Disappointing public utility

From Republika

Tebing Tinggi in North Sumatra just received the national Adipura award from the government for the town's exemplary cleanliness. The trophy was presented to the public in a procession on Tuesday, June 8, 1994.

But since that day the customers of the PDAM Tirta Bulian state-owned drinking water company have been very disappointed.

On the day of the proud procession, at 6 p.m., a large PDAM water tank located on Jalan K.F. Tendean collapsed.

The huge reservoir was built at a high cost of hundreds of million rupiah with money obtained from the Ministry of Finance.

My question is: How could the structure collapse so easily?

Similar collapses of other state-owned or state-funded have also been reported. Can anyone tell me why this happens?

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