| Literature DB >> 26392185 |
David M Oliver1, Nick D Hanley2, Melanie van Niekerk3, David Kay4, A Louise Heathwaite5, Sharyl J M Rabinovici6, Julie L Kinzelman7, Lora E Fleming8, Jonathan Porter9, Sabina Shaikh10, Rob Fish11, Sue Chilton12, Julie Hewitt13, Elaine Connolly14, Andy Cummins15, Klaus Glenk16, Calum McPhail17, Eric McRory18, Alistair McVittie19, Amanna Giles20, Suzanne Roberts21, Katherine Simpson22, Dugald Tinch23, Ted Thairs24, Lisa M Avery25, Andy J A Vinten26, Bill D Watts27, Richard S Quilliam28.
Abstract
The use of molecular tools, principally qPCR, versus traditional culture-based methods for quantifying microbial parameters (e.g., Fecal Indicator Organisms) in bathing waters generates considerable ongoing debate at the science-policy interface. Advances in science have allowed the development and application of molecular biological methods for rapid (~2 h) quantification of microbial pollution in bathing and recreational waters. In contrast, culture-based methods can take between 18 and 96 h for sample processing. Thus, molecular tools offer an opportunity to provide a more meaningful statement of microbial risk to water-users by providing near-real-time information enabling potentially more informed decision-making with regard to water-based activities. However, complementary studies concerning the potential costs and benefits of adopting rapid methods as a regulatory tool are in short supply. We report on findings from an international Working Group that examined the breadth of social impacts, challenges, and research opportunities associated with the application of molecular tools to bathing water regulations.Entities:
Keywords: Bathing Water Directive; Fecal indicator organism; Microbial pollution; Public perception; Recreational water quality; Risk communication
Mesh:
Year: 2015 PMID: 26392185 PMCID: PMC4709354 DOI: 10.1007/s13280-015-0698-9
Source DB: PubMed Journal: Ambio ISSN: 0044-7447 Impact factor: 5.129
Priority research questions
| Direct cost implications | Types of information | How to measure & communicate risk | How to measure success of rapid methods | How to value a day at the beach & the cost of illness | Visitor behavior |
|---|---|---|---|---|---|
| What infrastructure & costs are needed to maximize the benefits of rapid methods? | What quantity & type of information would beach users prefer to receive? How quickly would they like to receive this information & how would they like to access it? | What information should be given to the public to allow more informed & better decisions about bathing water risk? | How would changes to the beach take shape (frequency/activities/indirect & direct economic impacts) should water-quality information be improved? | We need system-wide methods of assessment in order to understand the totality of benefits/trade-offs for valuations | What drives demand for beach use, how heterogeneous is it, & what role does water quality play in it? |
| Uncertainties in the scientific evidence-base hindering economic valuations need to be addressed | Does the preference for certain type of information or the way in which it is accessed vary between different user groups & if so how? | How can uncertainty regarding health risk be better incorporated into valuation scenarios of bathing water quality? | What are the additional (£/$) benefits in terms of enhanced ecosystem services from actions to reduce health risks in bathing waters? | Do we know enough about the vulnerability/WTP of different user groups with regard to health risks? | How do we distinguish the effects of changes in water quality compared to the effects of signs on beach-going habits? |
| How should investment be distributed between microbial risk management (beach monitoring) & prevention (catchment management)? | Would recreational water users react to information on water quality? What information would people respond to? What is the best way to present risk information, i.e., risk of GI infection | Is there a common set of demographic factors that explain variation in responses to risk information? | What are the measures by which we can (& want to) evaluate beach management success? | What are the economic impacts of illness as a result of exposure to polluted waters and how might rapid methods alter the cost of health-care? | Which groups of recreationists would be most affected by 1) advisory signs, 2) water-quality changes? |
| Would predictive modeling have more merit than using other methods requiring infrastructural reorganization? | Can we determine impacts on behavioral response of the same information being presented to recreational water users in different ways? | Does prediction of water quality have more value to beach users than “real” water-quality data? | How do we capture the benefits to new recreational water users who do not currently use a beach due to poor water quality? | Would the use of new methods lead to more beach failures? If so how would this change the value of a day at the beach? What would be the economic costs? What is the impact of posting warning signs at beaches to 1) users & 2) local economies? | What are the regional differences in attitudes & preferences regarding the impact of near-real-time water-quality information? |