1. Microbial Control of Water in
Heath Care Environments

2. Water Borne Microbes in Health Care Environments
• Water borne microbes remain a significant concern within the health care
environment and key problematic organisms are legionella species which
can cause legionaries disease and pseudomonas aeruginosa which can
cause skin and lung infections.
• Pseudomonas infections are relatively common with around 4000
reported cases per year and recent deaths in babies have focused
attention and resulted in greater guidance.

3. Water Treatment Biocide Requirements
• Efficacy against all microbes
• Biofilm removal and control
• Easy to apply
• Simple to measure
• Low hazard classification
• Cost effective product and equipment
• Regulatory approvals
• Broad compatibility
• Good environmental profile

4. NHS Health Care Case Study
• Building only 4 years old
• Several hundred outlets, with some low/no usage, and low turnover of
water
• Legionella problems from day 1
• Flushing and high temperature pasteurisation did not eliminate the problem
• Cold – Pseudomonas problems
• Hot – Legionella and Pseudomonas problems

5. The Treatment
• Dosing equipment installed by B & V Water Treatment
• Shock dosed for 2 days
• Down to maintenance dose after 48 hrs
• Chemical and microbial monitoring

6. The Results
Cold
Pseudomonas species

7. The Results
Hot

8. The Results
Hot

9. NHS Hospital/B&V Technical Paper
• Legionella completely eliminated by day 2 of treatment in all post flush
samples and virtually eliminated in all pre flush samples

10. Outcome
• Legionella eliminated from trial points
• Pseudomonas species and TVCs reduced to zero
• Abulox has brought the microbiological problems under control
• B & V Water Treatment is servicing over 150 NHS Hospitals

11. Benefits Summary
• High level of microbial control
• Biofilm removal
• Fast rate of kill and no resistance
• Low use concentration
• Simple to apply and measure
• Stable solutions
• Good safety and Environmental Profile
• Regulatory Approvals
• Cost effective control
• Improved patient, visitors and staff safety