scholarly journals New Recreational Water Quality Criteria and Their Impact on Beach Advisories in Coastal Georgia

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Asli Aslan ◽  
Sara Benevente
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Recreational Water ◽  
Recreational Water Quality

scholarly journals Modeling the Effects of Future Hydroclimatic Conditions on Microbial Water Quality and Management Practices in Two Agricultural Watersheds

2020 ◽  
Vol 63 (3) ◽  
pp. 753-770 ◽  
Author(s):  
Rory Coffey ◽  
Jonathan Butcher ◽  
Brian Benham ◽  
Thomas Johnson
Keyword(s):  
Water Quality ◽  
Fecal Coliform ◽  
Management Practices ◽  
Quality Criteria ◽  
Agricultural Watersheds ◽  
Water Quality Criteria ◽  
Recreational Water ◽  
Microbial Water Quality ◽  
Recreational Water Quality ◽  
Nonpoint Sources

Highlights Increased fecal coliform (FC) loading from nonpoint sources is associated with wetter-warmer futures. Drier-warmer futures reduced FC loads but caused more recreational water quality criteria exceedances. More extensive BMP implementation may be needed to meet water quality goals. Abstract. Anticipated future hydroclimatic changes are expected to alter the transport and survival of fecally sourced waterborne pathogens, presenting an increased risk of recreational water quality impairments. Managing future risk requires an understanding of the interactions between fecal sources, hydroclimatic conditions, and best management practices (BMPs) at spatial scales relevant to decision makers. In this study, we used the Hydrologic Simulation Program FORTRAN (HSPF) to quantify potential fecal coliform (FC, an indicator of the potential presence of pathogens) responses to a range of mid-century climate scenarios and assess different BMP scenarios (based on reduction factors) for reducing the risk of water quality impairment in two small agricultural watersheds: the Chippewa watershed in Minnesota, and the Tye watershed in Virginia. In each watershed, simulations show a wide range of FC responses, driven largely by variability in projected future precipitation. Wetter future conditions, which drive more transport from nonpoint sources (e.g., manure application, livestock grazing), show increases in FC loads. Loads typically decrease in drier futures; however, higher mean FC concentrations and more recreational water quality criteria exceedances occur, likely caused by reduced flow during low-flow periods. Median changes across the ensemble generally show increases in FC load. BMPs that focus on key fecal sources (e.g., runoff from pasture, livestock defecation in streams) within a watershed can mitigate the effects of hydroclimatic change on FC loads. However, more extensive BMP implementation or improved BMP efficiency (i.e., higher FC reductions) may be needed to fully offset increases in FC load and meet water quality goals, such as total maximum daily loads and recreational water quality standards. Strategies for managing climate risk should be flexible and to the extent possible include resilient BMPs that function as designed under a range of future conditions. Keywords: Climate, HSPF, Management responses, Microbial water quality, Modeling, Watersheds.

scholarly journals A sea change ahead for recreational water quality criteria

2008 ◽  
Vol 7 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Alexandria B. Boehm ◽  
Nicholas J. Ashbolt ◽  
John M. Colford ◽  
Lee E. Dunbar ◽  
Lora E. Fleming ◽  
...  
Keyword(s):  
Water Quality ◽  
Environmental Protection Agency ◽  
Quality Criteria ◽  
The United States ◽  
Water Quality Criteria ◽  
Recreational Water ◽  
Research Needs ◽  
Recreational Water Quality ◽  
Epidemiology Studies ◽  
New Criteria

The United States Environmental Protection Agency is committed to developing new recreational water quality criteria for coastal waters by 2012 to provide increased protection to swimmers. We review the uncertainties and shortcomings of the current recreational water quality criteria, describe critical research needs for the development of new criteria, as well as recommend a path forward for new criteria development. We believe that among the most needed research needs are the completion of epidemiology studies in tropical waters and in waters adversely impacted by urban runoff and animal feces, as well as studies aimed to validate the use of models for indicator and pathogen concentration and health risk predictions.

scholarly journals U.S. Recreational Water Quality Criteria: A Vision for the Future

2015 ◽  
Vol 12 (7) ◽  
pp. 7752-7776 ◽  
Author(s):  
Roger Fujioka ◽  
Helena Solo-Gabriele ◽  
Muruleedhara Byappanahalli ◽  
Marek Kirs
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Recreational Water ◽  
Recreational Water Quality ◽  
The Future

Swimming-Associated Illness and Recreational Water Quality Criteria

1989 ◽  
Vol 21 (2) ◽  
pp. 13-21 ◽  
Author(s):  
V. J. Cabelli
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Epidemiological Data ◽  
Water Quality Criteria ◽  
Recreational Water ◽  
Marine Waters ◽  
Single Measure ◽  
Recreational Water Quality ◽  
Quality Guidelines ◽  
Run Off

There is a measurable risk of acute gastroenteritis associated with swimming in marine waters contaminated with human fecal wastes to levels that would be aesthetically acceptable. The enterococcus level in the bathing water is the best single measure of its quality relative to the risk of swimming-associated, pollution-related infectious disease. Three mathematically expressable indicator-illness relationships (criteria) are available from which recreational water quality guidelines can be extrapolated from the criteria once a decision has been made as to the acceptable risk of illness. The recently revised USEPA recreational water quality criteria and guidelines reflect this regulatory approach. A model is presented for the regulation of water quality which defines decision-making and actions by federal and local agencies as well as resource users. This model requires the ability to predict illness rates from monitoring data. Three equations, each corresponding to one of the criteria, are available for doing so. Concept and supporting epidemiological data indicate that the criteria do not apply to situations in which the sources of contamination are the fecal wastes from small numbers of individuals (e.g. boat wastes, the bathers themselves) or from lower animals (e.g. stormwater run-off). Differential die-off of viral pathogens and the bacterial indicator during wastewater chlorination and protracted residence in marine waters may also confound the use of the criteria in specific situations.

Volume Analysis for Attainability of Water Quality Criteria for Three Loading Constituents

2004 ◽  
Author(s):  
Ping Wang ◽  
Lewis Linker ◽  
James Collier ◽  
Gary Shenk ◽  
Robert Koroncai ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Volume Analysis
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