Engineering Procedures for ABC Waters Design Features (2024 Edition)
Current — verified Last verified: 2026-10-29
| Publisher | PUB, Singapore's National Water Agency |
|---|---|
| Country | Singapore |
| Category | Engineering Design Guidelines · Drainage and Environmental Engineering |
| Publication date | 2024 |
| Edition | 2024 Edition |
| Revision status | Current — verified |
| Language | English |
Description
PUB's detailed design, construction and maintenance procedures for ABC Waters design features, including sedimentation basins, swales and buffer strips, bioretention swales, bioretention basins (rain gardens), cleansing biotopes, bioengineering and constructed wetlands. It forms an integral part of the ABC Waters Design Guidelines.
Sections referenced by our calculators
Our own summary for navigation — not a quotation of the document. Read the source for the exact requirements.
- Section 1.5, Table 1.3 - interim stormwater treatment objectives (TSS 80%, TP 45%, TN 45% reduction of mean annual load).
- Section 2.4 - swale vegetation height relative to treatment flow level.
- Section 3.2.2 - features generally most effective on slopes of 1% to 4%.
- Section 3.3.3 - bioretention areas of about 4% to 5% of impervious catchment for 45% TN reduction; design curves based on the 5% upper limit.
- Section 4.3.1 - design flows; minor design flow is the 5-year ARI peak per the Code of Practice on Surface Water Drainage.
Copyright remains with the publisher. We link to the official source rather than hosting a copy.