Environmental Monitoring in Johor Bahru
Stack emission, genset, ambient air, boundary noise, effluent and water monitoring — plus Clean Air Regulations submissions — scheduled, interpreted and followed through for factories across Johor.
Monitoring that ends in a decision
Most factories in Johor carry environmental monitoring obligations under the Environmental Quality Act 1974 — from their licence or written approval conditions, the Clean Air Regulations 2014, the Industrial Effluent and Sewage Regulations 2009, and DOE's noise guidelines. Each comes with its own parameters, frequency and reporting route.
The cost of getting it wrong went up sharply in 2024. The Environmental Quality (Amendment) Act 2024, in force from 7 July 2024, raised the fine for air pollution offences under section 22 to between RM10,000 and RM1,000,000, with imprisonment of up to five years.
Sampling is carried out by competent persons and analysis by accredited laboratories, as the regulations require. ProSafe works out what you actually need to monitor, schedules it, prepares the submissions and reads the results — so an exceedance becomes a correction rather than a filed report — for factories across Johor Bahru, Pasir Gudang, Tebrau, Senai, Kulai and Iskandar Puteri.
Air Emission Monitoring
Stack emission and genset monitoring under the Clean Air Regulations 2014, and ambient air quality around your site.
Written Notification & Declaration
WN and WD for chimneys and air pollution control systems, with design by a Professional Engineer.
Water & Effluent Testing
Industrial effluent, sewage, and drinking water against the applicable standards.
Boundary Noise & Waste Testing
Noise at your site boundary, and scheduled waste characterisation for correct classification.
What we monitor
Stack emission
Periodic monitoring once a year unless DOE directs otherwise, with the first test three to six months after a new facility starts operating.
Genset emission
Generator sets checked against the Clean Air Regulations 2014 and the conditions DOE attaches to them.
Ambient air quality
Pollutant concentrations around your premises, typically required by licence or EIA conditions.
Boundary noise
Noise measured at your site boundary against DOE's environmental noise limits for the surrounding land use.
Effluent & sewage
Discharge quality under the Industrial Effluent Regulations 2009 and Sewage Regulations 2009.
Drinking water & waste
Drinking water against the National Standard for Drinking Water Quality, and scheduled waste testing for correct classification.
Is this you?
- You have a boiler, oven, scrubber or chimneyand are not sure what monitoring it carries or when the last test was.
- You are installing or changing an emission sourceand need Written Notification at least thirty days before work starts.
- Your air pollution control system is runningbut the Written Declaration and as-built drawings were never submitted.
- You discharge effluentand your licence conditions require periodic sampling you have fallen behind on.
- Neighbours have complainedabout noise, smoke or odour from your site.
- You received monitoring resultsand nobody has worked out whether they are compliant or what to do about them.
One schedule for every obligation
Environmental monitoring obligations arrive from several directions at once — licence conditions, written approvals, the Clean Air Regulations, effluent standards, EIA conditions — each with its own frequency. Sites fall behind not because they ignore them, but because nobody holds one list.
We build that list from your actual licences, approvals and equipment, then schedule every test against it. Sampling is done by competent persons and analysis by accredited laboratories. Where a chimney or air pollution control system is being installed or changed, design and construction supervision are by a Professional Engineer, and we prepare the Written Notification and Written Declaration around it.
When results come back, we read them against the standard that applies to you. An exceedance gets a cause and a correction, not a line in a report. Monitoring sits alongside our wider environmental consultancy — scheduled waste, eSWIS and DOE licensing.
How monitoring runs
Obligation Review
We go through your licences, written approvals and equipment to establish exactly what must be monitored, how often and to which standard.
Schedule & Sampling
One monitoring calendar for the site, with sampling by competent persons arranged around your operations.
Results & Submissions
Accredited laboratory results interpreted against the applicable limits, and reports and submissions prepared for DOE.
Correction & Tracking
Any exceedance traced to its cause and corrected, then the next due date tracked so nothing lapses.
Environmental monitoring — common questions
How often is stack emission monitoring required?
Under regulation 16 of the Environmental Quality (Clean Air) Regulations 2014, where periodic monitoring applies it is done once a year unless the Director General directs otherwise. For a new facility, the first monitoring is due no earlier than three months and no later than six months after operation begins. Your licence or written approval conditions may set additional requirements.
What are Written Notification and Written Declaration?
Written Notification is the prior notice to DOE, given not less than thirty days before work that may create an emission source or change an existing one. Written Declaration is the confirmation, submitted within thirty days after the air pollution control system starts operating, that it was designed and built to specification, together with as-built drawings. The system must be designed and its construction supervised by a Professional Engineer.
Does ProSafe do the sampling and laboratory analysis?
No. Sampling is carried out by competent persons and analysis by accredited laboratories, as the regulations require, and air pollution control system design is done by a Professional Engineer. We scope what monitoring you need, arrange and schedule it, prepare the submissions, interpret the results and follow any exceedance through to correction.
Do generator sets need monitoring?
Gensets are fuel burning equipment under the Clean Air Regulations 2014, and DOE has a specific written notification form for generators. Whether periodic emission monitoring applies depends on the equipment's capacity, fuel and the conditions DOE attaches, so it should be checked against your actual units rather than assumed.
What are the penalties for air pollution offences now?
The Environmental Quality (Amendment) Act 2024, in force from 7 July 2024, raised them substantially. For an offence under section 22 on air pollution, the fine is now not less than RM10,000 and up to RM1,000,000, imprisonment of up to five years, or both, with a further daily fine where the offence continues.
Is boundary noise the same as a Noise Risk Assessment?
No. Boundary noise monitoring measures noise leaving your premises and affecting neighbours, under DOE's environmental noise guidelines. A Noise Risk Assessment measures noise exposure of your own employees under DOSH's Noise Exposure Regulations 2019. Many factories need both.
For background on DOE obligations, read our DOE compliance and scheduled waste guide.
Where we work
We arrange environmental monitoring for factories across Johor Bahru, Pasir Gudang, Tebrau, Plentong, Masai, Skudai, Senai, Kulai, Iskandar Puteri and Gelang Patah — including the heavier industrial zones in Pasir Gudang and Tanjung Langsat where stack and effluent obligations are most common.
Not sure what you have to monitor?
Send us your DOE licence or written approval conditions and a list of your emission sources. We will tell you what is due, how often and to which standard.