OpenGrantSector-specificSustainability

Water Efficiency Fund (WEF)

Administered by

· Last verified 23 Oct 2026

Co-funds high water users for water audits, pilot studies, recycling plants, water-efficient equipment and demonstration of innovative water solutions.

Support: Water efficiency assessment: 70% up to S$30,000. Pilot study: 70% up to S$150,000. Recycling/alternative water: lower of S$0.71/m3 PW, S$0.45/m3 NEWater, S$0.37/m3 IW saved (up to 15 yrs) or 50% of capital cost, cap S$5m. Water-efficient equipment: same incentive or 50% of TQC, cap S$300,000. IWSDF cap S$5m.
Maximum funding: S$5,000,000
How to apply: Hard-copy application to WEF Administrator, PUB (pub_conserve@pub.gov.sg for pre-consultation)
Apply before starting?: Yes, before any commitment or payment

Recent changes

Application form updated 2 Jan, 25 May and 31 Jul 2026; rates unchanged since 2023 enhancement (assessment/pilot to 70%, pilot cap S$150k, recycling cap S$5m).

Who is eligible

Registered and operating in Singapore
Premises using at least 1,000 m3/month (smaller premises can apply collectively); IWSDF needs 10,000 m3/month
Pilot/recycling: at least 10% water savings or 6,000 m3/year; equipment: at least 1,200 m3/year savings; IWSDF: at least 5% savings with emerging technology
Not for rainwater harvesting, water-efficient fittings, or measures required by regulation
Project starts only after PUB approval

Quick eligibility check

1. Does your premises use at least 1,000 m3 of water per month (or can you apply jointly with other premises)?
2. Will the project save at least 1,200 m3 a year (equipment) or 10%/6,000 m3 a year (recycling)?
3. Is the project NOT rainwater harvesting or simple water-efficient fittings?
4. Is the project NOT something you must do by regulation?
5. Have you NOT started the project before PUB approval?
6. Can you get at least 3 vendor quotations?

0 of 6 answered.

What it covers

Water meters, instrumentation, lab tests (assessment)
Pilot plant
Full-scale recycling plant
Water-efficient equipment and installation

How to apply

Consult the WEF Administrator
Complete the relevant section of the WEF application form
Attach endorsed supporting documents and 3 quotations
Mail one copy to PUB
Start only after Letter of Offer; complete within 12 months

Claims: Assessment: on completion, Water Efficient Building (Basic) certification and approved report. Pilot/recycling: 50% on commissioning, balance on report (recycling: year 3 with 75% of savings achieved).

Documents you need

WEF application form (relevant section) endorsed by CEO/MD
ACRA records dated within 1 year
6 months of water bills
Consultant proposal / project proposal written by applicant
Minimum 3 budgetary quotations on vendor letterhead
Meter installation schematic (if metering)
Declaration on other government incentives and no related-party transactions

Frequently asked questions

What is the Water Efficiency Fund?

Co-funds high water users for water audits, pilot studies, recycling plants, water-efficient equipment and demonstration of innovative water solutions.

How much funding does WEF give?

Water efficiency assessment: 70% up to S$30,000. Pilot study: 70% up to S$150,000. Recycling/alternative water: lower of S$0.71/m3 PW, S$0.45/m3 NEWater, S$0.37/m3 IW saved (up to 15 yrs) or 50% of capital cost, cap S$5m. Water-efficient equipment: same incentive or 50% of TQC, cap S$300,000. IWSDF cap S$5m.

Who is eligible for WEF?

Applicants must be registered and operating in Singapore. Premises using at least 1,000 m3/month (smaller premises can apply collectively); IWSDF needs 10,000 m3/month Pilot/recycling: at least 10% water savings or 6,000 m3/year; equipment: at least 1,200 m3/year savings; IWSDF: at least 5% savings with emerging technology Not for rainwater harvesting, water-efficient fittings, or measures required by regulation Project starts only after PUB approval

How do I apply for WEF?

Apply through Hard-copy application to WEF Administrator, PUB (pub_conserve@pub.gov.sg for pre-consultation). You must apply before the project starts or any payment is made.

What documents do I need for WEF?

WEF application form (relevant section) endorsed by CEO/MD; ACRA records dated within 1 year; 6 months of water bills; Consultant proposal / project proposal written by applicant; Minimum 3 budgetary quotations on vendor letterhead; Meter installation schematic (if metering); Declaration on other government incentives and no related-party transactions.

Sources

Information last verified on 23 Oct 2026. Grant rules change often. Always confirm with PUB, Singapore's National Water Agency before you apply.