Cath has been writing cutting edge and hard hitting articles or blogs for various magazines and websites over the years. Read them all here.

Sustainable Water after a Brexit – what would it mean for the UK

Cath asks what effect would a Brexit vote have on sustainable water legislation in the UK, and concludes that we should stay in.
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TW WESP is your shower killing the polar bears slide

Gudge theory – the new tool to get adolescents to shower shorter?

Cath explains ech2o's concept of 'gudge thoery' and finds out what will incentivise adolescents to get out of the shower quicker
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Time for passive house designers to address hot water demand

Time for passive house designers to address hot water demand

The PassivHaus standard has been instrumental in driving forward massive reductions in the energy required to heat a building. But it doesn’t address hot water demand. Cath thinks it should… Cath writes for passivehouse+ magazine
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Leaky Loos - a cool alliterative title for a serious problem

Leaky Loos – a cool alliterative title for a serious problem

Since internal overflows were allowed under the revised Water Regulations of 1999, a failing ball valve is no longer identified by a dripping (or running) overflow but merely runs to waste down the back of the WC cistern. A good thing surely? Well actually No, as Cath explains.
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Water softening – how best to do it?

Water softening – how best to do it?

This quarter’s column looks at where and why hard water forms in the UK, what on-site solutions are available and asks whether we should follow the Dutch example of centrally softening mains water.
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Total Washroom Control - An answer to water wastage in schools

Total Washroom Control – An answer to water wastage in schools

Cath considers how total washroom control has the potential to save large amounts of water in the education sector.
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Legionella - the risks and the solutions

Legionella – the risks and the solutions

Cath discusses the risks from Legionalla and ways of ensuring that it is less of a problem.
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Washing Hands in Cold Water

Washing Hands in Cold Water

Despite what it says in the Building Regulations, Cath argues the case for hand washing facilities in all public toilets to be cold water only to save on carbon emissions, without any detriment to health.
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Floods and SuDS

Floods and SuDS

Cath discusses WSUD and SuDS in light of the recent floods
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Finally – a water fittings standard for the UK?

Finally – a water fittings standard for the UK?

Cath gives the inside story on how the UK Govt has proposed that a water fittings standard may soon be deemed to comply with the water efficiency requirement for new homes.
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Getting the facts right - why empirical data matters

Getting the facts right – why empirical data matters

Cath argues that in the face of overwhelming evidence that certain key ‘facts’ about water use are wrong, we need to use robust and properly evidenced data when calculating the savings from water efficient upgrades, or estimating household water usage.
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Wastewater heat recovery – a better option than greywater recycling?

Wastewater heat recovery – a better option than greywater recycling?

Cath collects greywater from her shower and uses it to water her garden but discusses whether a better idea for mass roll out is harnessing the heat in wastewater as it runs to drain.
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A smarter way to use rainwater

A smarter way to use rainwater

Cath argues that it is important to decouple stormwater from the sewers, but that installing rainwater harvesting in new dwellings is not the solution.
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Natural Swimming Pools – Environmental Nirvana?

Natural Swimming Pools – Environmental Nirvana?

Cath critically appraises the environmental advantages of natural swimming pools after being asked to include one in a recent project.
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Was it an Olympic record for water use?

Was it an Olympic record for water use?

Cath investigates whether the Olympic Park delivered on its target to reduce water use by 40%
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Drought Images

The wettest drought on record or why we need to be smarter about water…

Cath talks about the "wettest drought on record”.
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Sewage treatment – what you should know...

Sewage treatment – what you should know…

Cath links water poverty, surfers against sewage, and decoupling stormwater from the sewers following a trip to Brighton.
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Changing the way we pay for water

Changing the way we pay for water

Cath looks at how the way we are paying for water in the UK is changing and what this may mean for consumers.
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Drinking Our Rivers Dry – did Panorama miss the point?

Drinking Our Rivers Dry – did Panorama miss the point?

Cath reviews Panorama’s investigation into over abstraction from the UK’s rivers and argues that simple behaviour change solutions can play a major role in reducing water stress in the UK.
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Should you drink bottled water?

Should you drink bottled water?

After being charged almost £3 for two small glasses of tap water in the Netherlands Cath investigates the bottled water market and the environmental effects of the industry.
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Water Efficiency and Drain Carry under the revised Scottish Building Regulations

Water Efficiency and Drain Carry under the revised Scottish Building Regulations

Cath evaluates the water efficiency requirements in the revised Scottish Building Regulations and welcomes the arrival of a simple and effective way to ensure self-cleansing flow rates in drains.
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What’s in a word?

What’s in a word?

Cath argues that the term 'blackwater treatment' is technically incorrect and politically suspect.
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The Paris sewers

The Paris sewers

The sewers in Paris are vastly different in design to those of London, yet both were conceived and built at roughly the same time. Cath highlights the differences and picks her favourite.
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Changes to Part G Building Regulations

Changes to Part G Building Regulations

Green Building Magazine. Cath Hassell casts a critical eye over the revisions to part G of the Building Regulations, especially the requirement for “water smart” new homes.
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Water and the Code for Sustainable Homes

Water and the Code for Sustainable Homes

The Code for Sustainable Homes is designed to reduce water consumption as well as CO2 emissions from a dwelling. But, as the article explains, this will not necessarily be the outcome in homes built to meet levels 5 and 6. Published in Green Building Magazine.
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The Green Electricity Illusion

The Green Electricity Illusion

An analysis of why specifying electric space heating and signing up to a green electricity tariff is one of the poorest design choices an architect can make. Written with David Olivier and published in Building for a Future (now Green Building) magazine, Spring 2006.
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