DOE Written Notification (Pemberitahuan Bertulis) for effluent treatment systems

What Pemberitahuan Bertulis is

Under the Environmental Quality Act 1974 and the Environmental Quality (Industrial Effluent) Regulations 2009, an occupier may not install, resite or alter equipment for the treatment of industrial effluent without written notification to the Director General of Environmental Quality. That notification is the Pemberitahuan Bertulis.

It is not a formality issued after the fact. It is granted on the basis of a design you submit before you build, and DOE assesses whether that design can actually achieve the discharge standard applicable to your site — Standard A or Standard B depending on where your discharge point sits relative to water supply intakes.

Two consequences follow, and both catch people out. Building first and applying later puts you in breach regardless of how well the plant performs. And a notification made for one design does not cover a plant you subsequently modified.

When you need one

Why applications get rejected

In our experience the reasons cluster into a small number of recurring problems.

The design basis does not match the effluent

A submission built on generic loading figures rather than the site's actual effluent characteristics is the commonest failure. DOE will ask how you arrived at the influent COD, BOD, suspended solids, oil and grease, pH range and flow. If the answer is a supplier's standard table, the application stalls.

Design flow is not defensible

Design flow has to be traceable to something — production volumes, water balance, wash-down frequency, shift patterns. A round number with no derivation invites a query. So does a design flow that leaves no margin for the peak your process actually produces.

Drawings do not match the narrative

Process flow diagram, P&ID, general arrangement and the written process description have to tell the same story. Where a plant has been modified over the years, the as-built condition frequently no longer matches the drawings on file, and a submission that carries forward the old drawings will not survive an inspection.

No demonstration that the design meets the standard

It is not enough to describe the unit processes. The submission needs to show, stage by stage, the expected removal across each unit and the resulting final effluent quality against the applicable standard.

Sludge is an afterthought

Sludge handling, dewatering and disposal route are part of the design, and the disposal route has to be consistent with your scheduled waste arrangements. A submission that stops at the discharge point is incomplete.

No competent person

Operation of an industrial effluent treatment system requires a certified competent person — CePIETSO for biological processes, or for physical-chemical processes, depending on the plant. A submission that does not address who will operate the plant raises an obvious question.

What a submission contains

Scope varies with the plant, but a complete application generally includes:

• Site and process description, including the production activities generating the effluent
• Effluent characterisation — measured, not assumed — with the sampling basis stated
• Water balance and derivation of design flow, including peak factors
• Process design calculations for each unit operation, with expected removal efficiencies
• Predicted final effluent quality against Standard A or B, parameter by parameter
• Process flow diagram, mass balance, P&ID and general arrangement drawings
• Equipment schedule and specifications
• Sludge generation estimate, handling method and disposal route
• Chemical storage, dosing and containment arrangements
• Monitoring and sampling point locations
• Operation and maintenance arrangements, including the competent person
• Contingency and bypass provisions, and how an upset is managed

How we work on these

We treat a Pemberitahuan Bertulis as an engineering problem with a documentation output, not the other way round. On a recent engagement at a container-wash facility in Port Klang, the plant had been installed years earlier to a 2017 design, had drifted out of compliance, and needed both physical restoration and a fresh submission. The sequence was:

1. Establish the real condition. A structured site assessment against the original design drawings, documenting every deviation — in that case a dozen distinct findings, from failed equipment to configuration changes never recorded.
2. Re-establish the design basis. Characterise the effluent as it is now, not as it was assumed to be, and rebuild the water balance from current operations.
3. Decide what the plant should be. Restore to the original design, or redesign around what the site now produces. This decision drives everything downstream, and getting it wrong is expensive.
4. Produce the submission. Drawings that match the plant as it will be, calculations that support the predicted effluent quality, and a narrative consistent with both.
5. Carry it through DOE. Respond to queries, attend site inspection, and close out conditions attached to the approval.

We do not sell equipment as part of this. Where a plant genuinely needs new hardware we will say so and help you specify it, but the diagnosis comes first and it is independent of who supplies the kit.

Common questions

How long does approval take?

It depends on the state DOE office, the completeness of the submission and whether a site inspection is required. A complete application that raises no queries moves considerably faster than one that generates two rounds of clarification, which is the main thing within your control.

We already built the plant. What now?

Tell us. It is a more common situation than people assume, and it is recoverable, but the approach differs from a normal application and the sooner it is addressed the better.

Can you work from our existing drawings?

Yes, and we prefer to. But we verify them against the plant as built before relying on them. On older plants the two rarely match.

Do you handle the scheduled waste side as well?

Yes. Sludge from an effluent treatment plant is scheduled waste, and the disposal route forms part of the submission. We hold certification in scheduled waste management and handle both together.

Is the free initial read really free?

Yes. Send the rejection letter and drawings and we will tell you what we think the problem is. If the fix is something you can do yourselves, we will say that too.