News - Water Quality Monitoring at a Premium Resort Swimming Pool in Fiji

A luxury resort in Fiji sought to strengthen its swimming pool hygiene management framework to safeguard guest health and safety in alignment with international standards. To this end, the resort deployed the MPG-6099Pro wall-mounted multi-parameter water quality analyzer, manufactured by Shanghai Boqi Instrument Co., Ltd. This analyser supports customizable configurations and accommodates digital sensors tailored to site-specific requirements. It enables simultaneous connection of up to seven sensors and real-time monitoring of eight critical water quality parameters. For this application, pH, oxidation-reduction potential (ORP), and chloride ion sensors were integrated per operational specifications. In addition to these core parameters, the system concurrently measures water temperature—ensuring comprehensive compliance with WHO and World Aquatics (formerly FINA) guidelines for recreational water quality.

Solution Overview
1. Integrated Monitoring System
The MPG-6099Pro features a compact wall-mounted design with a 10-inch high-resolution color touchscreen interface, enabling on-site data visualization, configuration, and operational control without reliance on external devices or frequent manual sampling. This localized human-machine interaction significantly reduces operational latency and enhances staff responsiveness. Pre-calibrated, factory-installed electrodes ensure plug-and-play commissioning, simplified routine maintenance, and minimized downtime—thereby lowering lifecycle maintenance costs. Critically, the use of certified reference electrodes guarantees measurement traceability, long-term stability, and data integrity, supporting evidence-based decision-making and regulatory accountability.

2. Key Parameter Monitoring and Control Rationale
• pH: Maintained within the optimal range of 7.2–7.6 (per WHO and CDC recommendations). This range minimizes ocular and dermal irritation while preventing corrosion of pool infrastructure and degradation of disinfectant efficacy. Precise pH control is foundational to maintaining both bather comfort and chemical treatment efficiency.

• ORP: Continuously monitored as a functional indicator of disinfectant activity. Target ORP values ≥650 mV (at pH ≤7.6) reflect sufficient oxidative capacity to inactivate common waterborne pathogens—including *E. coli*, *Pseudomonas aeruginosa*, and enteric viruses—within recommended contact times. Real-time ORP trending allows dynamic adjustment of disinfectant dosing, optimizing residual efficacy while avoiding over-chlorination.

• Free Chlorine: Sustained at 0.4–0.8 mg/L, consistent with international best practices for commercial pools. This concentration achieves robust microbial inactivation while mitigating sensory discomfort (e.g., chlorinous odour, eye/skin irritation) associated with elevated residuals (>1.0 mg/L). The system’s closed-loop feedback capability ensures stable chlorine levels despite fluctuating bather load and environmental conditions.

• Temperature: Monitored continuously to maintain water temperature within the recommended therapeutic range of 26–28 °C. Stable thermal conditions enhance user comfort, reduce physiological stress, and support consistent disinfectant kinetics. Automated integration with HVAC or heat-pump systems enables responsive thermal regulation, minimizing energy waste and operational variance.

https://www.boquinstruments.com/multi-parameter-online-water-quality-analysis-product/

Intelligent Management Capabilities
Remote Data Transmission and Real-Time Alerting: The system supports the RS485 communication protocol, enabling secure and reliable remote transmission of water quality data to a centralized management platform. This facilitates continuous (24/7) monitoring and dynamic alerting. Hotel facility managers can access real-time pool water quality metrics—including pH, residual chlorine, turbidity, and temperature—via web-based dashboards or dedicated mobile applications. Upon detection of parameter deviations beyond predefined safety thresholds, the system automatically triggers multi-channel alerts (e.g., SMS, email, in-app notifications), prompting immediate corrective action and thereby mitigating health risks associated with substandard water conditions.

Intelligent Sludge and Suspended Solids Management System: An integrated control algorithm dynamically regulates filtration and backwashing cycles based on real-time turbidity measurements, maintaining pool water turbidity at ≤1 NTU—a key indicator of optical clarity and hygienic safety. By automating the operation of filtration units, coagulant dosing systems, and sludge removal mechanisms, the system ensures consistent removal of particulate matter and organic contaminants. This sustained clarity enhances both aesthetic appeal and bather safety, contributing to an elevated guest experience.
Data Logging, Trend Analysis, and Reporting: The MPG-6099Pro analyzer incorporates robust data logging capabilities, archiving high-resolution time-series records of all monitored parameters. The embedded analytics engine generates standardized compliance reports, statistical summaries, and interactive trend visualizations (e.g., rolling 30-day averages, deviation heatmaps). These tools empower facility managers to identify seasonal patterns, assess treatment efficacy, detect early-stage anomalies, and support evidence-based decision-making—thereby strengthening preventive maintenance protocols and advancing overall water quality governance.
Implementation Outcomes:
Since deployment of the MPG-6099Pro wall-mounted multi-parameter water quality analyzer at a luxury resort in Fiji, the property has achieved measurable improvements in aquatic facility management. Integration with the hotel’s building management system (BMS) enables synchronized, real-time monitoring and closed-loop automated control—reducing manual sampling frequency by 75% and cutting related labor costs by approximately 40%. Crucially, continuous adherence to WHO and WHO/IHR-aligned recreational water quality guidelines (e.g., turbidity ≤1 NTU; free chlorine 1–3 mg/L; pH 7.2–7.8) has been validated through third-party audits. The result is a demonstrably safer, more transparent, and consistently compliant swimming environment—directly supporting the resort’s commitment to guest wellbeing, operational excellence, and international certification standards.