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Flooding, a phenomenon that is becoming increasingly familiar, can exacerbate surface runoff on an exponential scale. 25 , 26 Once disseminated beyond livestock facilities, ARB can impact the natural ecosystem of surface water streams, promoting their

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in Journal of the American Veterinary Medical Association

Abstract

Objective—To determine the impact of feedyards on endotoxin concentration, fecal coliform count, and other water quality measurements during winter and summer in feedyard playas (shallow lakes).

Sample Population—Water samples obtained from 7 feedyard playas and 3 nonfeedyard control playas.

Procedure—Surface water samples were collected from each playa and at various depths from 3 feedyard playas. Endotoxin concentrations, 22 water quality variables, and fecal coliform counts were determined in samples collected in summer and winter from various combinations of playas.

Results—Cattle numbers per feedyard ranged from 40,000 to 175,000 head/y. Mean endotoxin concentrations were significantly lower in control playas than in feedyard playas in winter and summer. Endotoxin concentration appeared to be homogenous at various water depths. Values for 20 of 22 water quality variables were higher in the feedyard playas than in control playas in winter and summer. In winter only, mean total fecal coliform concentration in feedyard playas was significantly greater than in control playas.

Conclusions and Clinical Relevance—Results indicated that feedyards have the potential to impact water quality in playas, and cattle should not be allowed access to them. Feedyard playa water should not be used under high pressure to settle dust in pens with cattle or to cool cattle, because aerosols containing pathogens and high concentrations of endotoxin are a health hazard for humans and cattle. (Am J Vet Res 2001;62:1402–1407)

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in American Journal of Veterinary Research

-term consumption (30 years or more) of chlorinated surface water or increased TTHMs concentrations and bladder cancer risk. These studies used estimated exposure to TTHMs or to specific THMs (chloroform, bromoform, chlorodibromomethane, or bromodichloromethane) as

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in Journal of the American Veterinary Medical Association

the result of reactions between chlorine and natural organic matter, and epidemiologic studies have revealed an association between long-term (≥ 30 years) consumption of chlorinated surface water and bladder cancer risk in humans. In a case

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in Journal of the American Veterinary Medical Association

from dairy cattle 1074 Outbreaks of campylobacteriosis in humans have been linked to dairy farm visits, contact with contaminated surface water, and consumption of raw milk. There is intense scrutiny of the use of antimicrobials in food animals and

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in Journal of the American Veterinary Medical Association

levels compared with those of cattle living outside the area. The US Geological Survey has found PFAS in surface water and groundwater in numerous sites across the US. 15 One site is the former Wurtsmith Air Force Base on the eastern shores of Michigan

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in Journal of the American Veterinary Medical Association

Malaysia II. Distribution of Pseudomonas pseudomallei in soil and surface water . Am J Trop Med Hyg 1969 ; 18 : 698 – 702 . 10.4269/ajtmh.1969.18.698 93. Merianos A , Patel M , Lane J , et al. The 1990–1991 outbreak of melioidosis in the

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in Journal of the American Veterinary Medical Association
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for further research in this area. 26 , 43 Fish are among the most common clade of wildlife species inhabiting surface water ecosystems receiving wastewater effluents. River systems downstream from water treatment facilities have been shown to carry

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in Journal of the American Veterinary Medical Association

WWTP in the maintenance and dissemination of carbapenemase-producing Enterobacterales, we analyzed effluent and upstream and downstream surface water samples from 50 US WWTPs from both large metropolitan cities and small rural towns. 15 Using selective

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in American Journal of Veterinary Research
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. 104 This application can help users design a system to reduce bioavailable phosphorus reaching surface water by intercepting water carrying dissolved phosphorus and filtering that water through reactive media before discharge to ponds or streams

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in Journal of the American Veterinary Medical Association