Most lodge wastewater discharges in South Africa fall under Section 39 of the National Water Act of 1998 — the General Authorisation (GA) — provided the discharge volume sits below 2,000 m³/day and the effluent meets the GA limits (DWS, 2013, as amended). The GA replaces the need for a full Water Use Licence, which is a 6–18-month process. The trade-off is that the GA is a running compliance regime, not a one-time submission.
What that means on site: when the DWS inspector arrives — typically every 18–36 months on a luxury site, more often after a downstream complaint — they ask for the same five documents.
- The original GA registration acknowledgement. The DWS reference number, the registered discharge volume, the registered discharge point coordinates.
- The last 12 months of effluent monitoring data. GA requires monthly sampling at a minimum: COD, ammonia, ortho-phosphate, suspended solids, faecal coliforms, free chlorine residual.
- The discharge volume record. Daily flows logged from a flow meter. Not estimated from pump runtimes — flow-metered.
- The sludge handling chain. Volumes generated, removal contractor, waste-receiving facility certificate. Three years retained.
- The corrective-action log. Every out-of-spec sample, what was done about it, when, and the resample that closed it.
The single most common failure mode is item 2. The sampling was monthly for the first six months after commissioning, then quarterly, then "when we remembered." The inspector reads twelve months of monthly data — they catch the gap inside thirty seconds.
The second most common failure is item 5. The lodge had an excursion in March. The operator phoned the supplier, the supplier adjusted the plant, the issue resolved itself in a week. None of this was written down. The inspector reads the lab report showing the excursion, asks for the action taken, and there is no document. That triggers a compliance notice — a 30-day notice to produce the documentation that should have been generated in real time.
The GA does not punish discharges. It punishes absent files. Run the file like an engineer; sleep at night.
