Validation of drinking water disinfection by-product exposure assessment for rural areas in the National Children’s Study

The objective of this study was to provide evidence to evaluate the proposed National Children’s Study (NCS) protocol for household water sampling in rural study areas. Day-to-day variability in total trihalomethane (TTHM) concentrations in community water supplies (CWS) in rural areas was determine...

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Bibliographic Details
Published in:Journal of exposure science & environmental epidemiology 2015-05, Vol.25 (3), p.303-307
Main Authors: Binkley, Teresa L, Thiex, Natalie W, Specker, Bonny L
Format: Article
Language:English
Subjects:
692/700/478
704/172/169/895
706/2805
Analysis
By-products
Children
Coefficient of variation
Contamination (Technology)
Correlation
Disinfection
Disinfection and disinfectants
Drinking water
Drinking Water - chemistry
Environmental aspects
Environmental Exposure - analysis
Epidemiology
Evaluation
Health aspects
Households
Humans
Infection control
Management
Medicine
Medicine & Public Health
Monitoring
original-article
Pilot Projects
Polynomials
Purification
Reproducibility of Results
Rural areas
Rural health
Rural Population
Sparsely populated areas
Testing
Trihalomethanes
Trihalomethanes - analysis
United States
Variability
Water
Water analysis
Water Pollutants, Chemical - analysis
Water Quality
Water sampling
Water supply
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Summary:The objective of this study was to provide evidence to evaluate the proposed National Children’s Study (NCS) protocol for household water sampling in rural study areas. Day-to-day variability in total trihalomethane (TTHM) concentrations in community water supplies (CWS) in rural areas was determined, and the correlation between TTHM concentrations from household taps and CWS monitoring reports was evaluated. Daily water samples were collected from 7 households serviced by 7 different CWS for 15 days. Coefficients of variation for TTHM concentration over 15 days ranged from 8% to 20% depending on the household. Correlations were tested between TTHM household concentrations and the closest date- and location-matched CWS monitoring reports for the 15-day mean ( R =0.85, P 50  μ g/l corresponded to measured NCS household concentrations ranging from 2 to 60  μ g/l. TTHM concentrations were higher in CWS than NCS samples (11.2±3.2  μ g/l, mean difference±SE, P
ISSN:1559-0631
1559-064X
DOI:10.1038/jes.2014.51