نتایج جستجو برای: waterquality

تعداد نتایج: 45  

2011
Stephen D Preston Richard B Alexander David M Wolock

Management of the quality of the Nation’s water requires large quantities of information describing current conditions and related environmental factors. Such information is expensive to collect and difficult to interpret over large scales. To support the efficient use and interpretation of available water-resource information, the U.S. Geological Survey (USGS) developed a spatial water-quality...

Journal: :Online journal of biological sciences 2022

The objective of this researchwas to determine water quality in small-scale coffee production units theAmazon Region, Peru. characterization the factors associated with coffeefarmers was collected through surveys. Standard Methods for Examinationof Water and Wastewater (APHA) method used physicochemicaland microbiological parameters incoming (AE) (water humanconsumption) outgoing (AS) (wastewat...

Journal: :Pakistan journal of science 2023

The research aimed to evaluate the surface water quality of Gilgit city by comparingthe actual values physio-chemical and microbiological parameters with that national standardsfor drinking Pakistan. A total Sixteen samples were gathered from thestudy area analyze their quality. Multiple including fluoride, hardness, pH, nitrite,nitrate, chloride, TDS mapped spatially using inverse distance wei...

Journal: :International journal of economic and environment geology 2022

Quality standards have been a significant achievement for organizations worldwide. Environmental standardsshould be established in hospitals by coding ISO14001. Hospital water pollution can cause health issues nearby urbanareas and settlements. The study was aimed to estimate, characterize, use, response quality parameters onamplification of environmental coordination at General Lahore (GHL), t...

1999
R. H. Coupe M. A. Manning W. T. Foreman D. A. Goolsby M. S. Majewski

In April 1995, the U.S. Geological Survey began a study to determine the occurrence and temporal distribution of 49 pesticides and pesticide metabolites in air and rain samples from an urban and an agricultural sampling site in Mississippi. The study was a joint effort between the National WaterQuality Assessment and the Toxics Substances Programs and was part of a larger study examining the oc...

Journal: :Environmental management 1997
Helfield Diamond

/ Investigation of a delta marsh restoration project proposed forthe Don River in Toronto, Ontario, underlines several concerns aboutconstructed wetland projects designed for water quality improvement andaquatic habitat enhancement. The Don is a highly urbanized river that hasundergone significant physiographic modifications and continually receives acomplex mixture of conventional, metallic, a...

2003
T. R. MARET D. J. CAIN D. E. MACCOY T. M. SHORT

Benthic macroinvertebrate assemblages, environmental variables, and associated mine density were evaluated during the summer of 2000 at 18 reference and test sites in the Coeur d’Alene and St. Regis River basins, northwestern USA as part of the US Geological Survey’s National WaterQuality Assessment Program. Concentrations of Cd, Pb, and Zn in water and (or) streambed sediment at test sites in ...

2010
Robert Bos Richard Carr Bernard Keraita

In and around urban areas pollution of natural water bodies is on the rise. As a result, wastewater irrigation is an increasingly common reality around most cities in the developing world. For reasons of technical capacity or economics, effective treatment may not be available for years to come; therefore, international guidelines to safeguard farmers and consumers must be practical and offer f...

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