WHO Guidelines on Water Treatment
Technologies & Safety Standards
The World Health Organization's Guidelines for Drinking-Water Quality, Fourth Edition, establishes the authoritative international framework for water safety management — including recognition of emerging treatment technologies that modify water properties, provided they meet performance-based safety criteria.
A Risk-Based Approach to
Safe Drinking Water
The WHO Guidelines represent the authoritative global standard for drinking water safety, serving as the foundation for national regulatory frameworks worldwide. The guidelines emphasise a risk-based approach to water safety management through comprehensive assessment from source to consumer.
WHO establishes health-based targets as the cornerstone of water safety management — reference points for acceptable risk levels that allow flexibility in technological approaches to achieve safety objectives.
"Safe drinking-water does not represent any significant risk to health over a lifetime of consumption, including different sensitivities that may occur between life stages."
WHO Guidelines for Drinking-Water Quality, Fourth EditionWHO Water Safety Plans —
Three Pillars of Assurance
WHO promotes Water Safety Plans as comprehensive risk assessment and management approaches, encompassing systematic evaluation from source to consumer with continuous operational monitoring.
System Assessment & Design
Evaluation of water sources, treatment processes, and distribution systems to identify potential hazards and establish appropriate control measures throughout the supply chain.
Operational Monitoring
Continuous surveillance of critical control points throughout the water supply system to ensure safety parameters are maintained consistently during normal and atypical conditions.
Management & Communication
Established protocols for responding to deviations from safety parameters and communicating transparently with regulatory stakeholders and end consumers.
Technologies Recognised
by WHO Guidelines
Rather than prescribing specific technologies, WHO emphasises performance outcomes. The guidelines acknowledge a broad spectrum of water treatment technologies as acceptable methods for ensuring water safety.
Physical Treatments
Filtration, sedimentation, and other mechanical processes that remove contaminants without chemical addition — recognised as baseline safe treatment methods under WHO guidelines.
Chemical Treatments
Disinfection processes using chlorine, ozone, UV radiation, and other approved disinfectants — each evaluated through WHO's performance-based framework.
Advanced Technologies
Recognition of emerging treatment methods that demonstrate safety and efficacy through scientific validation — explicitly accommodating innovation that meets WHO performance criteria.
Performance-Based Approach
Treatment methods must demonstrate effective pathogen removal (minimum 4-log reduction for viruses, 3-log for bacteria, 2-log for protozoa), chemical safety compliance, and long-term safety through comprehensive monitoring.
Quantitative Risk Assessment
Methodology
WHO promotes quantitative microbial risk assessment (QMRA) and chemical risk assessment methodologies. These approaches evaluate treatment technologies based on four integrated components.
- Hazard Identification — Systematic identification of biological, chemical, and physical hazards that the treatment must address across all operational conditions.
- Exposure Assessment — Evaluation of potential exposure pathways and concentrations following treatment, including variations in consumption patterns across population groups.
- Dose-Response Assessment — Analysis of health effects at various exposure levels to establish safe thresholds and margin-of-safety requirements.
- Risk Characterisation — Integration of hazard, exposure, and dose-response data to characterise overall risk and determine acceptability for human consumption.
New Technology Validation
Pathways
New treatment technologies must undergo rigorous validation before recognition under WHO guidelines. The framework provides a structured pathway that accommodates technological innovation while maintaining uncompromising safety requirements.
- Laboratory Validation — Controlled studies demonstrating treatment efficacy under standardised conditions, confirming consistent performance and absence of harmful byproducts.
- Pilot-Scale Studies — Confirmation of performance under operational conditions at scale, verifying real-world applicability of laboratory findings.
- Full-Scale Implementation — Comprehensive monitoring during operational deployment, including continuous quality verification and deviation response protocols.
- Long-Term Safety Assessment — Epidemiological studies confirming absence of cumulative adverse effects from extended consumption of treated water.
Technology Assessment Criteria
- Peer-reviewed scientific research demonstrating safety and efficacy published in recognised journals
- Performance data from real-world operational conditions across varying environmental parameters
- Comprehensive toxicological assessment of all treatment processes and potential byproducts
- Quality assurance protocols for ongoing monitoring and verification throughout operational life
International Harmonisation
and Adaptive Frameworks
WHO Guidelines facilitate international harmonisation while explicitly respecting national sovereignty. The guidelines acknowledge that "the nature and form of drinking-water standards may vary among countries and regions" — providing a flexible framework that adapts to local conditions and available resources.
Implementation requires coordination among public health authorities establishing health-based targets, water suppliers implementing treatment and monitoring systems, regulatory bodies enforcing standards, and international organisations providing technical guidance and support.
The guidelines recognise the continuous evolution of water treatment technologies, providing a framework for systematic evaluation of innovative treatment approaches and incorporation of new scientific evidence — ensuring standards remain current with technological advances while maintaining uncompromising safety requirements for drinking water applications.
"Continuous effort should be made to maintain drinking-water quality at the highest possible level while providing flexibility for countries to develop appropriate regulatory frameworks based on local conditions and available resources."
WHO Guidelines for Drinking-Water Quality, Fourth EditionExplore the complete scientific paper.
Dive deeper into the full research, methodology, and referenced data behind this study.
Be part of a global community transforming wellness through frequency-enhanced water.
Still curious? We are here to help.
What is energized water?
Energized water is water that has been infused with specific frequencies that align with the body's natural vibrations, enhancing hydration and wellbeing. Nyra describes this as creating hexagonal clusters that improve cellular absorption.
How does Nyra energize water?
The Nyra app uses frequency patterns and sound vibrations delivered through a mobile device to charge water at a molecular level, using proprietary algorithms to restructure water for improved bioavailability.
Is this method safe?
Nyra positions the method as non-invasive, eco-friendly, and aligned to natural resonance patterns found in healthy biological systems.
What benefits can I expect?
Regular use may help improve cellular hydration, energy levels, emotional balance, immunity, and overall vitality, with users also reporting support for meditation, sleep, and physical performance.
Do I need any special equipment?
No. The experience is designed around just a mobile phone, the Nyra app, and clean drinking water.
How long does the charging process take?
Typical sessions are under 1 minute.