Poor drinking water quality in developing countries contributes to waterborne diseases, and this special issue aims to improve understanding and take action to improve water quality.

Drinking Water Quality and Public Health

This scoping review protocol identifies and maps worldwide surveillance actions and initiatives for drinking water quality, highlighting main findings, impacts, challenges, limitations, and research gaps related to global drinking water quality monitoring.

Surveillance of Drinking Water Quality Worldwide: Scoping Review Protocol

Supervised machine learning algorithms, such as gradient boosting and multi-layer perceptron, can efficiently predict water quality index and classify it using four input parameters, potentially benefiting real-time monitoring systems.

Efficient Water Quality Prediction Using Supervised Machine Learning

The SDGs have urged countries to improve drinking water quality and address faecal contamination, with household surveys being a major source of data.

Drinking water quality and the SDGs

Water Quality Index (WQI) calculation methods have evolved over time, but fuzzy logic has significantly improved the adaptability of WQI to specific water uses and challenges.

Water Quality Indices: Challenges and Application Limits in the Literature

The Juja water distribution network, Kenya, has generally good water quality, but deteriorates in the distribution network and is corrosive throughout, requiring improved treatment and management strategies for better service.

Evaluation of water quality and potential scaling of corrosion in the water supply using water quality and stability indices: A case study of Juja water distribution network, Kenya

Using non-original parameters in the National Sanitation Foundation Water Quality Index can alter water quality results, with some scenarios showing more favorable results than others.

A critical review on the application of the National Sanitation Foundation Water Quality Index.

The water quality index (WQI) is a useful tool for evaluating water quality in Dalmatia, with low sulphate and chloride concentrations indicating high sanitary quality.

Water quality evaluation by index in Dalmatia

The RWQIF, a fuzzy logic-based approach to the RWQI, can help prioritize watershed protection actions and reduce water treatment costs while improving treated water quality.

Evaluating the surface Water quality index fuzzy and its influence on water treatment

Coal mining in South Africa is associated with adverse effects on raw water quality, posing health risks to consumers if contamination sources are not reduced or water purification systems are not improved.

Water quality in a mining and water-stressed region

Groundwater in Nadia district, West Bengal, is generally alkaline and arsenic contaminated, with potential cancer risks from As and U, but no health risks from fluoride.

Quality and health risk evaluation for groundwater in Nadia district, West Bengal: An approach on its suitability for drinking and domestic purpose

Including data on water source quality in MDG assessments can lead to lower estimates of access to safe drinking-water and overestimate progress towards the 2015 target.

Accounting for water quality in monitoring access to safe drinking-water as part of the Millennium Development Goals: lessons from five countries.

Water quality indicators need to be simplified, integrated, and appropriate for specific issues, as water quality is increasingly diverse and complex, with global trends in concern.

Looking for water quality

Molecularly imprinted polymers and microwave spectroscopy show promise for real-time water quality monitoring, with potential for increased sensitivity and selectivity in detecting pollutants.

Real-Time Water Quality Monitoring with Chemical Sensors

A globally accepted Water Quality Index (WQI) is needed to effectively assess water quality and communicate its information to public and legislative decision makers.

Water Quality Assessment in Terms of Water Quality Index

Groundwater in Dire-Dawa, Ethiopia, has high levels of fluoride, nitrate, and turbidity, making it unsuitable for domestic use.

Groundwater Quality

Water quality affects human health through pathogens, chemical pollutants, and inadequate treatment, and controlling pollution at source is crucial for health protection and protection of the environment.

Water Quality and Health

Stagnation time and temperature changes significantly impact both chemical and microbial quality in domestic drinking water systems, with microbial parameters driven by fresh water temperature.

An experimental study on the influence of water stagnation and temperature change on water quality in a full-scale domestic drinking water system.

Water quality criteria for reuse systems should consider fine solids, refractory organics, surface-active compounds, metals, and nitrate, with production-scale trials and separate criteria for biofilter operation needed.

Water quality requirements for reuse systems

Sustainable management of water resources requires considering temperature, salinity, nutrient levels, and pollutants, as well as water quantity, for effective water scarcity management.

Quality matters for water scarcity

These studies suggest that improving water quality involves addressing contamination, utilizing advanced monitoring and prediction methods, and implementing better management and treatment strategies.