24 November 2025, 8:00 PM
Long-term water security for the Far North Coast has been a hot topic of discussion for the last four years, especially when you throw in the controversial Dunoon Dam into the mix.Not many, if any, Lismore App readers would know that this week the Department of Climate Change, Energy, the Environment and Water, otherwise known as DCCEEW, is holding community drop-in sessions seeking your feedback on long-term water security measures for the Northern Rivers.The first session was in the Tweed yesterday, with Murwillumbah and Byron Bay today, Mullumbimby and Ballina on Wednesday and Lismore and Casino on Thursday. More details at the end of the story.The NSW and Australian Governments have jointly committed $5 million to develop a preliminary business case. The Australian Government is contributing $2.5 million through the National Water Grid Fund.The NSW Government is preparing the preliminary business case to test the case for investment and narrow down options to a shortlist.DCCEEW says that climate change, population growth, and challenges to water access are increasing pressure on regional water security in the Far North Coast. The preliminary business case will complement existing water security projects that are being progressed by local government and county councils.At the moment, the project is in the early planning stage to see which, if any, options stack up. The department’s Water Group is leading the options investigation aligned with the Far North Coast Regional Water Strategy.The options being considered include:connecting the Tweed Shire and Rous County Council bulk water systemsregional desalination plants - large-scale or modularintegrating independent town water supplies into the bulk networkusing Toonumbar Dam to support town supplies, especially Casinolinking to the Southeast Queensland Water Grid.Apart from connecting pipelines between water sources, what is interesting about the above options is that Rous County Council (RCC) has already concluded a high-level study into desalination plants on the Northern Rivers, both permanent and temporary, and ruled them out as options. That report was released in August 2024.Andrew Logan, Group Manager Planning and Delivery for RCC, told the Lismore App that the study revealed prohibitive environmental and cost issues, looking at temporary and permanent desalination plants at a number of locations close to the coast."What we were looking at was what we call Stage Three projects under our Future Water Strategy, so the long-term options to get us out beyond 2060. They were the two options we looked at."I guess with the drought side of things, or bringing something in as an emergency drought source, it became clear during the work that it wasn't feasible. We needed two or three years basically to get a temporary desalination plant up and running, and obviously we don't have two or three years of notice before a drought is coming or enough storage in our water supply to manage through that period of time, so that is not a viable option from a drought side of things."In terms of a permanent plant, the real issues were around the Marine Park. This is a significant constraint along the coast from Byron, and we had to basically avoid that area and avoid any impact on that. Obviously, with a desal, you have to be able to get the water in from the ocean and into the treatment plant, but then you also have to discharge the brine, which is the salty water that comes out after the desalination process. So, we really couldn't have an impact on the Marine Park as a result of that. It made things like the pipelines and the tunnels to get the water to and from the desalination plant to be quite long and quite expensive."In terms of cost, Andrew said they were looking at $300 to $450 million for a permanent desalination plant that could produce 10 to 25 mega litres, which is a million litres per day.The locations identified were at Suffolk Park/Tallows Beach and Newrybar/Ross Lane for the permanent sites, and New Brighton Sports Field, Brunswick Heads Boat Harbour, Lighthouse Beach area, and Suffolk Park and Newrybar for the emergency sites.If desalination plants are not an option for the Northern Rivers, according to RCC, what other options are being explored?"We're continuing to investigate the Dunoon Dam. This is currently the work that our council has directed us to do is around the biodiversity of investigations from a preliminary side of things for the Dunoon Dam site and also the cultural heritage studies in consultation with the Aboriginal community around those. So, that's currently one of the options that we're looking at."We're looking at groundwater on the Alstonville Plateau, and that's both looking at the shallower basalt aquifer that is used up there, but also we have investigated a deeper source, which is known as the Clarence Morton Basin, and that's a couple of hundred metres below ground level up on the plateau."That's a decision that the council made, so that when we do use that water, it's not connected to that shallower aquifer, so the impact on the existing users in that shallow aquifer is nil. We're doing some of that work at the moment to get some of those deeper bores up and running."We've also taken on the ownership of the Marom Creek Water Treatment Plant and weir, which used to be owned by Ballina council. That exchange happened towards the middle of this year. Basically, what we're looking at is bringing the groundwater together from our bore holes and Ballina's old bore holes together with the surface water from the Marom Creek Weir, and that will be combined and treated in a new water treatment plant in the Russellton industrial estate at Wollongbar." The reservoir, only 50 metres away, will supply water to Alstonville, Wollongbar and Wardell. Andrew said that most of the time, the water supply for Alstonville, Wollongbar and Wardell will come from Rocky Creek Dam until the dam level reaches 95%, when the water treatment plant will be turned on. This is also the case at Emigrant Creek Water Treatment Plant near Ballina and Wilsons River source near Howards Grass.The Russellton Water Treatment Plant should be ready by about 2033. Another option for Rous is down at Woodburn."We've got some groundwater investigations on the way down there, so we've had some groundwater bores in place for decades, and we're now increasing the number of groundwater wells down there and looking at options as to how we might be able to utilise that water in the future. We don't have a treatment plant down there at the moment, but we're looking at options for that in the future that would service Evans, Woodburn, Riley's Hill and Broadwater. At the moment, those towns take their water from Rocky Creek Dam, like Alstonville, Wollongbar and Wardell.Rous County Council don't want to put all their eggs in one water basket. Having ruled out desalination plants, they are exploring how much water is in local bores and potentially building water treatment plants that can supply water to three or four towns during times of drought.The lowest level of Rocky Creek Dam was in 2003 when it dropped just below 20% triggering severe water restrictions. Rous's Future Water Project 2060 is looking at options to survive another severe drought period.Andrew concluded by saying, "We continue to look at opportunities as they come up."In the meantime, DCCEEW's drop-in sessions will be discussing desalination plants, and at this stage of its Far North Coast Regional Water Strategy, will not explore any dam options, not even in the wettest part of NSW.If you wish to attend the drop-in sessions, there is no need to book; just turn up. The drop-in sessions are:Tuesday 25 November 10 am – 12 pm at Murwillumbah Community Centre, 113 Wollumbin Street, MurwillumbahTuesday 25 November 4 pm – 6 pm at Byron Community Centre, 69 Jonson Street, Byron BayWednesday 26 November 10 am – 12 pm at Mullumbimby CWA Hall, Cnr Gordon and Tincogan Street, MullumbimbyWednesday 26 November 4 pm – 6 pm at Ballina Surf Club, 65 Lighthouse Parade, BallinaThursday 27 November 10:30 am – 12:30 pm at Lismore Library, 110 Magellan Street, LismoreThursday 27 November 3:30 pm – 5:30 pm at Casino Community and Cultural Centre, 35 Walker Street, Casino