Heterogeneous dermatitis complaints after change in drinking water treatment: a case report.
BACKGROUND
The disinfectant monochloramine minimizes the formation of potentially hazardous and regulated byproducts, and many drinking water utilities are shifting to its use.


METHODS
After a drinking water utility serving 2.4 million people switched to monochloramine for residual disinfection, a small number of residents complained of dermatitis reactions. We interviewed 17 people about their symptoms. Skin appearance, symptoms, and exposures were heterogeneous. Five respondents had history of hives or rash that preceded the switch to monochloramine.


CONCLUSIONS
The complaints described were heterogeneous, and many of the respondents had underlying or preexisting conditions that would offer plausible alternative explanations for their symptoms. We did not recommend further study of these complaints.
Weintraub
June M
JM
Occupational and Environmental Health Section, San Francisco Department of Public Health, 1390 Market Street, San Francisco, CA 94102, USA. june.weintraub@sfdph.org
Berger
Magdalena
M
Bhatia
Rajiv
R
D000368:Aged; D000369:Aged, 80 and over; D002140:California; D002700:Chloramines / Q000009:adverse effects*; D003872:Dermatitis / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D018508:Water Purification
D002700:Chloramines; C030816:chloramine