Current CHEEC research and data management projects:
Exposure Assessment Method for Disinfection Byproducts in Drinking Water in the National Birth Defects Prevention Study
Collaborating Institutions: CHEEC, NBDPS centers, U.S. EPA, University of North Carolina
Project Period: 2008–2016
The water exposure assessment subcommittee of the National Birth Defects Prevention Study (NBDPS) developed a detailed protocol and approach to assign disinfection byproducts (DBP) exposures in drinking water systems to residences in ten states. This project will enable the NBDPS, in conjunction with data on individual drinking water usage, to evaluate relationships between DBPs (trihalomethanes and haloacetic acids) in drinking water and select birth defects. The exposure assessment protocol includes linking the geocoded maternal address to the appropriate drinking water utility, obtaining all relevant DBP water quality data from that utility for that subject, and modeling water quality data to account for spatial and temporal variability. Centralized geocoding of the residences of NBDPS participant was conducted by ATSDR’s Geospatial Research, Analysis, and Services Program Office. CHEEC is linking geocoded residential addresses to water utilities, collecting DBP data for those utilities, and linking the DBP data to the residences where the mother resided 1 month prior to conception through the first trimester of pregnancy. The University of North Carolina, in cooperation with US EPA, is developing algorithms for models to account for spatial and temporal variability of DBPs.
Water Quality Data for Private Wells for the Agricultural Health Study Cohort
Collaborating Institutions: CHEEC, State Hygienic Laboratory
Project Period: 2010–2016
This project will provide nitrate, pesticide and other water quality data for private wells and public water utilities across Iowa to use in modeling drinking water exposures for members of the Agricultural Health Study cohort.
Iowa Women's Health Study Drinking Water Exposures and Cancer Risk
Collaborators: National Cancer Institute, Univ. of Minnesota School of Public Health, CHEEC Project Period: 2012-2017
This project involves analyzing drinking water contaminant data (nitrate, pesticides, disinfection byproducts) in Iowa municipal water supplies in communities where over 21,000 participants in the Iowa Women's Health Study resided during the 1960s through the 1980s. Drinking water exposure data is included with lifestyle, dietary and other data to evaluate risks for thyroid, bladder and ovarian cancer.