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this rainy season, huge trash islands sprang up all over Daecheongho, a source of drinking water for 5 million people in the central region. Green algae around the trash island and the edge of the lake are also worsening, and the water quality may be deteriorated.

Reporter Lee Yong-sik has been to the scene.

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Upstream of Daecheongho in Okcheon, North Chungcheong Province. On the lake, a trash island with a soccer field.

Garbage that has flowed into the rainy season is caught in a barrier and floats widely.

Waste tires, buckets, and even rubber boats stand between dry grass and branches.

[Jeongyongmun / Water Corporation office hall: 0.80 to 90% of the test vegetation were around rivers, 10-20% are estimated to have lost some also refuse regular vacationer]

also raised about where the upstream 3㎞ The trash that has been pushed is floating.

About 210 thousand tons of garbage flowed into the lake due to the heavy rain of 210 mm poured into the Daecheongho watershed last week.

It is about 35km away from the water intake tower, but it must be cleaned up in a hurry to prevent water quality deterioration.

[Park Won-ha/Daecheong-ho Garbage Collection Residents: When it sinks, it decays and decays, and the water is probably contaminated.]

There has already been light green algae around the garbage.

As the rain stops, the temperature rises rapidly, and the green algae spread, and thus, the green algae is covered at the edge of the lake.

The green algae in the water is so dense that you cannot see the front, but when you float the water, the green algae grains are brittle.

The Ministry of Environment and the Korea Water Resources Corporation decided to collect all the waste within two weeks, but blocking green algae that will spread in the heat is another challenge.