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Onitsha Ranked As The Most Polluted City In The World By WHO - Health - Nairaland

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Pollution: 10 Most Toxically Polluted Places On Earth. / Onitsha, Aba, Umahia And Kaduna Named In WHO Report As The Most Polluted Cities / WHO Rates Onitsha As “most Polluted City” In The World (2) (3) (4)

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Onitsha Ranked As The Most Polluted City In The World By WHO by CeoNewshelm(m): 10:13am On May 13, 2016
Two cities – one in Iran and another in Nigeria – can claim title because WHO measures pollution in two different ways.

The new WHO database of worldwide air pollution measures it in two different ways, and as a result two cities – one in Iran and another in Nigeria – can lay claim to the unenviable title of world’s most polluted city.

It all comes down to which minute particles, or particulate matter (PM), in the air are being measured. These particles are between 2.5 and 10 microns in diameter, roughly 30 times smaller than the width of a human hair.

The coarser PM10s include dust stirred up by cars on roads and the wind, soot from open fires and partially burned carbon from the burning of fossil fuels like coal, oil and wood. The particles are small enough to be inhaled deep into the lungs.


But the ultra-fine particles known as PM2.5s can only be seen with microscopes and are produced from all kinds of combustion. These are small enough to get from the lungs into the blood supply and are possibly more deadly because they affect the cardiovascular system.

Many cities in developing countries traditionally monitor only PM10s. But increasingly PM2.5 pollution is seen as the best measure of how bad air pollution is for health. Richer countries usually have higher levels of PM 2.5s, while low income countries have higher levels of PM10s. Both, says the WHO, are deadly.

Onitsha: highest for PM10s

In 2013, two people died of heat exhaustion after a six-hour gridlock on the city’s bridge over the river Niger. Cars and trucks on the main road to Lagos belch fumes from burning low-quality diesel, and the air often stinks of burning waste from rubbish dumps, the smoke from old ships on the river and discharges from the metal workshops.


But people did not expect Onitsha in Anambra state on the eastern bank of the mile-wide river Niger, to be named the most polluted in the world.

According to the WHO, an air quality monitor there registered 594 micrograms per cubic metre of microscopic PM10 particles, and 66 of the more deadly PM2.5s. Onitsha’s figures are nearly twice as bad as notoriously polluted cities such as Kabul, Beijing and Tehran and 30 times worse than London.

“We know pollution is very bad here. But this city must be much better than Lagos,” said Solomon Okechukwa, a sceptical Anambra state official, on Wednesday.



But Onitsha, say academics, is a textbook example of the perils of rapid urbanisation without planning or public services creating a sustained pollution assault on its water and air.

As a tropical port city which has doubled in size to over 1 million people in just a few years, it is frequently shrouded in plumes of black diesel smoke from old ships; it has no proper waste incineration plants; its construction sites and workshops emit clouds of dust and its heavy traffic is some of the worst in Nigeria.

A recent study of Onitsha’s water pollution found more than 100 petrol stations in the city, often selling low-quality fuel, dozens of unregulated rubbish dumps, major fuel spills and high levels of arsenic, mercury, lead, copper and iron in its water. The city’s many metal industries, private hospitals and workshops were all said to be heavy polluters emitting chemical, hospital and household waste and sewage.


“The level of pollution in Onitsha is getting increasingly serious,” said the authors.

However, the WHO also said on Wednesday that the pollution data from Onitsha was not necessarily reliable because it came from a single monitoring station.

“It is difficult to get accurate measurements in Africa. You can get super-high readings, but ideally the measurements should be done over a year to include different seasons and times of day. The reading in Onitsha may be representative but not altogether reliable,” said a WHO spokeswoman.

Zabol: highest for PM2.5s

Zabol, an eastern Iranian city on the border with Afghanistan, was once at the heart of a bustling ancient civilisation, close to where the very first piece of animation came from in the form of an intricate pottery bowl dating back 5,000 years that displays a goat in motion.

But the city is now a largely neglected area plagued by poverty - and pollution.

Every summer, as temperatures rise to staggering levels of 40C or even higher, Zabol is struck by what is locally known as “120 days of wind”, relentless dust storms from north to south.


But the disappearance in the early 2000s of a nearby wetland, Hamoun, has exacerbated the situation to an unprecedented extent. Over many centuries, the wetland was crucial to the development of the area, serving as its natural cooler. Now it has dried up and become a major source of dust in the air.

Zabol is only 45 minute’s drive away from Shahr-i Sokhta (Burnt City), a Unesco-designated world heritage site, home to the remains of a mudbrick city belonging to the bronze age.

In recent years, suffocating dust storms sweeping across Zabol have repeatedly disrupted life, closing down schools and government offices. Last year officials were forced to distribute free masks and national headlines such as “Zabol’s pollution reaching 40 times more than normal” have become part of daily life. Similar storms have also ravaged west of the country.

Mohsen Soleymani, the national project manager for preservation of Iranian wetlands, said pollution in Zabol was different from that in Tehran or Beijing, where it is linked to industry. “We are facing a critical situation in Zabol and the 120 days of wind period worsens the dust storms every year,” he told the Guardian.

“The drying up of Hamoun is the main reason behind this level of pollution but other factions have contributed to the situation such as bad management of our water resources in the past.”

According to Soleymani more than 700,000 job opportunities have disappeared because of the wetland’s situation. According to a report published by Iran’s Shargh daily, more than 500 people are diagnosed with tuberculosis in Zabol every year due to dust pollution, an unusual rate in the country. Hamoun’s crisis has forced people out of nearly 300 villages in the province, the Iranian daily reported.



Kaveh Madani, a senior lecturer in environmental management from Imperial College London, said: “The thirst for development in Iran increased as a result of the 1979 revolution, Iraq-Iran war and the international sanctions..

“Iranians continued developing infrastructure without a real concern about the long-term environmental consequences of their development plans, which normally lacked strong environmental impact assessments.”

Air pollution, dust storms, drying lakes and rivers, declining groundwater levels, land subsidence, deforestation, and desertification are on the menu of environmental products caused by unsustainable development, he said.

“Some of the problems, however, are not domestic products. Transboundary conflicts over Helmand (Hirmand) river with Afghanistan, resulting in water shortage and intensified dust storms have heavily impacted the lives of those living around the Hamouns wetlands,” he said.


http://www.theguardian.com/environment/2016/may/12/which-are-the-worlds-two-most-polluted-cities-and-why

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Mynd44: 10:15am On May 13, 2016
4 Nigerian cities made top 20.

#WeTriumphStill

8 Likes 2 Shares

Re: Onitsha Ranked As The Most Polluted City In The World By WHO by NewNigeriaMind: 10:30am On May 13, 2016
This is no news, we have always known the south east is the most backward region in Nigeria. Even the North with the poverty is cleaner.

Take Nimbo community for instance, the whole town is made up of mud houses with no tarred road and Enugu happens to be the Capital of SE, HOW MUCH MORE THE HELL HOLE CALLED ONITCHA angry

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by IRserveMyComent(f): 10:41am On May 13, 2016
Wow what then happens to Lagos How did they come by this assessment.
What was their criteria

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by TheNonce: 10:42am On May 13, 2016
grin



So if I call them "dirty, filthy, stinking ipob youths" now, I would be very accurate?


Solid!

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Joe4lv(m): 10:49am On May 13, 2016
@OP,please give us the criteria for this rating and not just using 'polluted'. Is it noise pollution, environmental pollution, etc.

You don't just post something without write-ups to back your claims.

Until you edit your post and give us the bases of those ranking, your post remains null and void.

I can even see umuahia there and I hope it is not what am thinking?

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by hmuhammad(m): 10:51am On May 13, 2016
Criteria pls or idonbelieveit

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by dunkem21(m): 10:53am On May 13, 2016
What Kind of pollution ..Air, water,soil, radioactive or noise pollution? ..

When I scrolled down to see Umuahia, I continued with my Kunu.

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by dunkem21(m): 10:54am On May 13, 2016
Joe4lv:
@OP,please give us the criteria for this rating and not just using 'polluted'. Is it noise pollution, environmental pollution, etc.

You don't just post something without write-ups to back your claims.

Until you edit your post and give us the bases of those ranking, your post remains null and void.

I can even see umuahia there and I hope it is not what am thinking?

I no see your post before commenting ..

People need education, seriously.

2 Likes

Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Agimor(m): 10:58am On May 13, 2016
Some persons will read and still not to understand cause they choose not to,they would start asking for criterial and under what basis they arrive at this conclusion.
Ps
Nobody should quote me cause I don't reply worthless quotes.

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Twistaray(m): 11:01am On May 13, 2016
grin grin grin grin

We ain't surprise.
We knew before now, the most dirty region and people nah grin
I no mention name ooo grin grin

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by SlayerReborn: 11:23am On May 13, 2016
Hmmm

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Sall(m): 11:28am On May 13, 2016
Onitsha at number one .Kaduna at number five and Aba and umuahia at number six and sixteenth respectively. And you guy comes to Lagos to boost of developing Lagos . hypocritical set of tribes. Charity they say begins at home.

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by NewNigeriaMind: 11:36am On May 13, 2016
The World Health Organisation (WHO) has tagged Onitsha, in Nigeria,the world’s most polluted city.
According to the report published by the World Economic Forum (WEF), Onitsha produced pollution “levels of nearly 600 micrograms per cubic metre of PM10s – around 30 times the WHO recommended level of 20 micrograms per cubic metre,” to get the unenviable rating.
Onitsha, along with three other Nigerian cities, Aba, Kaduna and Umuahia, featured in the top 20.

Following Onitsha on top of the list is Peshawar, Pakistan; Zabol, Iran; Rawalpindi, also in Pakistan; before Kaduna and Aba.
“The cost for countries is enormous. Air pollution affects economies and people’s quality of life. It leads to major chronic diseases and to people ultimately dying,” says Dr. Mari Neira, director of public health in WHO.


These are mostly categories:

Air Pollution and environmental pollution. with the effects on the people quality of Life.

Vanguard

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by superduperjay: 11:37am On May 13, 2016
Lagos used to be number one on this list as at 2005 or so but thanks to Fashola and his LAWMA/beautification crew. Though lagos is not 100percent but its much much better than the past. The peeps asking for criteria they mean pollution, land oo air oo sea ooo grin most probably land onitsha is dirty. lipsrsealed

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by emmalexabl(m): 11:42am On May 13, 2016
Omambala adigo mma crew., should come and hear this...

Chino and co...

4 Likes 1 Share

Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Bigprozzie: 11:42am On May 13, 2016
It seems the SE is now an epicenter of pollution, in addition to the problems of drug trafficking and crime plus the invasion of the region by Herdsmen. Very sad situation

The governors should wake up

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Karanka: 11:44am On May 13, 2016
I see a lot of folks here don't understand what the post is talking about. Being the most polluted city in the world doesn't generally denote dirtiness; rather,it is based on the particulate matters generated from the city which is in the air. These particulate matters come from sources like soots from vehicles,industries, construction activities,wood-burning etc - generally, industrialization. It's almost a problem with fast growing cities where a lot of industrial activities go on. Countries like China,Saudi Arabia etc have been battling with this for long. Air pollution poses health risks,which can in turn affect the economy of a place. The Nigerian cities affected should simply enact effective policies to mitigate against this,even as they continue with their industrial boom.

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by veraponpo(m): 11:44am On May 13, 2016
It means the only reason why we have not been getting such reports is because those cities were not ranked before. Now that they are captured, we now know the dirtiest cities in Nigeria.

Ntoor!

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Bigprozzie: 11:45am On May 13, 2016
Joe4lv:
@OP,please give us the criteria for this rating and not just using 'polluted'. Is it noise pollution, environmental pollution, etc.

You don't just post something without write-ups to back your claims.

Until you edit your post and give us the bases of those ranking, your post remains null and void.

I can even see umuahia there and I hope it is not what am thinking?

Are you blind or you cannot see the chart?

It states that it was measured by PM10 Particle Concentration-micrograms per cubic metre which suggests that it is atmospheric and therefore an air/environmental pollution rating



Just accept it, these are the facts

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by ola6: 11:48am On May 13, 2016
DIRTY PEOPLE!!! grin grin wink wink cheesy

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by ak47mann(m): 11:50am On May 13, 2016
Onitsha facing the same pollution just like china bejin this is what you suffer when a city are congested with numerous factories litter every corner hereby causing air pollution cool

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by babadee1(m): 11:50am On May 13, 2016
Joe4lv:
@OP,please give us the criteria for this rating and not just using 'polluted'. Is it noise pollution, environmental pollution, etc.

You don't just post something without write-ups to back your claims.

Until you edit your post and give us the bases of those ranking, your post remains null and void.

I can even see umuahia there and I hope it is not what am thinking?

You no see Kaduna there?

1 Like

Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Nobody: 11:51am On May 13, 2016
NewNigeriaMind:
This is no news, we have always known the south east is the most backward region in Nigeria. Even the North with the poverty is cleaner.

Take Nimbo community for instance, the whole town is made up of mud houses with no tarred road and Enugu happens to be the Capital of SE, HOW MUCH MORE THE HELL HOLE CALLED ONITCHA angry


No wonder they keep posting the same pictures over and over. cheesy cheesy

28 Likes 1 Share

Re: Onitsha Ranked As The Most Polluted City In The World By WHO by jidxin(m): 11:53am On May 13, 2016
dirty ipods later dey will say lagos is dirty nd polluted .....tufiakpa for dem shiooor

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by XtraSmooth404: 11:53am On May 13, 2016
These guys should just gerarahere for real meeehn...! They'll be ranking bullsh!!ts upandan every time.
Top 20 most corrupt countries
Top 20 most sexually active countries
Top 20 most illiterate countries
bla bla bla
Top 20 most polluted cities, is it your pollution ? angry

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by Bigprozzie: 11:53am On May 13, 2016
dunkem21:
What Kind of pollution ..Air, water,soil, radioactive or noise pollution? ..

When I scrolled down to see Umuahia, I continued with my Kunu.

Apart from Ipob activities, are you good at anything else?

You cant see the chart? It clearly states it measures PM10 Particle Concentration. You should have just googled it

Particulate matter (PM10) is the term for solid or liquid particles found in the air. Some particles are large or dark enough to be seen as soot or smoke. Others are so small they can be detected only with an electron microscope. Because particles originate from a variety of mobile and stationary sources (diesel trucks, woodstoves, power plants, etc.), their chemical and physical compositions vary widely. Particulate matter can be directly emitted or can be formed in the atmosphere when gaseous pollutants such as SO2 and NOx react to form fine particles.

Ipobs are illiterates

If it said Lagos was the most polluted, you wont argue

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by ZUBY77(m): 11:53am On May 13, 2016
I expect my SW friends to belive this without doubt as long as it's in SE.
I expect the SE guys to doubt.

Then we run in circles as always.

The reason why I like this news is that whether it is true or not, it will make people start working on cleaning Onitsha up.

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by mohaMADbuari: 11:53am On May 13, 2016
Perhaps they are yet to visit Ajegunle Lagos cool

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by seunlayi(m): 11:54am On May 13, 2016
This one na expo grin grin

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Re: Onitsha Ranked As The Most Polluted City In The World By WHO by MrkenOkonkwo(m): 11:54am On May 13, 2016
Lies!

Lagos-Ibadan Propaganda.

WHO are jealous of our progress because we are the ones that devoloped London, Wellington & Geneva for them. - Ipod youth

The same set of onitshaians will tell you that Ibadan & Lagos (The two biggest cities in W/Africa) are the dirtiest.

Bunch of dirty pigs!

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