A YEAR after signs went up on Pasir Ris beach warning swimmers against taking a dip in the waters there, little has changed.
Levels of a bacteria found in human faeces present in the sea there still exceed World Health Organisation (WHO) guidelines, a year-long National Environment Agency study has found.
It said that though water quality has improved marginally, swimming and activies such as water-skiing are still discouraged along the 3.3-km stretch of beach from the People's Association's Pasir Ris Holiday Complex to the Civil Service Aloha resort.
The National Environment Agency (NEA) said on Tuesday that an ageing sewage network was partly to blame for the poor water quality: Faeces is leaking into the waters off Pasir Ris beach from a 23-km network of pipes in the Tampines, Changi and Pasir Ris areas.
The discharge from 39 sewage treatment plants in areas such as Tampines and Changi is also to blame, it said.
In addition, waste dumped from moored vessels, and animals secreting waste into the waters there add to the problem.
Pasir Ris beach is the only one with poor water quality here, the study, which examined six recreational beaches, found.
The other beaches - Sentosa and Seletar Islands, Sembawang Park, Changi and East Coast beach - are suitable for swimming and other water sports, it said.
NEA caused a stir last year when it said that the adoption of more stringent water-quality standards based on new World Health Organization guidelines meant that swimming was no longer safe off Pasir Ris beach.
Since then, more officers have been sent to examine drains and rivers in the area that lead to the sea for possible discharges, a spokesman for the agency said. Enforcement action has also been stepped up, she added.
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