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Discoloured water on Dublin beaches down to algal bloom, says council

Bathing bans are in place at beaches across Dublin Bay.

LAST UPDATE | 25 Jun 2019

BEACH The discoloured water at Sandycove. Flossieandthebeachcombers / Twitter.com Flossieandthebeachcombers / Twitter.com / Twitter.com

DISCOLOURED WATER SPOTTED at Dublin beaches is due to algal bloom and is not connected to an overflow from a wastewater treatment plant that prompted bathing bans across the bay.

Bathing bans are currently in place at Seapoint, Sandycove and the Forty Foot on Dublin’s southside in addition to Dollymount on the northside. 

Images circulated on social media earlier showed the water at some of the affected beaches had turned orange-brown. 

Dún Laoghaire Rathdown Council has since released a statement saying that the discolouration of the water was not due to the presence of raw sewage, but was instead down to the build up of a micro-alga called noctiluca scintillans.

The council said that this is “non-toxic”. 

A spokesperson said: “Further to reports in media and social media about orange water at Sandycove Beach and immediate surrounds today, we have taken samples of the orange coloured water at Sandycove this morning. Results this afternoon show that this is not raw sewerage but is a micro-alga called noctiluca scintillans. This is a benign, non-toxic, species – the ‘blooms’ are characteristically yellow, orange or orange/red.

The appearance of this algal bloom is not directly associated with the waste water overflows associated with the temporary bathing prohibition. We have been advised that this is a natural summer phenomenon in response to long day length, high nutrients and warm water.

The council said that the presence of the algae had been reported along the east coast for the past few weeks and was typical for this time of the year.

Further no-swim notices were already in place at Sandymount and Merrion beaches because of poor water quality before the latest bans came into effect.

Confirming the bathing ban at Dollymount yesterday Irish Water said in a statement: 

“Due to adverse weather conditions during a yellow weather warning event, which saw heavy rainfall in the Dublin area, there was a stormwater overflow from Ringsend Wastewater treatment plant. The stormwater overflow operated in compliance with plant design and regulations, and was fully screened and settled.”

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    Mute Thomas Rowe
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    Aug 10th 2019, 6:32 PM

    Here we go again…. when will it ever stop. However I can’t stop thinking that the world will blame Trump

    96
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    Mute Graham Wilson
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    Aug 10th 2019, 6:36 PM

    @Thomas Rowe: Well if the terrorists keep using his exact rhetoric in their manifestos what would you expect?

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    Mute Daithi Ó Raghallaigh
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    Aug 10th 2019, 6:42 PM

    @Thomas Rowe: Trump is not far right he not even a conservative , Trump is what ever will get him elected. He panders and pedals “whatever your having yourself ” as long as it gets him elected.

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    Mute Henry Gaynor
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    Aug 10th 2019, 7:06 PM

    @Daithi Ó Raghallaigh: Like most politicians.

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    Mute Seamus Murphy
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    Aug 11th 2019, 10:09 AM

    @Graham Wilson: so who do we blame for these attacks pre Trump?

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    Mute Johnny Conway
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    Aug 10th 2019, 6:45 PM

    How come we can’t give descriptions of criminals over here on the daily crimes? Whats the big secret? Are they all foreign nationals or somethings?

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    Mute Diarmuid Hunt
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    Aug 10th 2019, 6:50 PM

    @Johnny Conway: Why is your first question on the matter “are they all foreign nationals”? Do you hope that it is?

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    Mute Graham Wilson
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    Aug 10th 2019, 7:07 PM

    @Johnny Conway: It’s in the article, ‘an ethnic Norwegian’, white supremacist like Anders Breivik who murdered 69 mostly teenage kids in 2011.

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    Mute Johnny Conway
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    Aug 10th 2019, 7:12 PM

    @Diarmuid Hunt: no. But my point being that they gave a discription as a Norwegian white male but here they never give a description. Ever

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    Mute Diarmuid Hunt
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    Aug 10th 2019, 7:15 PM

    @Graham Wilson: It’s in his comment, he’s asking about why we don’t give descriptions of people in ongoing cases in Ireland.

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    Mute Diarmuid Hunt
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    Aug 10th 2019, 7:21 PM

    @Johnny Conway: Possibly because it’s a different jurisdiction with different laws, but I’m not sure.

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    Mute Rochelle
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    Aug 10th 2019, 6:59 PM

    Again, a white shooter not referred to as a terrorist. Why?

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    Mute Jack Simpson
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    Aug 11th 2019, 3:59 AM

    @Rochelle: don’t fret, incorrect terms are always used, e.g. the right are commonly labelled as far right, radical left are commonly called left or centrist, anti illegal immigration are commonly referred to as anti immigration, etc.

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    Mute Dave O'Keeffe
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    Aug 11th 2019, 7:24 AM

    @Jack Simpson: except not really, the right and the far right both exist. Traditional republicans are the right, tea party republicans are the far right. Traditional Democrats are the left, Bernie and Co are the far left. Centrist anti illegal immigration politicians are rarely heard from as their views aren’t seen as compelling. It’s far more often thst we hear from those wishing to shut down borders completely. One thing I’ve never heard though is a politician that was for the total opening of all borders everywhere. Yet its an accusation thrown at those wanting to help genuine asylum seekers by those that wish to stop all immigration frequently

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    Mute Jack Simpson
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    Aug 11th 2019, 5:52 PM

    @Dave O’Keeffe: 1) Who wants to shut down borders completely? 2) More and more politicians in the US and Europe are moving in the direction of open border policies. 3) I agree with the initial part. It’s frustrating when labels are used inappropriately, i.e. ‘far right’ or ‘alt right’ used instead of ‘right’. It is usually done by left leaning publications, presumably to discredit the person/group.

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    Mute Jimjamjim
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    Aug 10th 2019, 7:36 PM

    Fair play to whoever overpowered him, a hero, saved a lot of lives, far more good people on this earth than evil shites like that tulip

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    Mute Dean Anderson
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    Aug 10th 2019, 6:53 PM

    thankfully no one was killed &hopefully the islamists won’t carry out revenge attacks like they did in Sri Lanka &slaughter more innocent men ,women &children. let peace reign in our world

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    Mute Graham Wilson
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    Aug 10th 2019, 6:33 PM

    More White Supremacist terrorism, these guys are out of control everywhere. Let’s hope we don’t have any far-right attacks in Ireland.

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    Mute Graham Wilson
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    Aug 10th 2019, 6:35 PM

    Good article on these fanatics and their ignorant ideologies in The Irish Times today White genocide: A dangerous myth employed by racists (via @IrishTimes) https://www.irishtimes.com/opinion/white-genocide-a-dangerous-myth-employed-by-racists-1.3981739

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    Mute Philip Siggins
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    Aug 10th 2019, 6:48 PM

    @Graham Wilson: literally hundreds of horrific mass killing resultsing in the deaths of 10′s of thousands of innocents on every continent since 9/11 by Islamic terrorists and a couple of attacks by white supremacists and ” these guys are out of control”.

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    Mute Ashish Uday Lal
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    Aug 10th 2019, 7:04 PM

    @Philip Siggins: I think most terrorists gunning innocent people down, by virtue of their actions, are ‘out of control’, don’t you?

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    Mute Graham Wilson
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    Aug 10th 2019, 7:05 PM

    @Philip Siggins: A couple?! 73% of terrorist attacks in the U.S. alone were by White Supremacists in the last decade. https://time.com/5647304/white-nationalist-terrorism-united-states/

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    Mute Squiddley Diddley
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    Aug 10th 2019, 7:07 PM

    @Philip Siggins: Bit of an exaggeration there Philip, tens of thousands on every continent?

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    Mute Alan McArdle
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    Aug 10th 2019, 7:31 PM

    @Philip Siggins: ‘a couple of attacks by white supremacists’. You lose for that phrase alone. Talk about willfully dismissive.

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    Mute Jasun Ó Cearnaigh
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    Aug 10th 2019, 8:10 PM

    @Graham Wilson: its too easy to say black white its also cultural differences and the belief of errosion of a said culture

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    Mute Treasa
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    Aug 10th 2019, 6:27 PM

    Madness

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    Mute Brian Mc Elwaine
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    Aug 10th 2019, 11:47 PM

    Some in Drogheda might sympathise with how he feels after recent nights behaviour

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    Mute Brian Mc Elwaine
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    Aug 11th 2019, 5:09 PM

    @Brian Mc Elwaine: Or Birmingham

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    Mute Thomas Rowe
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    Aug 10th 2019, 6:34 PM

    Here we go again, will it ever stop. However can’t stop thinking the world will blame Trump!!

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    Mute Dave O'Keeffe
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    Aug 10th 2019, 11:10 PM

    @Thomas Rowe: interesting that you’re the first and second to mention him in relation to the article.

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    Mute Paddy Losty
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    Aug 10th 2019, 8:07 PM

    White supremacist killings are the single biggest danger to 1st world countries, more so than Islamic attacks ever were.

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    Mute Tim O'Brien
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    Aug 10th 2019, 10:02 PM

    @Paddy Losty: lol, the white suprematist, the new bogey man.

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    Mute Joe Lynch
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    Aug 11th 2019, 1:39 AM

    @Paddy Losty: bullshit. Stop watching CNN

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    Mute Barry O Driscoll
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    Aug 10th 2019, 7:14 PM

    Will it ever end

    7
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    Mute Daithi Ó Raghallaigh
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    Aug 10th 2019, 6:30 PM

    It would seem to me some of these Idiots want to be a social media stars, even if it kills them.

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    Mute Henry Gaynor
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    Aug 10th 2019, 6:42 PM

    @Daithi Ó Raghallaigh: True. And we’re probably adding to it with our online discussions. It would be hard not to though.

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