WATER QUALITY SURVEILLANCE
TAKE CONTROL OF YOUR NETWORK
WITH ATP 2G!
Within the water industry (reclamation, treatment, distribution, purification, etc.) and for all activities that use water-based resources (processing water, cleaning, disinfection, rinsing, heating, steam production, cooling, etc.), the biological burden of the water is a key criterion for quality.
An increase in the biomass is a general quality indicator that can signify:
• a health risk: the presumed presence of micro-organisms that are pathogenic to humans;
• a sensory risk: probable introduction of unpleasant flavors;
• a technical risk: potential for introducing biofilms or harmful micro-organisms into processes or equipment (corrosion, blockages, scaling, biofouling, etc.).
Even though ATP 2G cannot replace required analyses (for example, analyses required for water that is intended for human consumption), it is nevertheless relevant for real-time tracking of overall water quality in industrial applications or facilities due to its many advantages:
• speed of use: allow 2 to 4 minutes per measurement, from sampling to reading the results;
• cost: the solution is less expensive than other methods (genetics, culturing on solid media, cytometry, etc.);
• simplicity: quantification does not require any specific biological knowledge and can be performed in any work environment;
• portability: the luminometer (which can be used offline in the field) and the kits can be easily transported to different sites using a simple satchel or bag;
• reliability: the quantification method identifies all living cells and generates a reliable measure of the total flora.
Typical quantification methods for microbiological burden, whether traditional (culturing in Petri dishes, on slides, BART, etc.) or more recent (genetic analyses), require either a significant waiting period (44 hours for cultures) or a substantial investment (50-100 euros ex-tax each for genetic analyses). In addition, they have a clear drawback in that the results are not representative of the total biological burden.
Flow cytometry is a powerful solution. Internal studies have shown that the results obtained using cytometry are comparable to those obtained by second generation ATP-metry. However, the equipment required is impractical for most companies due to its cost and the difficulty of learning how to use it.
These techniques, which are time-consuming and complicated to implement outside of a sterile laboratory, are not well adapted for use in the field and for continuous surveillance of water quality.
To monitor a complex aquatic facility (industrial processing plants, facilities for water purification, reclamation, treatment or distribution, water towers, reservoirs, etc.), users employ monitoring tools (surveillance tools) that allow continuous, low-cost monitoring of the biological activity of the water at critical control points (CCPs): upstream and downstream of a key step in the process, zones at risk of becoming polluted, efflorescence, biofouling, blockage, corrosion, scaling, etc.
In ERPs (établissements recevant du public, establishments open to the public), a systematic risk analysis (analyse méthodique des risques, AMR) plan based on control points is currently required for managing biological risks (fecal germs, Legionnella sp., Pseudomonas aeruginosa, etc.) in water-based facilities (water cooling towers, sanitary water, drinking water).
For all structures that use complex aquatic circuits, a microbiological network map is recommended in order to improve CCP surveillance. By taking regular samples at these points, you will be able to identify any emerging anomalies and easily identify the origin of the malfunction and the action that should be taken to address it. When a shift in the biological indicators is detected, the manager can decide to implement the following:
• more detailed investigations: identification of sulfur-reducing bacteria, total coliform bacteria, enterococci, Legionella sp., Pseudomonas aeruginosa, Cryptosporidium parvum, Dinophyceae, Cyanophyceae, etc.);
• corrective or preventive maintenance measures: interruption of a process, instituting a disinfection or purge cycle, targeted treatment of a biofim, etc.
Having an early warning system will enable you to prevent the anomaly from developing further before it becomes a serious technical or health problem. With ATP 2G, you can take control of your network!
• quality and food safety management (ISO 9001, ISO 14001, OHSAS 18001, HACCP) for all collection facilitates (monitoring source quality) and cleaning and disinfection of locations or equipment (CIP - cleaning in place);
• environmental management (ISO 22000);
• management of activities related to drinking water and sanitation (ISO 24510, 24511, 24512).