Relationships of Cancer Incidence Rates in Iowa Municipalities to Chlorination Status of Drinking Water

P Isacson; J A Bean; C Lynch

Book chapter

Relationships of Cancer Incidence Rates in Iowa Municipalities to Chlorination Status of Drinking Water

P Isacson, J A Bean and C Lynch

Water Chlorination: Environmental Impact and Health Effects; Volume 4 Book 2: Environment, Health, and Risk, pp.1353-1364

Ann Arbor Science

01/01/1983

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Abstract

Data on cancer incidence in Iowa towns supplied with surface water or groundwater, chlorinated and unchlorinated, showed relationships between chlorination and incidence rates of bladder cancer among males, lung cancer among females, and rectal cancer among both males and females. Incidence rates of lung and rectal cancers among females were higher for surface than groundwater supplies. In the study area chlorination of surface water yielded primarily chlorinated trihalomethanes (THMs), whereas in chlorinated groundwater brominated THMs were more prevalent. Rates for bladder cancer among males did not differ between surface and groundwater sources. Bladder cancer rates appeared to be more closely associated with brominated THMs. Rates for cancer of the breast, stomach, and colon were not significantly different between surface water and groundwater sources. Male residents of towns supplied with nonchlorinated water had higher rates of rectal cancer than residents using chlorinated water. As the mean level of chloroform increased, the incidence rates for bladder cancer among males and for rectal cancer among males and females increased. As dibromochloromethane levels increased, bladder cancer among males increased more sharply than with chloroform and dichlorobromomethane. (Cassar-PTT)

Epidemiology

Groundwater

Public Health

Water Supply

Water Treatment

Bromine compounds

Cancer

Chlorinated hydrocarbons

Chlorination

Chloroform

Drinking water

Iowa

Organic compounds

Risks

Surface water

Trihalomethanes

Water pollution effects

Details

Title: Subtitle: Relationships of Cancer Incidence Rates in Iowa Municipalities to Chlorination Status of Drinking Water
Creators: P Isacson
J A Bean
C Lynch
Resource Type: Book chapter
Publication Details: Water Chlorination: Environmental Impact and Health Effects; Volume 4 Book 2: Environment, Health, and Risk, pp.1353-1364
Publisher: Ann Arbor Science; Ann Arbor, MI
Language: English
Date published: 01/01/1983
Academic Unit: Epidemiology
Record Identifier: 9984214954502771

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