Showing results for: water regulations Articles
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Water trading quality programs: An international overview
Water quality trading is gaining traction in a number of watersheds around the world. It is a market-based approach that works alongside water quality regulation to improve water quality, providing flexibility in how regulations are met and potentially lowering regulatory compliance and abatement costs. Our research identified 57 water quality trading programs worldwide. Of these, 26 are active, ...
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Evaluation of multiple-locus variable-number tandem repeat analysis (MLVA) for genotyping of Escherichia coli isolated from Karaj River
Most microbiological water quality regulations rely upon the detection of indicators of fecal pollution, such as coliform bacteria, or more specifically Escherichia coli. In order to further understand the source, fate, and implications for water quality regulation, environmental E. coli isolates should be assessed genetically to observe various levels of genotypic diversity. Multiple-locus ...
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Influence of the land use pattern on the concentrations and fluxes of priority pollutants in urban stormwater
This paper presents the results of the concentrations (μg/L) and fluxes (g/ha) of priority substances in stormwater from three watersheds with different land use patterns (namely, residential, urban dense, high urban density). Samples were collected at the outlet of these watersheds. Thirteen chemical groups were investigated corresponding to 88 individual substances before treatment. Results ...
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Evolution of regulatory targets for drinking water quality
The last century has been marked by major advances in the understanding of microbial disease risks from water supplies and significant changes in expectations of drinking water safety. The focus of drinking water quality regulation has moved progressively from simple prevention of detectable waterborne outbreaks towards adoption of health-based targets that aim to reduce infection and disease ...
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Freshwater Resources: Managing the Risks Facing the Private Sector
In recent years, a broad set of national and international water issues has begun to receive significant attention at all levels of society, from leaders at the United Nations to local communities in the United States and around the world. In part, this is due to a growing understanding of the complex interconnections between water and almost every other major issue of the day, including ...
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Maximizing the accuracy of field‐derived numeric nutrient criteria in water quality regulations
High levels of the nutrients nitrogen and phosphorus can cause unhealthy biological or ecological conditions in surface waters, and prevent the attainment of their designated uses. Regulatory agencies are developing numeric criteria for these nutrients in an effort to ensure that the surface waters in their jurisdictions remain healthy and productive, and that water quality standards are met. ...
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EPA Clean Water Act: New Regulations re: `Waters of the United States`
The Environmental Protection Agency (EPA) published a final rule defining the scope of waters protected under the Clean Water Act… The rule will ensure protection for the nation’s public health and aquatic resources, and increase CWA program predictability and consistency by clarifying the scope of ‘‘waters of the United States’’ protected under the ...
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Eelgrass as a Bioindicator Under the European Water Framework Directive
Eelgrass is the most widespread plant in temperate coastal waters. It is regarded as a useful indicator of water quality because water clarity regulates its extension towards deeper waters, i.e. the depth limit. This study analyses the use of eelgrass depth limits as a bioindicator under the Water Framework Directive (WFD). The WFD demands that ecological status is classified by relating the ...
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The common ecotoxicology laboratory strain of Hyalella azteca is genetically distinct from most wild strains sampled in eastern North America
The amphipod Hyalella azteca is commonly used as a model for determining safe concentrations of contaminants in freshwaters. We sequenced the mitochondrial cytochrome c oxidase subunit I (COI) gene for representatives of 38 populations of this species complex from US and Canadian toxicology research laboratories and eastern North American field sites to determine their genetic relationships. ...
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Water compliance challenges: how do Canadian small water systems respond?
Fundamental to community health and well-being is the capacity to access a sustainable supply of safe drinking water. Small community drinking water systems are the most vulnerable to contamination, and struggle to secure the funds necessary to improve water treatment and delivery systems, and meet increasingly stringent drinking water quality regulations. Little is known of the contextual and ...
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Corporate Reporting on Water - A Review of Eleven Global Industries
Water is a crucial resource for nearly all industry activities. Yet decreasing water availability, declining water quality, and growing water demands from nonindustrial water users are creating new challenges to businesses that have traditionally taken clean and reliable water for granted. Around the world, corporations are now facing diverse water risks, including changing allotments, more ...
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Modeling and evaluation of compliance to water quality regulations in bathing areas on the Daoulas catchment and estuary (France)
The microbiological quality of waters in estuaries determines their acceptability for recreational uses. Microbiological contamination often results from urban wastewater discharges or non-point source pollution (manure spreading), and can cause bathing zones to be closed. European regulations (EC/7/2006) have proposed standards (500 E. coli/100 ml) for the acceptability areas for bathing. In ...
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Employing flexible data management solutions that deliver improved productivity and quality in the water and environmental industry
This article will discuss the industry trends and challenges environmental monitoring organizations face today and will demonstrate how the use of a Laboratory Information Management System (LIMS) allows managers to make informed decisions to improve throughput, resolve environmental issues and risks faster, all while enabling organizations to comply with strict regulatory guidelines. An ...
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Assessing clarity of message communication for mandated USEPA drinking water quality reports
The United States Environmental Protection Agency mandates that community water systems (CWSs), or drinking water utilities, provide annual consumer confidence reports (CCRs) reporting on water quality, compliance with regulations, source water, and consumer education. While certain report formats are prescribed, there are no criteria ensuring that consumers understand messages in these ...
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Perceptions of bottled water consumers in three Brazilian municipalities
This study presents perceptions of consumers of bottled water in their households in three Brazilian municipalities. Data from interviews were analyzed using the Discourse Collective Subject method. Interviewees spent, on average, the equivalent of 40% of their water bill for the public water supply on the purchase of bottled water. The decision about water consumption in the household ...
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Pyrethroid and organophosphate pesticide‐associated toxicity in two coastal watersheds (California, USA)
Portions of the Santa Maria River and Oso Flaco Creek watersheds in central California, USA, are listed as impaired, under section 303(d) of the Clean Water Act, and require development of total maximum daily load (TMDL) allocations. These listings are for general pesticide contamination, but are largely based on historic monitoring of sediment and fish tissue samples that showed contamination by ...
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Water scarcity & climate change: Growing risks for businesses & investors
Water is crucial for the economy. Virtually every industry from agriculture, electric power and industrial manufacturing to beverage, apparel, and tourism relies on it to grow and ultimately sustain their business. Yet water is becoming scarcer globally and every indication is that it will become even more so in the future. Decreasing availability, declining quality, and growing demand for water ...
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Disinfection of an advanced primary effluent using peracetic acid or ultraviolet radiation for its reuse in public services
The disinfection of a continuous flow of an effluent from an advanced primary treatment (coagulation-flocculation-sedimentation) with or without posterior filtration, using either peracetic acid (PAA) or ultraviolet (UV) radiation was studied. We aimed to obtain bacteriological quality to comply with the microbiological standard established in the Mexican regulations for treated wastewater ...
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Pseudomonas aeruginosa in bottled drinking water in Sri Lanka: a potential health hazardPseudomonas aeruginosa, a food- and water-borne opportunistic pathogen, constitutes a health risk mostly to immunocompromised patients, and also affects the taste, odour and turbidity of potable water. In order to detect P. aeruginosa in bottled water in Sri Lanka, 36 bottled water brands were collected randomly from retail and supermarkets island wide. P. aeruginosa was detected by the ...
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Loch Ascog Water Treatment Works (WTW) - Case Study
Background Loch Ascog WTW, on the Isle of Bute in Western Scotland, treats water abstracted water from the loch. The main treatment at the works was slow sand filtration followed by disinfection. The quality of the treated water was not compliant with the National Requirements of The Water Supply (Water Quality) Regulations 2000 in relation to: Iron and manganese Turbidity and taste ...
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