well water level indicator Articles

  • Train derailment prompts contaminated land investigation - Case study

    On March 30th 2015 a long freight train, transporting a variety of goods including lumber and chemicals, wound its way through the state of Mississippi. At around 5pm, part of the train failed to negotiate a curved portion of the track in a rural area near Minter City, resulting in the derailment of nine railcars, one of which leaked chemicals onto agricultural farmland and woodlands. Emergency ...


    By Gasmet Technologies Oy

  • What are the main indicators of water quality?

    “Water is the driving force of all nature;” so said Leonardo da Vinci. The survival of our planet depends on the availability of water and the condition that it is in. It is therefore vital to make sure that it is able to provide a hospitable environment for those that live in it, and is free from harmful levels of substances for those that drink it. Not ...


    By Aquaread Limited

  • Using LC50 for metals as Water Quality indicator

    One of the causes of low yields or productive deficiencies, in the stage of production of fresh water, more gifts in the aquaculture industry of salmon in Chile, has its origin in the presence of naturally occurring metals, both in bodies of fresh water as in deep wells. The toxicity of metals such as Aluminum and Copper, others, has been described previously and their presence in waters of our ...


    By Aquaknowledge

  • Indicators of Pollution Management

    'The definition and selection of environmental performance indicators is still at an early stage but the use of indicators is increasing, both for the tracking of trends in pollution and other environmental issues at a large scale (national or regional) and also for the monitoring of Bank projects. This note provides a framework to assist in the selection of appropriate indicators for pollution ...


  • Environmental Indicator Report 2013 - Natural Resources and Human Well-Being in a Green Economy

    In 2010, The European environment — state and outlook 2010: synthesis (EEA, 2010d) emphasised the increasingly systemic nature of environmental challenges and highlighted the need for greening the economy. It argued that further resource efficiency gains have to be realised to ensure resilient ecosystems that can deliver the natural resources and ecosystem services that we depend on. In ...

  • Hand-pumps as reservoirs for microbial contamination of well water

    The retention and release of total coliforms and Escherichia coli was investigated in hand-pumps removed from tubewells tapping a faecally contaminated aquifer in Matlab, Bangladesh, and from a new hand-pump deliberately spiked with E. coli. All hand-pumps were connected to reservoirs of sterile water and flushed. Faecal coliforms were observed in the discharge from all three of ...


    By IWA Publishing

  • Microbial source tracking of private well water samples across at-risk regions in southern Ontario and analysis of traditional fecal indicator bacteria assays including culture and qPCR

    Many people living in rural areas rely on privately owned wells as their primary source of drinking water. These water sources are at risk for fecal contamination of human, wildlife, and livestock origin. While traditional bacteriological testing involves culture-based methods, microbial source tracking (MST) assays present an opportunity to additionally determine the source of fecal ...


    By IWA Publishing

  • Determination of diurnal water level fluctuations in headwaters

    The aim of this paper is to study diurnal fluctuations of the water level in streams draining headwaters and to identify the controlling factors. The fieldwork was carried out in the Gryżynka River catchment, western Poland. The water levels of three streams draining into the headwaters via a group of springs were monitored in the years 2011–2014. Changes in the water pressure and water ...


    By IWA Publishing

  • Acoustiblok® Quiets Well Motor Noise for California Water District

    Acoustiblok recently resolved a noisy well motor issue that was affecting some nearby residents for Three Valleys Municipal Water District (Three Valleys MWD) in California. Ben Peralta, a Three Valleys MWD engineer working on the project said, “The new Acoustiblok All Weather Sound Panels perform better than the old ...


    By Acoustiblok International

  • If the well runs dry — climate change adaptation and water document actions

    'Our water is shut off once or twice a month, sometimes more,' says Baris Tekin from his apartment in Besiktas, an historic district of Istanbul, where he lives with his wife and daughter. 'We have about 50 litres of bottled water in the apartment for washing and cleaning, just in case. If the water is off for a really long time we go to my father's place or to my wife's parents,' says Baris, an ...

  • Use of Eight Well Purging and Sampling Record

    This article describes a groundwater well purging and sampling form that can be downloaded at our website. A click on the articles button will take you to a list of Monitoring Tips and Procedures articles, one of which is the sampling form. The form can be used to record  indicator parameters pH, conductivity, temperature, etc., taken during ...


    By RotaPump, Inc

  • Assessing sanitation service levels

    Conventional sanitation ladders rank sanitation in increasing complexity of technological options. However, sanitation improvement is not as straightforward as the concept of “a ladder” with incremental improvements, might suggest. For example, from the user perspective, a VIP toilet may in some circumstances be a better option than a septic tank system. There is a wide gap between ...


    By IWA Publishing

  • Are You Well Equipped for Forklift Truck Cleaning?

    There are many types of pressure washing equipment available for washing forklift trucks, trailers, tractors, and similar vehicles. However, not every machine can claim to be right for forklift truck cleaning. Before you purchase a power washing machine for the purpose, you need to ask yourself if the machine will fulfill your requirements. Forklift truck cleaning requires machines with moderate ...


    By Daimer Industries Inc.

  • GWPD 4—Measuring water levels by use of an electric tape

    VERSION: 2010.1 PURPOSE: To measure the depth to the water surface below land-surface datum using the electric tape method. Materials and Instruments An electric tape, double-wired and graduated in feet, tenths and hundredths of feet. Electric tapes commonly are mounted on a hand-cranked and powered supply reel that contains space ...


    By HERON Instruments Inc.

  • Amplification of Indicator Bacteria in Organic Debris on Southern California Beaches

    INTRODUCTION Certain recreational beaches in southern California frequently exceed state water quality standards for indicator bacteria (total coliform, fecal coliform, and enterococcus). In San Diego County, two sites have been particularly problematic: Mission Bay, a large coastal embayment; and Dog Beach at the mouth of the San Diego River. Recent studies designed to investigate sources of ...


    By Weston Solutions, Inc

  • A method for reducing purge volumes in deep monitoring wells: a purging experiment.

    Regulatory agencies often require three well casing volumes or more be purged prior to collection of groundwater samples for chemical analysis. Costs are high for testing and disposing of potentially hazardous purge water; therefore, efforts must be made to minimize waste-water volume while obtaining representative groundwater samples. Lockheed sponsored a purge experiment on two deep monitor ...


    By Hargis + Associates Inc

  • EPA Technology News & Trends - Tacoma “Well 12A” Superfund Site

    The U.S. EPA Region 10 office uses an adaptive site management approach that relies on high-resolution site characterization (HRSC) techniques for strategic sampling at the Well 12A project area. This approximate one-square-mile project area is one of three at the 2.5-square-mile Commencement Bay-South Tacoma Channel Superfund site in Tacoma, Washington. The vicinity of Well 12A, one of 13 wells ...


    By TRS Group, Inc.

  • Desk based review of current knowledge on pharmaceuticals in drinking water and estimation of potential levels

    The Drinking Water Inspectorate commissioned this review to identify all relevant, robust studies that investigate pharmaceutical concentrations in raw or treated water, or factors affecting those concentrations. This summary of existing knowledge will be taken forward and used for the systematic evaluation of the potential for different pharmaceuticals to reach water. There are about 3000 ...

  • Assessment of marine ecosystem services indicators: Experiences and lessons learned from 14 European case studies

    This paper shares the experiences, observations and discussions that occurred during the completing of an ecosystem services' (ES) indicator framework to be used at European Union and Member States' level. The experience base was drawn from three European research projects and 14 associated case study sites that include 13 transitional‐water bodies (specifically 8 coastal lagoons, 4 riverine ...


    By John Wiley & Sons, Ltd.

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