Effluent Discharge Log

Educational guidance on registers and logs — what each records, who maintains it, what it typically contains and how long it is generally kept. Informational only — template examples, not official documents or legal advice; a register documents activity, it does not by itself prove compliance, and employers remain responsible.

What an effluent discharge log is

An effluent discharge log records liquid discharges from a site to sewer or water — trade effluent, process water or treated wastewater — with the volumes and any monitoring, so discharges can be tracked against the conditions that apply.

This page is an educational overview with a simplified example. It is not an official template, not jurisdiction-specific and not legal advice — discharge consents, limits and monitoring vary by country and receiving environment.

Purpose

• Record discharges of effluent and wastewater.
• Capture volumes and any monitoring results.
• Compare results with any consent or limit.
• Flag results that need action or investigation.

Who maintains it

• An environmental or process lead keeps it current.
• Sampling may be in-house or by a competent contractor.
• Results are reviewed against any discharge consent.
• The employer decides the regime and who is responsible.

When it is used

• When discharges occur or are sampled on the agreed schedule.
• When a result is outside a consent limit.
• During environmental audits and inspections.
• After a process change that affects effluent.

Typical fields

• Date, discharge point and parameter monitored.
• Volume and the result or reading.
• The consent or limit it is compared with.
• Whether it is within limit and any action taken.
• Who carried out the check and sign-off.
• Example columns only — adapt to your discharges and the applicable law.

Common mistakes

• Discharging without checking the consent conditions.
• Recording results but not comparing them to limits.
• Not acting on or reporting an exceedance.
• Letting an unauthorised substance reach the discharge.

Document workflow

An effluent discharge log works with the water and environmental chain: the discharge is assessed against any consent, results are logged here, and an exceedance feeds the environmental-incident register and corrective action completed afterwards. It links to the water quality and spill records.

See the related documents below for what is commonly used with and completed after an effluent discharge entry.

Retention (high level)

Discharge records are generally kept for a period set by the applicable law, any consent and the employer’s obligations. This page does not state a required period — confirm with the applicable law and the official authority.

Completing and sharing as a PDF

Results are often held in a system and exported to PDF for reports and audits. Exporting to PDF supports the record; it does not satisfy any consent or reporting duty by itself.

Employer checklist

• Discharge only within any consent and its conditions.
• Sample and compare results against the limits.
• Act on and report exceedances as required.
• Keep unauthorised substances out of the discharge.

Worker notes

• Never tip chemicals or waste to drains or watercourses.
• Report anything unusual entering a discharge or drain.
• Follow the procedures that protect the discharge.

Country considerations

Discharge consents, limits, monitoring and reporting vary by country and receiving environment, and the official authority differs. This page is general and high-level — not a statement of any country’s law and not legal advice.

Confirm current requirements with the official authority for your country and a qualified professional.

Who is responsible

The employer is responsible for keeping its discharges within consent and for compliance. This page is an educational overview with a template example; it does not make a workplace compliant and does not transfer responsibility.