E. coli measured at 63,000 CFU/100 mL.
- Case studies
- Blue Valley Estate — Dam recovery
Blue Valley Estate — Dam recovery
The dam needed to be brought within safe bacterial limits without draining, excavation or chemical treatment, on an estate where residents interact with the water directly.

Project overview
Site challenge and treatment summary.
The dam needed to be brought within safe bacterial limits without draining, excavation or chemical treatment, on an estate where residents interact with the water directly.
- Initial problem
- A residential estate dam was carrying heavy bacterial contamination.
- Baczyme product used
- Baczyme Sewage Liquid+
- Dosage
- 1 litre of Baczyme Sewage Liquid+ concentrate was dosed into the dam daily, as part of a twelve-month biological treatment programme.
- Treatment period
- Twelve-month treatment programme
Site conditions
What Baczyme was responding to.
- The estate dam had E. coli levels of 63,000 CFU/100 mL at the start of the programme.
- Treatment ran over twelve months.
Treatment objectives
What the programme aimed to support.
- Reduce E. coli contamination to safe levels
- Restore the dam using biological treatment only
- Track results independently through a SANAS-accredited laboratory
Before and after
Reported project progression.
These notes summarise the before-and-after information available for this specific Baczyme project.
E. coli measured at 1 CFU/100 mL — a 99.998% reduction, verified by Aquatico (SANAS T0685).
Reported outcomes
E. coli fell from 63,000 CFU/100 mL to 1 CFU/100 mL — a 99.998% reduction, verified by Aquatico (SANAS T0685).
Test results or documents
Verified by Aquatico, a SANAS-accredited laboratory (SANAS T0685).
Project significance
Why this project matters.
This project shows sustained biological recovery of a residential dam over a full twelve-month cycle, verified by independent laboratory testing.
Related product
Baczyme Sewage Liquid+
Managing a residential estate dam?
Request a site assessment to discuss a biological treatment programme for your dam.
Discuss a similar project