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People look at a polluted beach with objects some of which presumably were washed down the Dnipro River as the result of the Kakhovka dam destruction on June 13, 2023 in Odesa, Ukraine.
CNN  — 

Beaches in the southern Ukrainian region of Odesa have been closed off after filthy waters from a collapsed dam washed downstream, posing a “genuine threat” to local residents.

The toll from the collapse of the Russia-controlled Nova Kakhovka dam on June 6 has risen to 45, with both sides giving updates on those killed.

The collapse destroyed villages, flooded farmland and cut off power and clean water supplies to tens of thousands of people.

Floodwaters are receding, but debris washed down the Dnipro river – which flows into the Black Sea – turning Odesa’s coastline into “a garbage dump and animal cemetery,” according to Ukrainian authorities.

“The beaches of Odesa have been declared unsuitable for swimming due to a significant aggravation in the condition of water in open water areas (sea, estuary) and a genuine threat to the health of the city residents,” the Odesa municipality said in a Telegram post Sunday.

Odesa’s stretch of sandy beaches and holiday resorts were once popular with Ukrainian and foreign holidaymakers before Russia’s invasion.

The beaches have been largely abandoned by swimmers in recent months as mines continue to wash on the shoreline.

Authorities raised the alarm about the declining water quality in a Telegram post on Saturday, saying that lab tests had “identified infectious agents over the past week.”

Traces of salmonella, worm’s eggs and worm’s larvae were all found in the water which also “significantly” exceeded permitted levels of E. Coli.

“The presence of all of these biological pathogens in the water of open water areas in Odesa region, including the Black Sea, the Bilhorod-Dnistrovskyi Estuary, and the Danube River, constitutes a genuine threat to the life and health of the population,” the municipality added.

Authorities announced that Odesa residents were also prohibited from selling fish and seafood from “unidentified places of fishing” near markets and shopping centers.

Health authorities in the southern city of Mykolaiv on Sunday also warned residents not to drink faucet water, go swimming or fish after contaminants were found in the water there.

Cholera-like vibrio was detected in open waters of Mykolaiv, the regional center for Disease Control and Prevention posted on its official Facebook account Sunday, which could cause acute intestinal infections.

The disease control center also warned that ammonia levels in the Dnipro-Buh Estuary “exceeded the maximum permissible concentrations.”

Felipe Dana/AP
Homes are seen underwater in a flooded neighborhood in Kherson, Ukraine, Wednesday, June 7, 2023.

UN censures Russia

On Sunday, the United Nations condemned Russia for blocking humanitarian aid access to occupied areas of southern Ukraine that were affected by the dam collapse earlier this month.

“The UN has been engaging with the governments of Ukraine and the Russian Federation regarding effective delivery of humanitarian aid to all people affected by the devastating destruction of the Kakhovka Dam,” Denise Brown, UN humanitarian coordinator for Ukraine, said in a statement.

“The government of the Russian Federation has so far declined our request to access the areas under its temporary military control.”

The UN urged the Russian authorities to act in accordance with their obligations under international humanitarian law.

“Aid cannot be denied to people who need it,” Brown said.

Last week, Ukrainian President Volodymyr Zelensky called for international support to help rescue victims of the dam collapse in Russian-occupied territory and accused Moscow of not providing “any real help to the people in the flooded areas.”

Russia-backed officials in occupied parts of Ukraine have said the government will provide “maximum” support to the areas affected, and that humanitarian aid was being distributed.

On Thursday, Andrey Alekseenko, the Russia-backed head of the Kherson regional government, said humanitarian aid and monetary compensation were being given out in affected areas.

Alexander Ermochenko/Reuters
A flooded residential area following the Nova Kakhovka dam collapse in the town of Hola Prystan, in the Kherson region, Russian-controlled Ukraine, on June 8.

It remains unclear if the Nova Kakhovka dam was deliberately targeted or whether structural failure was behind its collapse.

Kyiv says Russia blew up the dam “in panic” ahead of a planned Ukrainian counteroffensive, while Russia accuses Ukraine of launching “mass artillery attacks” on the structure to deprive Crimea of water and provide a distraction from the battlefield.

At least 16 people are dead and 31 are missing in flooding from the collapse, Ukraine’s Ministry of Internal Affairs said Saturday.

It added that 3,614 people had been evacuated from the flooded areas “including 474 children and 80 people with reduced mobility.”

In a Telegram post the same day, Moscow-backed Alekseenko said 29 people had died in Russian-controlled territory.

AP
A neighborhood of Kherson, Ukraine, remains flooded Saturday, June 10, following the collapse of the Nova Kakhovka dam days earlier.
Evgeniy Maloletka/AP
Alyona Shkrygalova evacuates from a flooded neighborhood in Kherson on Friday, June 9.
Evgeniy Maloletka/AP
Tetyana, right, hugs her neighbor Hanna as they evacuate from a flooded neighborhood on the bank of the Dnipro River in Kherson on June 9.
Oleksandr Klymenko/Reuters
Emergency workers respond to a house damaged after Russian shelling in Kherson on June 9.
Vladyslav Musiienko/Reuters
Volunteers evacuate a local resident from a flooded area in Kherson on June 9.
Celestino Arce/NurPhoto/Getty Images
People evacuating Kherson arrive at a train station in Mykolaiv, Ukraine, on Thursday, June 8.
Evgeniy Maloletka/AP
Ukrainian servicemen use boats to evacuate people in a flooded neighborhood of Kherson on June 8.
Evgeniy Maloletka/AP
Ukrainian servicemen ride by boat through a flooded neighborhood in Kherson on June 8.
Alex Babenko/Getty Images
A woman helps a family rescue their belongings from flooding in Kherson on Wednesday, June 7.
Evgeniy Maloletka/AP
Houses in a flooded Kherson neighborhood on June 7.
Alex Babenko/Getty Images
Angelina Kopayeva, 12, looks at family photographs that were laid out to dry in her home in Kherson on June 7.
Roman Hrytsyna/AP
A woman is evacuated from a flooded neighborhood in Kherson.
Muhammed Enes Yildirim/Anadolu Agency/Getty Images
Dogs stand in floodwaters in Kherson on June 7.
Handout/Planet Labs PBC/Reuters
A satellite image shows the collapsed dam on Tuesday, June 6.
Evgeniy Maloletka/AP
Red Cross workers drive along a street in Kherson on June 6.
Evgeniy Maloletka/AP
Local resident Tetiana holds her pets, Tsatsa and Chunya, as she stands inside her flooded house after the destruction of the dam.
Ivan Antypenko/Reuters
Local residents stand on an embankment of the flooded Dnipro River as smoke rises from shelling on the opposite bank.
Vladyslav Musiienko/Reuters
Local residents after an evacuation of a flooded area in Kherson.
Alexey Konovalov/TASS/Handout/Reuters
A view shows the House of Culture on a flooded street in Nova Kakhovka.
Libkos/AP
People make their way through floodwaters in Kherson.
Felipe Dana/AP
People in, and on, an army truck as emergency responders work during evacuations.
Vladyslav Musiienko/Reuters
Local residents comfort each other following their evacuation from a flooded area.
Libkos/AP
Rescue workers attempt to tow boats carrying evacuated residents on June 6.
Ivan Antypenko/Reuters
The roof of a house in the flooded Dnipro River in Kherson.
Nina Lyashonok/AP
Evacuees wait for a train at a railway station in Kherson on June 6.
Alexey Konovalov/TASS/Reuters
A view of the breached dam on June 6.
Alina Smutko/Reuters
Local resident Oleksandra walks around her house on a flooded street in Kherson.

The area surrounding the dam has been one of the most heavily contested regions since Russia launched its full-scale invasion of Ukraine in February 2022.

The city of Kherson, which sits on the west bank of the Dnipro river, was liberated by the Ukrainian military in November after eight months of Russian occupation.

But much of the east bank of the river south of the dam remains under Russian control.

The reservoir supplies water to large swaths of southern Ukraine, including to the Crimean peninsula which Russia illegally annexed in 2014.