scholarly journals Remote Sensing Could Predict Well Water Quality After Floods

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Jackie Rocheleau
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Water Sources ◽  
Well Water ◽  
New Research

After a flood, most people rely on officials to test public water sources. Private well owners are on their own, with little data to guide testing and treatment. New research seeks to change that.

scholarly journals Assessment of Water Quality Index and Heavy Metal Contents of Underground Water Sources in Doma Local Government Area, Nasarawa State, Nigeria

2020 ◽  
pp. 27-40
Author(s):  
Obaje Daniel Opaluwa ◽  
Yahaya Mohammed ◽  
Suwabat Mamman ◽  
Ademu Tanko Ogah ◽  
Danjuma Ali
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Water Quality Index ◽  
Quality Index ◽  
Water Sources ◽  
Total Hardness ◽  
Well Water ◽  
Mean Values ◽  
Metal Contents ◽  
Dug Well

Water quality index and heavy metal contents of underground water sources in Doma Local Government Area, Nasarawa State, Nigeria was assessed to ascertain the suitability of the water for domestic purpose. Physicochemical parameters; temperature, turbidity, TDS, TSS, pH, EC, total hardness, alkalinity, chloride, nitrate and sulphates in the water samples were determined using standard methods of analysis. The water quality index (WQI) was also evaluated using known standard method. The heavy metal contents were determined using atomic absorption spectrophotometric method. The results of the physicochemical analyses shows that in borehole and hand dug well water, the respective mean values were temperature (27.11±0.45 and 27.41±0.55 °C), turbidity (1.51±0.54 and 2.56±1.04 NTU), TDS (230.00±87.75 and 358.67±91.46 mg/dm3), TSS (3.64±1.25 and 4.17±4.17 mg/dm3), pH (5.63±0.69 and 6.60±0.95), EC 277.16 and 296.29±26.52 µS/cm), total hardness (90.00±15.55 and 125.13±16.33 mg/dm3), alkalinity (8.87±.083 and 9.24±1.08 mg/dm3), chloride (20.59±14.62 and 21.22±10.13 mg/dm3, nitrate (0.024±0.04 and 0.01±0.01 mg/dm3) and sulphates (1.05±0.74 and 2.09±0.45 mg/dm3). It was revealed that all the physicochemical parameters for both borehole and hand dug well water had values that were within the standard permissible values recommended by regulatory bodies, NSDWQ and WHO except for the pH of the borehole water which was not within the recommended range and which showed the water to be slightly acidic and which could attributable to the nature of the host rocks. WQI for borehole and hand dug well water were 29.65 and 27.38 respectively with the implication that both water sources presented good water quality for drinking based on the water quality index and water quality status. The results of the heavy metal analyses shows that in borehole and hand dug well water, the respective mean values were Cd (0.003±0.002 and 0.010±0.002 mg/dm3), Cr (0.187±0.075 and 0.19±0.070 mg/dm3), Cu (0.040±0.010 and 0.804±0.805 mg/dm3), Fe (0.500±0.330 and 0.916±0.543 mg/dm3), Pb (0.010±0.010 and 0.015±0.007 mg/dm3) and Zn (0.290±0.120 and 0.072±0.072 mg/dm3). The results shows that Cd, Cu, Pb and Zn for both borehole and hand dug well water had mean values that were within the standard permissible values recommended by NSDWQ and WHO while Cr and Fe had mean values that were higher and which can be attributed to anthropogenic activities close to the water sources. It is recommended the groundwater in these selected communities be monitored regularly and that there is the need for the water to be treated before use because of those parameters that are off the standards to avoid associated health risks.

scholarly journals Organoleptic and palatability properties of drinking water sources and its health implications in Ethiopia: a retrospective study during 2010-2016

2018 ◽  
Vol 5 (4) ◽  
pp. 221-229
Author(s):  
Sisay Derso Mengesha ◽  
Abel Weldetinsae ◽  
Kirubel Tesfaye ◽  
Girum Taye
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Retrospective Study ◽  
Water Samples ◽  
Water Sources ◽  
Spring Water ◽  
Well Water ◽  
Drinking Water Sources ◽  
The Mean ◽  
Mean Concentration

Background: This retrospective study aimed to investigate the physicochemical properties of drinking water sources in Ethiopia and compare the water quality with the health-based target. For this purpose, the water quality database of Ethiopian Public Health Institute (EPHI) from 2010 to 2016 was used. Methods: The concentration and other properties of the water samples were analyzed according to the Standard Methods of Water and Wastewater analysis. Quality control and quality assurance were applied in all stages following our laboratory standard operation procedures (SOPs). Results: The concentration of the selected parameters varied based on the type of water sources. The mean concentration of turbidity was higher in spring water (21.3 NTU) compared to tap (12.6 NTU) and well (3.9 NTU) water sources. The mean concentration of total dissolved solids (TDS), electrical conductivity (EC), sodium (Na+), and sulfate (SO4 -2) was found to be higher in spring water sources than tap and well water sources. Comparably, the concentration of hardness, calcium, and magnesium was found to be higher in well water sources than spring and tap water sources. The bivariate analysis indicated that out of 845 analyzed water samples, more than 50% of the samples from Oromia region had turbidity, pH, TDS, hardness, Ca++, K+, and Na+ within an acceptable limit. In addition, the logistic regression analysis showed that water quality parameters were strongly associated with the type of water sources and regional administration at P<0.05. Conclusion: More than 80% of the samples analyzed from drinking water sources were in agreement with WHO guidelines and national standards. However, the remaining 20% specifically, pH (25%), calcium (20%), hardness (18.1%), TDS (15.5%), and turbidity (13.3%) analyzed from improved water sources did not comply with these recommendations. Due to objectionable or unpleasant taste, people may force to look for alternative unprotected water sources that lead to health concerns.

scholarly journals Groundwater Chemistry at Deep Aquifer in Koyra: Khulna, Bangladesh

2021 ◽  
Vol 16 (2) ◽  
pp. 460-471
Author(s):  
Tusar Kumar Das ◽  
Molla Rahman Shaibur ◽  
Mohammad Mahfuzur Rahman
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Samples ◽  
Quality Standard ◽  
Water Sources ◽  
Groundwater Chemistry ◽  
Well Water ◽  
Deep Aquifer ◽  
Water Quality Standard ◽  
Tube Well

Koyra (Khulna District) is the coastal Upazila of Bangladesh and is very susceptible to salinity intrusion. The surface and shallow tube well water in the Upazila is naturally saline. The quality of subterranean tube well water in the deliberate area is hardly presented for different Unions of Koyra. Dakshin Bedkashi Union of Koyra is very saline prone. Therefore, the groundwater chemistry of Dakshin Bedkashi Union was determined to legalize if the groundwater is fit for drinking and irrigation or not. Spatially dispersed 30 water samples were collected from the deep aquifer (550 to 700 feet depth) in December, 2016 and analyzed for physico-chemical properties. The outcomes were compared with WHO, USEPA and BBS drinking water quality standard and with FAO standard for irrigation purpose. The pH varied from 6.73 to 8.33, indicating that the water samples were within the WHO drinking water quality standard. The TDS showed a long range variation (230.5 to 2052.0 ppm) with an average of 841.23 ppm, of which 33% of water sources exceeded BBS standard value. The mean value of salinity was 0.65 (±0.43) ppt and EC was 1,400.9 (±904.18) µS cm-1. The loads of key ions were ranked as Na+> Ca2+> Mg2+> K+ and HCO3-> Cl-> SO42-> NO3-> PO4-. The Piper diagram demonstrated that the existing hydro-chemical facies of groundwater were Na+-Cl--HCO3- and Na+-Ca2+-HCO3- type. The Gibbs diagram illustrated that the chemical arrangement of groundwater is mainly misrepresented by rock weathering. Silicate weathering was the profuse process along study area. The Wilcox diagram proved that the greater water sources were allowable to suspicious for irrigation. The core component analysis ensured that rock suspension and sea water intrusion was the primary source of ions in groundwater. The controlling factors of groundwater chemistry were typically related to geologic factors, while the anthropogenic factors have not any momentous effects.

scholarly journals Description of Escherichia Coli In Well Water

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Febry Risdhityatama Fahrurriza ◽  
Surati Surati
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Drinking Water ◽  
Quantitative Research ◽  
Water Sources ◽  
Well Water ◽  
Quality Of Water ◽  
Water Wells ◽  
Escherichia Coli Bacteria

Most of the wells are still used as a source of drinking water. This well is widely used in the village of Rejosari Grobogan. Regulation of the Minister of Health No. 492 of 2010 concerning the Requirements for Quality of Drinking Water is 0 per 100 ml of sample. The existence of Escherichia coli in water sources affects water quality which has an impact on consumer health, so it is necessary to know whether the quality of water sources from dug wells meets drinking water standards. To find out whether Escherichia coli bacteria were present in the well water of Rejosari Grobogan Village. The research conducted included a type of quantitative research with a descriptive design. The sample used was 11 samples. The results of the examination showed that there was an Escherichia coli bacterium in the well water of Rejosari Grobogan Village with an average number of bacteria 1.8 per 100 ml of sample. Research on samples was carried out using the Most methodProbable Number (MPN). Rejosari Grobogan village water wells were found to contain Escherichia coli bacteria and not meet water quality standards in accordance with Minister of Health Regulation No. 32 of 2017.

Monitoring land use change in the Lake Taupo catchment between 1975, 1990 and 2002 using satellite remote sensing data

2007 ◽  
pp. 17-22
Author(s):  
H. Lilienthal ◽  
A. Brauer ◽  
K. Betteridge ◽  
E. Schnug
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Land Use ◽  
Land Use Change ◽  
Satellite Remote Sensing ◽  
Remote Sensing Data ◽  
Native Vegetation ◽  
Lake Water Quality ◽  
Livestock Farming ◽  
Slow Decline

Conversion of native vegetation into farmed grassland in the Lake Taupo catchment commenced in the late 1950s. The lake's iconic value is being threatened by the slow decline in lake water quality that has become apparent since the 1970s. Keywords: satellite remote sensing, nitrate leaching, land use change, livestock farming, land management

Impact Assesment of Municipal Solid Waste on Ground Water Quality in and around Kapulauppada Dumpyard in GVMC using Remote Sensing and GIS Techniques

2018 ◽  
Vol 6 (11) ◽  
pp. 970-975
Author(s):  
Killana Dileep ◽  
G.Jaishankar . ◽  
P. Jagadeeswara Rao ◽  
M. Durgadevi ◽  
M.D.R Srinivas
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Municipal Solid Waste ◽  
Ground Water ◽  
Solid Waste ◽  
Remote Sensing And Gis ◽  
Ground Water Quality ◽  
Gis Techniques

DETERMINATION OF WATER QUALITY OF NATURAL WATER SOURCES IN STATE PARKS AROUND THE SUSQUEHANNA RIVER VALLEY

2016 ◽  
Author(s):  
Eric Thompson ◽  
◽  
Cynthia Venn ◽  
Christopher P. Hallen
Keyword(s):  
Water Quality ◽  
Natural Water ◽  
Water Sources ◽  
River Valley ◽  
State Parks ◽  
Susquehanna River
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