BACKGROUND

Groundwater is an essential resource for domestic use, agricultural needs, and economic activities, yet it is increasingly threatened by contamination and overextraction. To evaluate groundwater quality and identify associated health risks, the Philippine Groundwater Health Index (PGHI) project conducted a comprehensive assessment of selected sites across various regions in the country.

METHODS

The study analyzed groundwater samples from multiple locations to determine compliance with the Philippine National Standards for Drinking Water. Parameters assessed included organochlorines, heavy metals, microbial indicators, and physical and nonmetal characteristics such as phosphate and ammonia levels. Results were compiled to evaluate overall groundwater safety and identify areas of concern.

RESULTS

No organochlorines were detected in any of the samples, and all heavy metals complied with national drinking water standards. However, significant noncompliance was observed in other parameters. Microbial contamination was widespread, with 79.25% of samples failing to meet microbial standards due to the presence of fecal coliforms and Escherichia coli. Elevated levels of physical and nonmetal parameters were also noted, with 21 of 27 sites exceeding phosphate limits and 8 sites exceeding ammonia levels. These findings indicate substantial health risks associated with fecal contamination and nutrient pollution.

CONCLUSION

The PGHI project underscores the urgent need for enhanced groundwater treatment processes, regular monitoring, and strengthened policy-making to ensure safe drinking water. While the study provides critical insights, limitations such as lack of seasonal data, absence of emerging contaminant analysis, and limited spatial coverage highlight the necessity for continued improvements in groundwater management. Addressing these gaps is essential to protect public health, preserve environmental quality, and ensure the sustainable availability of safe groundwater for future generations.

Human ; Groundwater ; Public Health

Climate change is increasingly affecting public health and safety, disproportionately affecting vulnerable populations and aggravating existing health inequities. Recognizing the urgency of this challenge, the Department of Environmental and Occupational Health (EOH), College of Public Health, University of the Philippines Manila, convened the Seventh EOH Forum on November 21–22, 2024, with the theme Resilient Futures: Enhancing Health and Safety in Communities and Workplaces Amid Climate Challenges. This commentary highlights key points raised during the forum, with a focus on community-and workplace-level initiatives that address climate-related health risks. These efforts include the improvement of heat-health early warning systems, integration of climate resilience in occupational health and safety programs, and hospital-based interventions for environmental footprint reduction. The presentations also emphasized the need for multi-stakeholder collaboration, localized mitigation and adaptation strategies, and climate-informed health promotion activities. The forum highlighted that building resilient communities and workplaces requires not only policy alignment and institutional support but also interventions on the ground that are inclusive and equitable.

Human ; Climate Change ; Vulnerable Populations ; Occupational Health ; Public Health ; Philippines

The Sixth Environmental and Occupational Health Forum, conducted virtually on November 23 to 24, 2023, focused on "Accelerating the Development of Healthy and climate-smart Hospitals in the Southeast Asian Region." This forum, a collaborative effort of the University of the Philippines Manila and Health Care Without Harm Southeast Asia, aimed to explore and exchange strategies, challenges, and innovative practices for integrating environmental sustainability in healthcare settings across Southeast Asia. The event gathered healthcare professionals, policymakers, and environmental experts to discuss the transformation of hospitals into health and climate-smart institutions. Keynote speakers from various countries presented case studies and research findings, emphasizing the need for holistic approaches that include policy development, stakeholder engagement, and continuous education. Significant outcomes highlighted were the identification of effective policies for sustainable hospitals, understanding the impact of healthcare facilities on climate change, and the necessity for political acumen in promoting environmental stewardship in healthcare. The forum concluded with a consensus on the critical need for ongoing collaboration and innovation in environmental and occupational health, underscoring the importance of transforming healthcare facilities into entities that prioritize both patient care and planetary health.
Delivery of Health Care ; Occupational Health

Even after two years, the COVID-19 pandemic still disrupts public activities and services as it exposes vulnerabilities among the population and negatively impacts environmental conditions. The crisis also impeded global progress toward achieving Sustainable Development Goals (SDG). The Fourth Environmental and Occupational Health (EOH) Forum held virtually on November 25 to 26, 2021 provided a venue for learning about local and international COVID-19 responses to help prepare for the next global crisis. Through the systems thinking approach, the discussions prioritized analyses of leadership and governance, financing, human resource, technologies, information management, and service delivery. These analyses focused on community and/or workplace programs and services linked to air quality, waste management, psychosocial wellness, and COVID-19 vaccination. The forum amplified calls for climate actions and public health improvement and emphasized the significance of a collaborative, evidence-based, integrated public health response to a crisis underscoring the apparent interdependence of the SDGs.
Environmental Health ; Occupational Health ; Sustainable Development Goals ; Covid-19 ; air quality

Objectives: Since the effectiveness of the Zero Open Defecation (ZOD) program as a scaling-up approach in lowering the rates of soil-transmitted helminth (STH) infections has not yet been locally explored, this study aimed to (1) describe the association between environmental determinants and STH cumulative prevalence, and (2) to predict the 2020 STH cumulative prevalence. Methods: A generalized linear regression (GLR) model was used to determine the association of 2014–2015 environmental determinants and observed 2015 STH cumulative prevalence, while a geographically weighted regression (GWR) model was used to produce predicted 2020 STH cumulative prevalence. Results: ArcGIS’ GLR tool with R2 of 63% found that statistically significant environmental determinants include distance near to water bodies, forest land use, access to sanitary toilet, level one water source, and ZOD status, while the ArcGIS’ GWR tool found that barangays, Cabangcalan, Matalangtalang, Talabaan, and Talib in Aroroy hypothetically met the national target below 30% for 2020 STH cumulative prevalence. Conclusion This study showed that barangays with a moderately low percentage of area with freshwater bodies, a moderately high percentage of households with sanitary toilet and level one water source, and a 100% status of ZOD have lower rates of STH cumulative prevalence in preschool-aged children in the selected municipalities in Masbate.
Mass Drug Administration ; Hygiene ; Sanitation ; Geographic Information Systems

Background: Vaccination is an effective public health measure. Health workers, who are at risk of acquiring infectious diseases due to their occupation, are important targets of vaccination. However, previous studies have shown varying rates of vaccine uptake among health workers. Objective: This study aimed to determine the knowledge, attitudes, risk perceptions, and intention towards COVID-19 and vaccination of Filipino health workers in the city of Manila, Philippines. Methodology: The study employed a sequential mixed methods design. A self-administered questionnaire was used to collect data on the study variables. Descriptive statistics was used to analyze the level of COVID-related knowledge, attitude, risk perception, and intention to receive the COVID-19 vaccine. Logistic regression was performed to identify the factors that were associated with intention. Results: Majority (89.4%) had a good knowledge of COVID-19 but had little to moderate knowledge of COVID-19 vaccines. Around half reported feeling unsure about the safety and efficacy of the vaccines while the remaining half expressed intent to get the vaccine. Logistic regression analysis showed that the odds of intention to get vaccinated were higher among those with positive perceived self-efficacy, behavioral intention, external cues to action, perceived vaccine efficacy, and good knowledge on COVID-19 infection prevention. Conclusion Health workers play a crucial role in the promotion of public health measures such as vaccination to control the spread of COVID-19. The study confirms the need for strengthening education and communication strategies focusing on the safety and efficacy of COVID-19 vaccines to prevent the spread of false information and promote vaccine uptake among health workers.
COVID-19 ; Knowledge

Background: Ironically, the hospital which is believed to be a healthy and safe place can be dangerous to health. Pollutants such as particulate matter 2.5 microns (PM₂.₅) can be present in hospital indoor air and may adversely affect the health of the hospital occupants. Objective: Possible sources of indoor PM₂.₅ in an urban tertiary care hospital in the Philippines are identified and apportioned in this study. Methods: PM₂.₅ measurements were conducted in two naturally ventilated wards (NVWs), two mechanically ventilated wards (MVWs), and a roof deck near the hospital. Mass concentrations with analytical uncertainties of thirteen elements (Al, Na, S, Si, Cl, K, Ca, V, Fe, Zn, Br, Hg, Pb) from PM₂.₅ measurements were utilized with Positive Matrix Factorization (PMF) receptor model to identify and apportion possible sources of indoor PM₂.₅. Results: In NVWs and MVWs, four types of sources were identified including sodium and chlorine sources, crustal emissions, anthropogenic sulfur sources, and road dust. Cleaning agents used in the hospital were identified as an anthropogenic indoor source of sodium while the other factors mainly came from outdoor sources. Conclusion The contribution of anthropogenic outdoor pollutants such as road dust and sulfur sources to indoor PM₂.₅ are highlighted in the study. The types of both indoor and outdoor sources of indoor PM₂.₅ can be influenced by the type of ventilation.
Respiration, Artificial ; Air Pollution, Indoor

Environmental and occupational health are interconnected disciplines of public health that are concerned in maintaining a symbiotic relationship between the ecosystem and humans. This relationship is under threat by the continuous and alarming increase of the Earth's temperature causing climate change that impacts not just health but also the economy and the safety of the population. The First National Environmental and Occupational Health Forum was organized by the Department of Environmental and Occupational Health, College of Public Health, University of the Philippines Manila to address and discuss the complex issues that the Philippines is currently experiencing when it comes to environmental and occupational health by providing a space where stakeholders from different sectors can actively participate in mapping out challenges and opportunities. The organizer's long-term vision is to catalyze and build a network of collaboration that is geared towards the improvement of health and safety in the workplace that involves mitigating the effects of climate change. The discussions in the forum gave a comprehensive insight into the different challenges we face for being one of the most vulnerable countries to natural disasters: how this affects health, workplace, and environment. These challenges created new opportunities for the country to build resilience and formulate adaptive strategies to decrease the vulnerability of the population especially the workforce who are constantly exposed to different hazards that are exacerbated by changes in the environment.

Climate Change ; One Health ; Agriculture

OBJECTIVE: The study aimed to determine the physico-chemical and microbiological quality of ice blocks sold in selected wet markets located in the city of Manila.

METHODS: Twenty-eight samples were collected from three markets. Microbiological quality was analyzed in terms of the presence or absence of coliforms with E. coli as indicator organism. Physico-chemical quality was determined by measuring turbidity, apparent color, pH, iron, and residual chlorine. Measurements obtained were compared with the 2007 Philippine National Standards for Drinking Water (PNSDW).

RESULTS: Results showed that all samples tested positive for coliforms while 25 out of the 28 samples were positive for E. coli. Mean turbidity was 2.74 ± 3.68 NTU; for both apparent color and iron tests, all samples complied with the PNSDW standard limit set; mean pH was 6.15 ± 0.64; and mean residual chlorine was 0.06 ± 0.02 mg/L. Average values of apparent color and iron comply with the PNSDW standards. Six out of 28 samples had turbidity values exceeding the standards. All samples were found to have residual chlorine levels below the standards.

CONCLUSION: Ice in markets do not comply with key 2007 PNSDW standards and findings warrant strict compliance of ice quality from manufacturers to the point of distribution to protect consumer health.

Escherichia Coli

OBJECTIVES: The study evaluated the quality of indoor air in households surrounding a coal-fired power plant in Pagbilao, Quezon and its impact to the residents in these communities. 
METHODS: The researchers used a quantitative approach and gathered both primary and secondary data from the Province of Quezon, Municipalities of Pagbilao and Padre Burgos and 12 other barangays from January to June 2008. A household survey was conducted to obtain the health and socio-demographic characteristics of the respondents. Likewise, indoor air quality surveys, respiratory health profiling and pulmonary function tests were done. Indoor air quality monitoring measured eight hour levels of particulate matter -10 (PM10) in "near" and "far" barangays and sulfur dioxide (SO2) and nitrogen dioxide (NO2) in two primary impact barangays as indicated in the environmental impact assessment of the power plant.
RESULTS AND CONCLUSION: Results showed that there is no significant difference (p= <0.05) in the eight-hour average of indoor PM10 in  "near" and "far" barangays. The monitoring results for SO2 and NO2 are below the ambient air quality standards. The results of respiratory profiling and pulmonary function testing revealed that the significant risk factors for respiratory symptoms and pulmonary function parameters are generally demographic characteristics such as sex, height and weight. However, cigarette smoking and indoor PM10 levels, which came out as significant risk factors for wheezing and the predicted forced expiratory volume at 1 second (FEV1), respectively, reflect the environmental exposure of children inside their homes.

Human ; Male ; Female ; Aged ; Middle Aged ; Adult ; Young Adult ; Adolescent ; Child ; Air Pollutants ; Coal ; Gases ; Air Pollution, Indoor ; Coal ; Environmental Exposure ; Nitrogen Dioxide ; Risk Factors ; Smoking ; Sulfur Dioxide ; Environmental Illness ; Tobacco Smoke Pollution