SSOC 2024 unit
Manufacturing Verified · 21 Mar 202431324
Water treatment machine operator (waterworks)
Water treatment machine operator (waterworks) operates and monitor treatment plant equipment to purify water for human consumption and industrial use. He/she controls the flow of raw water into plant by starting and regulating operation of electric motors, pumps and valves, adds specified amounts of chemicals to disinfect, deodorise and clarify water, or adjusts automatic devices which admit chemicals in controlled dosages. He/she starts agitators to mix ingredients and filters water through filtering material. He/she pumps purified water into water mains, monitors control panel meters and gauges to determine rate of flow and other factors.
Level
unit
Mapped ISCO
1
Source
SingStat
Official data
| Official name | Singapore Standard Industrial Classification (SSOC 2024) |
| Issuing authority | Department of Statistics Singapore (SingStat / DOS) |
| Tax authority | Inland Revenue Authority of Singapore (IRAS) (IRAS) |
| Purpose | Classifies occupations in Singapore for labour statistics, workforce planning, and international reporting. |
| Active version | SSOC 2024 (21 Mar 2024) |
| Hierarchy level | Unit (final leaf, 5-digit) |
| Source | https://www.singstat.gov.sg/standards/standards-and-classifications/ssic |
| Prior versions | SSIC 2020, SSIC 2015 |
Definition
Water treatment machine operator (waterworks) operates and monitor treatment plant equipment to purify water for human consumption and industrial use. He/she controls the flow of raw water into plant by starting and regulating operation of electric motors, pumps and valves, adds specified amounts of chemicals to disinfect, deodorise and clarify water, or adjusts automatic devices which admit chemicals in controlled dosages. He/she starts agitators to mix ingredients and filters water through filtering material. He/she pumps purified water into water mains, monitors control panel meters and gauges to determine rate of flow and other factors.
Tasks
No tasks listed.
Examples
Under this unit
• Water works purifying plant operator
Elsewhere
No exclusion examples found.
When you need this code
Job classification
Employers use SSOC for workforce reporting and MOM surveys.
Labour statistics
SingStat collects occupation data for labour force reports.
Immigration
Work pass applications may reference SSOC for skills evaluation.
International reporting
Maps to ISCO-08 for ILOSTAT and cross-country comparisons.
Hierarchy
Correspondence tables
SSOC 2020
- 31324 — Water treatment machine operator (waterworks)
ISCO-08
- 3132 — Incinerator and water treatment plant operators
Compliance risk score
Compliance risk score
Low friction
5 of 6 factors low-risk
- ✅ Verified source ≤90d
- ✅ ISIC mapping available
- ✅ SSIC 2020 migration mapped
- ✅ Full hierarchy chain
- ✅ GST registration applicable
- ⚠️ Factory registration?
Step-by-step guide
1. Confirm occupation
Water treatment machine operator (waterworks) operates and monitor treatment plant equipment to purify water for human consumption and industrial use. He/she controls the flow of raw water into plant by starting and regulating operation of electric motors, pumps and valves, adds specified amounts of chemicals to disinfect, deodorise and clarify water, or adjusts automatic devices which admit chemicals in controlled dosages. He/she starts agitators to mix ingredients and filters water through filtering material. He/she pumps purified water into water mains, monitors control panel meters and gauges to determine rate of flow and other factors.
2. Check classification
Verify this SSOC unit matches the actual job scope and tasks performed by the worker.
3. Report via employer
Employers report SSOC codes in MOM surveys and workforce statistics submissions.
4. Stay updated
SSOC revisions occur periodically. Check SingStat for the current version before classification projects.
Applicable taxes & forms
Personal income tax
Rate: Progressive 0% – 24% progressive
Employers file IR8A for employees. Self-employed file Form B/B1 via myTax Portal annually.
CPF contributions
Employer contributions apply for Singaporean / PR employees. Self-employed contribute to MediSave.
Applicable filings
Form C
myTax Portal · Annual (by 30 Nov for paper, 15 Dec e-file)
Full corporate income tax return for companies. Requires audited/unaudited financial statements.
Form C-S
myTax Portal · Annual (by 15 Dec)
Simplified return for companies with revenue ≤ SGD 5M and deriving income taxed at prevailing corporate rate.
Form C-S (Lite)
myTax Portal · Annual (by 15 Dec)
Simplest return for companies with revenue ≤ SGD 200K.
Form F5
myTax Portal · Quarterly
GST return. GST-registered businesses must file within 1 month of quarter end.
Estimated Chargeable Income (ECI)
myTax Portal · Within 3 months of FYE
Compulsory for all companies. IRAS issues Notice of Assessment based on ECI.
Related professions
Furniture manufacturer
Designs and produces residential and contract furniture.
Typically needs
Enterprise SG design grants, SCDF fire certificate for factory, NEA waste disposal.
Printing press owner
Operates offset, digital, and large-format printing equipment.
Typically needs
NEA emission control for solvent-based inks, PDPA for customer data handling.
Apparel and textile manufacturer
Cuts and sews garments for local and export markets.
Typically needs
Enterprise Singapore trade schemes, MOM foreign worker quota compliance.
Electronics manufacturer
Produces semiconductors, PCBs, or consumer electronics.
Typically needs
EDB Pioneer Certificate incentives possible, MOM factory registration, NEA emission permit.
Pharmaceutical plant manager
Oversees drug substance or drug product manufacturing.
Typically needs
HSA GMP certificate, MOH controlled drug licence, NEA hazardous substance permit.
Related codes
Major group
3 ASSOCIATE PROFESSIONALS AND TECHNICIANSMinor group
313 PROCESS CONTROL TECHNICIANSSibling units
Alphabetical index entries
Frequently asked questions
About this SSOC unit and the Manufacturing occupational cluster
What NEA environmental permits are needed?
Manufacturing facilities with emissions, effluents, or hazardous substances need permits from the National Environment Agency (NEA), including air emission and trade effluent licences.
Are there fire safety requirements for manufacturing premises?
SCDF fire safety requirements apply, including fire certificate requirements for certain types and sizes of industrial premises.
What product safety standards apply to manufactured goods?
Enterprise Singapore and specific regulators set product safety standards. Consumer goods may be subject to Consumer Protection (Consumer Goods Safety Requirements) Regulations.
Do I need a factory registration from MOM?
Factories using machinery or employing a certain threshold of workers may require registration with the Ministry of Manpower under the Workplace Safety and Health Act.
What is SSIC and why does it matter?
The Singapore Standard Industrial Classification (SSIC) is the national system for categorising business activities. It is mandatory at ACRA registration and is used by IRAS, MOM, and other government agencies for tax, licensing, statistical, and policy purposes.
Do I need to register with this SSIC code?
Every business entity registered with ACRA must select at least one SSIC code that best describes its principal economic activity. You can declare up to two codes — one primary and one secondary — via BizFile+.
Official sources
What to do next
Data source: Department of Statistics Singapore (SingStat / DOS) (https://www.singstat.gov.sg/standards/standards-and-classifications/ssic). Occupation data mirrored from SSOC 2024 workbooks. Not the authoritative source.
Last refresh: 21 Mar 2024. Version: SSOC 2024.