Lorong Halus Wetland

Lorong Halus was Singapore's landfill until 1999, and when Serangoon reservoir was created next to it the leachate in the ground became a problem. The answer was a constructed wetland: reed beds and ponds that draw the groundwater through and clean it biologically before it can reach the reservoir, opened in 2011 and doubling as a park. A red steel bridge crosses from Punggol and the site is a working piece of water infrastructure that people walk through.

What you actually see

• The reed beds - constructed wetland cells treating landfill groundwater.
• The red bridge - the steel crossing from Punggol Waterway Park.
• The reservoir - Serangoon reservoir the treatment protects.
• The dual function - infrastructure that works as a public park.

When to go

Year round; early morning is coolest and best for birds. There is very little shade. Afternoon storms are frequent.

Honest expectations

There is almost no shade and the site is exposed. Facilities are minimal. It is a treatment works first and the interest is largely in understanding what it does.

Nearby

Punggol Waterway is across the bridge, and Coney Island is north.