52 percent of Jakarta’s 7,895 schools are located within 5 kilometers of documented contaminated sites, according to a June study by the Center for Global Development (CGD). The research suggests hundreds of thousands of students may be at risk of exposure to hazardous pollutants, including lead, mercury, and cadmium.
Jakarta Schools Face Higher Pollution Proximity Than National Average
The CGD study analyzed school locations across 17 low- and middle-income countries, including Brazil, Ghana, India, Mexico, and Vietnam. While roughly 8 percent of schools across Indonesia—approximately 31,600 schools affecting 6.5 million students—sit within 5 km of polluted areas, Jakarta’s rate is significantly higher.
In the capital, nearly 370 schools are located within just 1 km of contaminated sites. These sites include waste-processing facilities, industrial areas, mining and smelting operations, and battery recycling plants.
Did You Know? In Indonesia, schools in the wealthiest neighborhood quintile are 49 times more likely to be near documented contaminated sites than those in the poorest areas, as affluent communities and industrial activity often overlap in urban areas.
Lead Exposure and Cognitive Risks for Students
Lee Crawfurd, a senior research fellow at the CGD and lead author of the study, identified lead as the most common pollutant near Jakarta schools. Crawfurd stated that lead has no safe exposure level for children and can permanently reduce learning outcomes and IQ.
The stakes for child development are high. A 2025 study by Berkhout et al. found that children living within 3 km of a toxic site who were exposed to lead before age seven scored 0.48 standard deviations lower in numeracy, a gap equivalent to roughly three years of schooling.
Expert Insight: The data reveals a paradox where wealth does not insulate students from environmental hazards. Because industrial zones and high-income residential areas often coexist in dense urban hubs like Jakarta, the risk is not limited to marginalized communities.
Global Health Impacts and Economic Costs
The localized risks in Jakarta mirror a broader global crisis. According to a 2023 study in The Lancet Planetary Health, lead exposure is linked to 5.5 million adult cardiovascular deaths annually and the loss of 765 million IQ points in children under five worldwide.
The Lancet study estimated that 90% to 95% of these impacts occur in developing countries. The resulting global economic cost is estimated at US$6 trillion.
Government Response and Potential Next Steps
Yogi Ikhwan, spokesperson for the Jakarta Environment Agency, described the findings as a “serious concern” and an “initial reference” for the city’s public health protections. Ikhwan noted that agency data currently shows no lead smelting or used lead-acid battery recycling facilities operating within Jakarta.
Despite this, the agency may conduct further investigations with ministries and researchers to verify field conditions. Possible responses include technical assessments and coordination with authorities if contamination evidence is found.
Budi Susilorini, Indonesia country director at Pure Earth, urged the government to treat lead exposure as a major public health priority to protect the “Golden Indonesia 2045” vision. She recommended a comprehensive approach including:
- Nationwide blood lead level surveillance and environmental monitoring.
- Stronger enforcement of environmental regulations and lead concentration standards.
- Public education on lead sources and the elimination of exposure at the source.
Crawfurd suggested that Indonesia could also implement soil testing, blood-lead screenings at high-risk schools, and a national inventory of polluted sites to screen locations before new schools are constructed.
Frequently Asked Questions
What types of contaminated sites are near Jakarta schools?
According to the CGD study, these include industrial areas, battery recycling facilities, waste-processing sites, and mining and smelting operations.
Does proximity to a contaminated site guarantee a student is exposed?
Budi Susilorini of Pure Earth stated that while proximity does not prove exposure, research shows a strong association between lead-contaminated environments and elevated blood lead levels in children.
How does the pollution risk in Jakarta compare to the rest of Indonesia?
Jakarta’s risk is far above the national average; 52 percent of the city’s analyzed schools are within 5 km of contaminated sites, compared to approximately 8 percent of schools nationwide.
How should cities balance industrial growth with the safety of educational zones?
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