family.
“The really important thing is about kids. Our kids need proper water, not with uranium. They need quality, really good water,” he said.
“We all drink the bore water … if there’s no water, how can you survive?
Official data obtained by the ABC’s 7.30 program shows Laramba’s water supply contains uranium at higher than 0.04 milligrams per litre (mg/L).
Australia’s drinking-water guidelines outline it should not exceed 0.017mg/L.
“The main toxic effect of short-term exposure to high concentrations of uranium is inflammation of the kidney,” according to the National Health and Medical Research Council.
“Little is known about the long-term exposure to low concentrations.”
Most communities in the Northern Territory rely on bore water, pumped up from an aquifer deep underground, which often contains high concentrations of naturally occurring minerals and contaminants — like uranium.
Laramba residents said their appeals for help had been overlooked.
“You have to write letters, you have to email it, but even then [action] don’t come in one day or two days, so you will have to wait one year or two years … It’s just a waiting game,” Mr Briscoe said.
The Australian Medical Association (AMA) said access to safe water was a basic human right and urged governments to invest in treatment facilities in remote parts of the country.
“It is difficult to understand how this hasn’t already been implemented and addressed,” the AMA said in a statement last year.