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Stuart Khan

@stukhan.bsky.social

Professor and Head of School of Civil Engineering at University of Sydney. Mostly water-related stuff. Views expressed here are my own and do not reflect those of my employer.

540 Followers  |  162 Following  |  86 Posts  |  Joined: 16.11.2024  |  2.2815

Latest posts by stukhan.bsky.social on Bluesky

Absolutely outrageous. Industries using PFAS are causing serious harm to drinking water sources and walking away from all responsibility. The costs and impacts fall to the drinking water suppliers and their customers. Needs to stop.

29.03.2025 04:09 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

For my own sanity, a little perspective on some claims made in this articleโ€ฆ๐Ÿงต

22.03.2025 12:56 โ€” ๐Ÿ‘ 4    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Very good discussion tonight at Mona Vale - and despite the reputation for NIMBYISM - lots of support for increased density; more social and affordable housing up our way.
AND for a Citizen's Assembly for more input on planning.

Good to hear!

26.02.2025 10:13 โ€” ๐Ÿ‘ 55    ๐Ÿ” 6    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1

Most people still think Nazis and fascists are bad, right? Is that still a reasonable assumption?

25.02.2025 11:11 โ€” ๐Ÿ‘ 13    ๐Ÿ” 2    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 0

Loved your article last week, Josie!

16.02.2025 08:13 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Sydneyโ€™s archaic sewerage system a โ€˜significantโ€™ source of microplastic pollution, CSIRO finds Malabar wastewater plant discharges 5.4bn to 120bn of microplastics each day, report says, prompting calls for more advanced treatment processes * Get our breaking news email, free app or daily news podcast It is not just human waste that is beingโ€ฆ

Sydneyโ€™s archaic sewerage system a โ€˜significantโ€™ source of microplastic pollution, CSIRO finds

15.02.2025 19:05 โ€” ๐Ÿ‘ 22    ๐Ÿ” 18    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1

horrendous!

10.02.2025 20:12 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Sewer fatberg of โ€˜grease and ragsโ€™ forces Bryan Adams to cancel Perth concert Singer was due to perform Sunday night but authorities worried large blockage could cause sewage to back up in venue toilets

Is this for real? What an absolute debacle! www.theguardian.com/australia-ne...

10.02.2025 10:05 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Parallel to hers.

04.02.2025 04:24 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Laborโ€™s dumping of Australiaโ€™s new nature laws means the environment is shaping as a key 2025 election issue Hopes for environmental law reform during the current term of federal government have been dashed, so what lies ahead for โ€˜nature positiveโ€™ next term?

Whoever forms government after the next federal election has a lot of important work to do! Our piece on the many failures to deliver environmental law reform and why it matters so much. theconversation.com/labors-dumpi...

03.02.2025 07:44 โ€” ๐Ÿ‘ 130    ๐Ÿ” 47    ๐Ÿ’ฌ 6    ๐Ÿ“Œ 6
Professor Khanโ€™s historic walking tour of Sydney

I really do! atse.org.au/events/profe...

03.02.2025 20:13 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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โ€˜Put it in Blacktownโ€™: Paddington residents upset new public toilet doesnโ€™t respect heritage The City of Sydney has been on a decade-long mission to double the number of public toilets, but some residents are not happy.

These poeple should join my walking tour of defunct historic public toilets (and other water & sewage related stuff) in the City of Sydney. Oxford Street was home to a grand underground public toilet (men only!), remains of which are still prominent at Taylor Square. www.smh.com.au/national/nsw...

03.02.2025 20:07 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Anyone who has ever been on a board, or done any governance training, would recognise that thatโ€™s massive overreach.

03.02.2025 04:59 โ€” ๐Ÿ‘ 52    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Decentralised wastewater treatment works well and is important in lots of places. But there are lots of challenges in a high density cityโ€ฆ lots of highly contaminated water to safely and reliably manage. โ€œDehydrateโ€ sounds attractive, but to do that quickly and securely is highly energy intensive.

02.02.2025 08:36 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Reality is โ€œsome of the solids and none of the contaminantsโ€ฆโ€. Yes, clearly there are better uses for water than dumping it into the ocean.

31.01.2025 21:23 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Pumping sewage into the sea has long been a Sydney thing โ€“ and even $32bn wonโ€™t change that Sydney Water plans to build new facilities inland and expand a pilot scheme to recycle wastewater for drinking, but will need outfalls for foreseeable future

Pumping sewage into the sea has long been a Sydney thing โ€“ and even $32bn wonโ€™t change that. www.theguardian.com/australia-ne...

31.01.2025 20:56 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

This wonโ€™t end well.

29.01.2025 05:17 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Yep, agreed.

28.01.2025 09:07 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

There seems a bit of confusion here. Anything could happen, but the current announcement doesnโ€™t seem to be about drinking water regulation, but regulations on wastewater discharge. Related, for sure, but not the same thing. Another reason why we shouldnโ€™t hitch our wagon to whatever the US does.

28.01.2025 08:03 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
2025 Young Australian of the Year: Katrina Wruck | Australian of the Year Awards | ABC Australia
YouTube video by ABC Australia 2025 Young Australian of the Year: Katrina Wruck | Australian of the Year Awards | ABC Australia

Congratulations to 2025 Young Australian of the Year, Dr Katrina Wruck. Dr Wruck develops innovative, green solutions for industrial and environmental challenges, focusing on emerging contaminants and sustainable practices. Great and very worthy selection! youtu.be/zj2o4lxNNJ4?...

25.01.2025 10:27 โ€” ๐Ÿ‘ 8    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Who needs a television in Sydney, when you have a skylight in the hallway?

25.01.2025 07:52 โ€” ๐Ÿ‘ 16    ๐Ÿ” 2    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1

Californians are not this stupid. Iโ€™m sure of it.

25.01.2025 02:30 โ€” ๐Ÿ‘ 2    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Forever chemical cancer cluster concerns - ABC listen The health detriments of PFAS have been a focal point of a major parliamentary inquiry, with residents coming forward claiming cancer caused by the forever chemical. The inquiry raises further questi...

Bernard Stewart, Scientific Advisor at Cancer Council Australia and Conjoint Professor at UNSW rather bravely telling ABC Radio that government inquiries and โ€˜common senseโ€™ may not be the best tools to evaluate cancer causality with environ contaminants such as PFAS. www.abc.net.au/listen/progr...

25.01.2025 02:18 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Christo strikes at University of Sydney!? Can you guess what has been so nicely wrapped here? (you have to be familiar with the USyd engineering precinct to have a chance at this one).

24.01.2025 07:44 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Bastard things, they are.

23.01.2025 05:18 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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The Guardian: E. coli has been found in balloons appearing on Sydney beaches. Australian scientists have studied mysterious balloons from the beaches of Sydney, Australia, and found bacteria in them that are found in feces. The Guardian writes about this.Local authorities had t...

Please tell me this article about โ€œballoonsโ€ was authored by AI. Still, i quite like this sentence: โ€œNevertheless, many experts, including civil engineering expert Stuart Khan, blame wastewater treatment plants for everythingโ€. australia.news-pravda.com/australia/20...

23.01.2025 05:13 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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โ€˜Drinking PFASโ€™: Water providers call for broad ban on โ€˜forever chemicalsโ€™ amid proliferation fears Fifty-one sites in NSW have significant PFAS contamination requiring continued monitoring and remediation, EPA tells Senate inquiry * Follow our Australia news live blog for latest updates * Get our breaking news email, free app or daily news podcastโ€ฆ

โ€˜Drinking PFASโ€™: Water providers call for broad ban on โ€˜forever chemicalsโ€™ amid proliferation fears

22.01.2025 08:06 โ€” ๐Ÿ‘ 40    ๐Ÿ” 14    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0
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Forever chemicals being found 'literally everywhere' Managing toxic forever chemicals already in the environment is becoming increasingly difficult and work needs to be done...

Not at all unhappy with this quote regarding the US EPA maximum contaminant levels for PFAS: University of Sydney professor Stuart Khan said it was a purely aspirational statement by an agency that had "effectively plucked a number out of the air"โ€ฆ www.canberratimes.com.au/story/887242...

22.01.2025 07:15 โ€” ๐Ÿ‘ 6    ๐Ÿ” 2    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Your home is full of these chemicals. Your tap water provider wants them banned The nationโ€™s drinking water providers have called on Australia to ban chemicals found in around 900 household products.

Your home is full of these chemicals. Your tap water provider wants them banned. www.smh.com.au/national/you...

22.01.2025 06:56 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Leading Expert Calls for Ban on PFAS in Products in Australia and Beyond Voice of the People

Leading Expert Calls for Ban on PFAS in Products in Australia and Beyond. hawkesburyapp.com.au/NewsStory/le...

22.01.2025 02:47 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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