Although water utilities have made great strides in reducing leakage, wasting water needs to become the next big social ‘no-no', ABB electromagnetic flow product manager Alan Hunt writes

This year, ‘flaming June’ singularly failed to live up to its reputation, with drizzle and downpours nearly every day, followed by the inevitable floods. It underlined the fact that we live on a damp group of islands and explained why the public think of the UK as having water, water everywhere and always enough to drink.

Yet we only need to go a few weeks without significant rainfall and the reservoirs start to look parched.

And, wherever you live in the world, water sources are under growing pressure. According to UN-endorsed projections, global demand for fresh water will exceed supply by 40 per cent in 2030. The culprits are a combination of climate change, human action and population growth. 
The consequences of growing demand and inadequate supply are already with us.

In late 2017, the city of Cape Town in South Africa faced an acute water crisis. Water levels in the dams that supply the city were down to less than 30 per cent of their capacity and people had started to talk about ‘Day Zero’ – the day when water supplies would be switched off and residents would need to queue for their daily ration. Cape Town was in danger of becoming the world’s first major city to run out of water.

The answer was severe water restrictions, cutting consumption in half. By the end of 2018, with further rains, the worst was over.

UK running on empty?

The problem is also hitting closer to home. London may not have the same water issues as Cape Town but there is still no cause for complacency. With an average annual rainfall of about 600mm – less than Paris and only about half that of New York – London draws 80 per cent of its water from rivers. The Greater London Authority recognises that the city is approaching capacity and is likely to have supply problems by 2025 and "serious shortages" by 2040. Hosepipe bans could become more common in the future.

Sir James Bevan, chief executive of the Environment Agency, recently issued a stark warning that unless we do something soon, England is on course for water shortages within 25 years. Rising consumption will meet decreasing supply at a point on the graph known as the ‘jaws of death’ – at that point, we simply will not have enough water to supply our needs.

The warning signs are already there in the form of the Water Exploitation Index (WEI), which identifies whether the rates of water abstraction are sustainable in terms of the amount of rainfall received. WEI is a ratio of mean annual freshwater resources to mean annual total abstractions of freshwater, expressed as a percentage.

Areas with a WEI of above 20 per cent are regarded as over-exploited. According to the Environment Agency, 12 areas in south-east England are already under serious water stress – the same level of water stress as countries such as Italy, Malta and Spain.

The problem can only grow as the climate changes. The latest UK Climate Projections suggest that the UK is likely to experience warmer summers and milder winters, wetter winters and a higher frequency of intense rainfall events, a greater number of severe weather events and more frequent drought and flooding events.

Consumers must do more

We can identify three issues affecting how much water is available for use.

The first is leaks. People often blame water companies if water is lost through leaks yet suppliers are making huge strides in controlling leakage and are committed to further stringent reductions.

Another reason is the quality of treated water returned to the rivers. This needs to be high to ensure minimum processing is required further downstream to make it potable. Since MCERTS was introduced by the Environment Agency 20 years ago, there has been a huge improvement in how utility and industrial companies measure their effluent water discharges.

The third main reason is the real elephant in the room – how much water consumers use and waste and users’ attitude to it.

Part of the problem is that improved housing standards and technological developments have led to increased bathing and washing options, which means increased water use. Add in the pressures of an increasing population and water used in the home accounts for over half of all public water supply use.

Home users see water as an inexhaustible supply and in fact many people resent having to pay for it at all. When water charges were introduced by the Irish government in 2014, there were mass protests at having to pay for what had previously been free. People need to think about whether they really need to wash the car every week, or whether their lawns actually do need so much watering.

For example, the average home uses 140 litres of water a day, 56 litres in the bathroom and 31 litres in the toilets. Nearly half of homes could make efficiency improvements to their toilet, either by using a cistern water displacement device or upgrading to a dual-flush toilet, which would save 12,500 litres per person per year – the equivalent to 150 average-sized baths full.

Water-efficient washing machines and taking showers instead of baths can all help. New water-efficient showerheads can produce water flows that feel far higher than they actually are - an easy way to save both water and energy.

Reduced-capacity baths can also help. A standard bath has a capacity of around 80 litres, so even a half-full bath uses a lot of water. Water-using appliances such as dishwashers or washing machines now carry the new Water Efficient Product Label and/or the Waterwise Recommended Checkmark.

If we could cut household consumption to just 100 litres a day and reduce leaks by 50 per cent, we would have enough water for 20 million people, without taking any more from the environment.

Getting these messages across to consumers requires the efforts of everyone involved in the industry. Many water companies are conducting household water audits and working with social housing providers and schools to educate children on water efficiency. Information on improving household water use is readily available to consumers through water utilities, consumer bodies and DIY chains while some water utilities offer devices for improving efficiency in homes.

The energy factor

Another factor is the energy involved in the business of providing and using water. Many people are concerned about energy production and the carbon dioxide emissions it produces, but water treatment and pumping is an energy-intensive business – for example, Scottish Water is the largest user of electricity in Scotland. A third of all electricity worldwide is used for pumping fluids, and water is bound to make up a large proportion of that. Every litre of water wasted means another litre must be treated and pumped, adding more carbon to the emissions burden.

A lot of water consumers may not even realise that their water use at home contributes to their energy bills, mostly to heat the water – heating water for use in our homes makes up about four percent of the UK’s total carbon dioxide emissions.

Possibly the route to spreading this attitude lies with the young. They have a great awareness of environmental issues but, for many, water use is not currently on their radar. They are more concerned with emissions of greenhouse gases, so linking energy use and water wastage could be the key to getting them on board.

We need a new attitude to water, one that sees it as a strictly limited resource that we guard jealously – as Sir James said, it should be as unacceptable to waste water as it is to blow smoke in a baby’s face or throw your plastic bags in to the sea.

Could the Government do more? Do we need a return to the old public information films from the 70s? With social media behind them, today’s equivalents could go viral and really bring the message home.

Today, many attitudes and practices we never thought twice about in the past are just not acceptable – we need to make wasting water another example of anti-social behaviour.

The leader of Cardiff city council has set out a £1bn transport vision for the Welsh capital.

A key part of the plan would be new city crossrail tram-train line running from east to west.

Council leader Huw Thomas said funding options would need to be looked at by Transport for Wales and Network Rail.

He also added that capital sums previously earmarked for the cancelled M4 Newport relief road must now be invested in South East Wales.

Key projects

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• Cardiff Cross Rail – a new light rail/tram line from east to west connecting major population centres and new suburbs in the west with Cardiff Central
• Cardiff Circle Line – a joined up complete orbital light rail/tram line linking large residential areas to the transport network
• A new park and ride at junction 32 of the M4 connected to the Circle Line
• A new Rapid Bus Transport Network using green and electric vehicles
• New, safe cycleways and walking routes linked to bus, rail and tram networks
• An integrated ticketing system allowing the user to move seamlessly from one transport mode to another.
• Making Cardiff a 20mph city

Thomas said: “It is clear we won’t deliver this overnight, but we are today bringing forward the council’s aspiration while fully recognising that we will have to work effectively with Welsh Government and other partners.

“We will also need to have a serious public conversation about how this vision can be funded.”

“We have consistently argued that the city’s future prosperity relies on an effective transport infrastructure, with seamless access to the UK’s motorway network, and free-flowing routes into, and around the city.”

The £350m London estate redevelopment project, located next to the £1bn Chelsea Barracks scheme, is the biggest in the council pipeline.

Phase one of the project is expected to cost around £97m and will be entirely council funded to allow it to decant residents from future phases.

The successful design and build contractor would start on site next year, delivering two residential blocks of over 200 mixed tenure homes.

The job will include the first of the new planned open public squares, setting the design quality and delivery intentions for the new Ebury.

Firms have been given until 7 August to express an interest on the web portal with the contract due to start at the end of January next year.

The full scheme is expected to take around 10 years to complete.

Ebury Bridge Estate is the biggest of 10 planned estate redevelopment plans within the London borough and was first earmarked for regeneration eight years ago.

The full project involves demolition of around eight buildings to make way for 750 homes, half of which would be affordable.

Bombardier today announced the Learjet 75 Liberty as its newest offering in the storied business jet brand. It’s “a rescoped aircraft that’s going to be cost-competitive from an operating cost perspective but also purchase cost perspective with Part 23 light jets,” Bombardier Business Aircraft spokesman Mark Masluch told AIN. To accomplish this, the Liberty will have fewer seats and options than the original Learjet, shaving about $3 million off the price tag while keeping the performance, the Canadian airframer said.

Bombardier hopes the lower price tag will drive a new segment of buyers to the Wichita-assembled aircraft, which has seen steadily declining deliveries over the past five years to just a dozen last year, according to data from the General Aviation Manufacturers Association.  

At $9.9 million, the Liberty sheds two seats in the forward cabin—for a total of six seats—replaced by two fold-down ottomans and fold-out tables, creating what it calls the “executive suite” for the two remaining seats in the forward section of the cabin, which is separated from the cockpit by a sliding pocket door. In the aft cabin, the four remaining seats are placed in a club configuration.

“You’re getting a light jet that not only flies faster, flies farther but [also] has the largest seated room in the cabin [in the light-jet category],” Masluch added.

The jet retains its 51,000-foot ceiling and its two Honeywell TFE731-40BR engines, each with 3,850 pounds of thrust. High-speed cruise remains Mach 0.79 but range improves by 40 nm to 2,080 nm with NBAA IFR reserves. Also standard on the Liberty is the Bombardier Vision flight deck with the recently announced upgrade to the jet's Garmin G5000 avionics, as well as Gogo ATG 4G wireless connectivity. Deliveries are expected to begin in 2020.

What was standard on the Learjet 75 will be optional on the Liberty, such as the APU and external lights, Masluch explained. “It’s a little bit more flexible approach to the program that allows us to get in the price range to more directly compete with light jets in the Part 23 realm,” he said, noting that the Liberty will retain the Learjet 75’s Part 25 certification.

Liberty essentially replaces what the market has known as the Learjet 75. Customers who would want a Learjet 75 would simply order the options that come with the Liberty, as well as an eight-seat cabin. 

“Having a product that’s competitive and aligned with market demand is going to really help stabilize the long-term manufacturing part of the Wichita site,” Masluch added. “This really kind of provides a lot of leg room in terms of our production capacities for Learjet aircraft with a product that’s rightly scoped for the market and competes more directly with light jets that are Part 23 certified.”