smartphone-based water quality test Articles

  • Water quality testing: solutions from catchment to waste

    Globally, over 80% of the wastewater generated by society flows back into the environment without being treated or reused.1Clean water is an essential part of daily life, from catchment all the way through to wastewater treatment, therefore analysis throughout the whole cycle ...

  • Testing the Waters

    Last summer’s wave of tropical storms left the East Coast scrambling to ensure drinking water quality. Water Quality Products editorial intern Raissa Rocha spoke with Marc Hamel of testing equipment manufacturer Horizon Technology Inc. to discuss the impact weather events may have on water quality. Raissa Rocha: What is your experience with ...


    By Horizon Technology, Inc.

  • Water Quality Models

    ' In order to determine the impacts of a particular discharge on ambient water quality, it is usually necessary to model the diffusion and dispersion of the discharge in the relevant water body. The approach applies both to new discharges and to upgrading of existing sources. This note provides guidance on models that may be applicable in the context of typical Bank projects.' Introduction ...


    By The World Bank

  • Sediment contact tests as a tool for the assessment of sediment quality in German waters

    A sediment contact test (SCT) battery consisting of five ecotoxicological test systems was applied to 21 native freshwater sediments characterized by a broad variety of geochemical properties and anthropogenic contamination. Higher plants (Myriophyllum aquaticum), nematodes (Caenorhabditis elegans), oligochaetes (Lumbriculus variegatus), zebrafish embryos (Danio rerio), and bacteria ...


    By John Wiley & Sons, Ltd.

  • Development of Water Quality Test Kit Based on Substrate Utilization and Toxicity Resistance in River Microbial Communities

    Methods for measuring toxicity or respiratory activity of microbial cultures can be used as tools for assessing the presence of chemicals and their impact on the streams. The proposed toxicity test is based on the respirometric characteristics of the bacteria according to the principals of Biolog’s microplate system. As the microorganism ...


    By University of Tehran

  • How to identify issues in water quality

    Water quality can mean different things to different people and therefore depends on what standard of quality one is looking for, for example, water may be fine for fish to live in but lack the quality required for human consumption. To measure the quality of water accurately, tests are carried out to identify several key indicators. These characteristics are then compared ...


    By Aquaread Limited

  • Development of a water quality assessment model: a water quality assessment model based on watershed characteristics by non-linear regression

    Here, a water quality assessment model (WQAM) is developed by non-linear regression as an alternative to physical watershed modeling in South Korea. Three cases and 10 scenarios are applied and reviewed to determine the most appropriate WQAM. The three cases are: (1) the area size allocation of sub-watersheds, (2) the watershed imperviousness ratio, and (3) the combination of the area size and ...


    By IWA Publishing

  • MIKE 11 model-based water quality model as a tool for the evaluation of water quality management plans

    Water quality models are important tools to test the effectiveness of alternative management plans on the water quality of water bodies. The main aim of this study was to develop and demonstrate use of a water quality model as a tool for evaluation of alternative water management scenarios for the river basin of Beijing, China. Considering Lao Hewan river landscape water circulation patterns and ...


    By IWA Publishing

  • Advanced Water Quality Techniques Course

    Abstract:The development of a strategic water quality monitoring program is based on prioritizing risks to public safety and economic reality. The development of global standardized methods and protocols for automated water quality monitoring would facilitate international communication of water quality information and comparison of standardized methods and protocols. The three primary methods ...


  • Derivation of a water quality guideline for aluminium in marine waters

    Metal risk assessment of industrialised harbours and coastal marine waters requires the application of robust water quality guidelines to determine the likelihood of biological impacts. Currently there is no such guideline available for aluminium in marine waters. A water quality guideline of 24 μg total Al/L has been developed for aluminium in marine waters based on chronic 10 % inhibition or ...


    By John Wiley & Sons, Ltd.

  • Community-based wastewater treatment systems and water quality of an Indonesian village

    This paper examines the impact of community-based water treatment systems on water quality in a peri-urban village in Yogyakarta, Indonesia. Water samples were taken from the wastewater treatment plants (WWTPs), irrigation canals, paddy fields and wells during the dry and wet seasons. The samples were tested for biological and chemical oxygen demand, nutrients (ammonia, nitrate, total nitrogen ...


    By IWA Publishing

  • Perceptions and determinants of households' participation in a randomized evaluation on water quality testing and information in southern Ghana

    In this paper, we analyze perceptions and determinants of households' participation in a randomized experiment on water quality testing and information in southern Ghana. Beneficiary households assessed the components of the intervention including its relevance and adequacy in improving understanding of water quality issues. Motivating and constraining factors to participation in the ...


    By IWA Publishing

  • Coupling microbiological testing and sanitary surveys in drinking water quality programs: results from Capiz Province, Philippines

    Developing countries often struggle to conduct laboratory-based water quality testing programs due to a lack of financial and technical resources. However, inexpensive, accurate, field-based tests are being developed which have the potential to overcome this barrier. This paper provides the results of an initiative by the Provincial Health Office in Capiz, Philippines, to conduct a first-ever, ...


    By IWA Publishing

  • Testing for Nitrates in Water, what are the Options?

    Nitrate is a naturally occurring substance in the environment and is commonly found in most water sources, it is usually only a cause for concern in areas where water supplies can be affected by farm runs offs and agriculture, its use as a fertiliser can cause increased levels in water supplies The ...


    By Camlab Limited

  • Analysis of Anionic Contamination & General Quality Testing in Water from Sewage Treatment Plants and Industrial Discharge & Effluents by Colorimetry

    Problem The high concentration of Industry, Agriculture and People in and around the United States has changed the “nature” of our environment. There are Toxic Metals coming from various metallurgical processes; Plating, Foundry, Smelting, Milling, etc., which are readily determined by Atomic Absorption Spectroscopy (AAS). Volatile Organics from the many Petrochemical-based operations are ...


    By Buck Scientific Inc

  • Assessing water quality in Europe using stratification techniques

    This report aims to provide information in relation to the trends of major nutrients in rivers. It focuses both on the trends considered as indicators of water quality status and on the possible differences in trends in relation to main driving forces (agriculture, urbanisation). Referring to the driving forces — pressures — state — impact — response (DPSIR)assessment framework of the EEA, the ...

  • Scientists submit suggestions for improved European water quality

    Although the European Water Framework Directive has been in place since 2000, some say revisions are needed to help the continent achieve even better water quality. Scientists from across Europe have carefully looked at the document to determine what is needed to help make the framework more effective. The directive, which addresses water pollution, says all bodies of water in Europe — ...


    By Fluence Corporation

  • Water quality prediction using machine learning methods

    This study investigates the performance of artificial intelligence techniques including artificial neural network (ANN), group method of data handling (GMDH) and support vector machine (SVM) for predicting water quality components of Tireh River located in the southwest of Iran. To develop the ANN and SVM, different types of transfer and kernel functions were tested, respectively. Reviewing ...


    By IWA Publishing

  • LIMS Key to Quality Data Management in Water Industry

    WEFTEC  has just  wrapped up its 2012 conference – the largest meeting of its kind in North America.  The Water Environment Federations’ annual meeting has again delivered comprehensive water quality education and training to thousands of water quality professionals.  The leading discussions at WEFTEC ...

  • Derivation of water quality guidelines for priority pharmaceuticals

    Pharmaceuticals can enter freshwater and affect aquatic ecosystem health. Although toxicity tests have been carried out for the commonly used pharmaceuticals, evidence‐based water quality guidelines have not been derived. High reliability water quality guideline values (GVs) have been derived for four pharmaceuticals, carbamazepine, diclofenac, fluoxetine and propanolol in fresh waters using a ...


    By John Wiley & Sons, Ltd.

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