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Chicago area methyl parathion response
Kenneth G McCann1, C Michael Moomey, Kenny D Runkle
1Illinois Department of Public Health, Division of Environmental Health, Environmental Toxicology Section, Springfield, Illinois, USA. kmccann@idph.state.il.us
Abstract:
The Illinois Department of Public Health participated in the Chicago, Illinois, area methyl parathion (MP) response with several other federal, state, and local government agencies beginning in April 1997. This response was initiated on evidence that hundreds of homes in the Chicago area were illegally treated for cockroaches with MP over a period of several years. Through applicator receipt books and information reported by property owners and tenants, 968 homes were identified as having been treated with MP. Upon implementation of a response plan developed by the Methyl Parathion Health Sciences Steering Committee, environmental sampling and urine monitoring were provided for eligible households. Environmental sampling was conducted in 903 homes, with MP detected above levels of concern in 596 residences. Residents of these homes were offered urine sampling to determine the extent of exposure to MP. Urine samples were collected and analyzed for p-nitrophenol in 1,913 individuals. Implementation of the protocol resulted in 550 residents being relocated during the remediation of 100 households.
Insights
Methyl parathion (MP) illegally treated hundreds of Chicago homes. Public health response involved environmental and urine sampling, leading to 550 residents relocating during remediation.
Area of Science:
- Environmental health
- Toxicology
- Public health surveillance
Background:
- Illegal application of methyl parathion (MP) for cockroach treatment affected numerous homes in the Chicago area over several years.
- A multi-agency response was initiated in April 1997 to address the public health risks associated with MP contamination.
Purpose of the Study:
- To investigate the extent of methyl parathion contamination in residential properties.
- To assess human exposure to methyl parathion through urine monitoring.
- To implement remediation strategies and ensure resident safety.
Main Methods:
- Identification of 968 homes treated with MP using applicator records and resident reports.
- Environmental sampling in 903 homes to detect MP levels.
- Urine sampling for p-nitrophenol (a metabolite of MP) in 1,913 individuals to quantify exposure.
Main Results:
- Methyl parathion was detected above concern levels in 596 out of 903 sampled homes.
- Urine samples indicated exposure in residents from contaminated households.
- Remediation efforts led to the relocation of 550 residents from 100 households.
Conclusions:
- The methyl parathion response effectively identified contaminated homes and assessed resident exposure.
- Public health interventions, including environmental monitoring and relocation, were crucial for mitigating risks.
- This case highlights the importance of regulatory oversight in pesticide application and prompt response to environmental health threats.
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