Investigation of borehole water contaminant profile at igwuruta solid waste dumpsite, Rivers State, Nigeria

Ugbebor, John N.; Ntesat, B

doi:10.4314/njt.v38i2.33

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…The borehole water samples were slightly acidic below the WHO and FMEnv standard limits but increased along measured distance from the dumpsite. These findings corroborated with works of Bromssen [30,5,19,23]. While pH from the Agbada 2 (control) was 6.98.…”

Section: Physicalsupporting

confidence: 90%

“…One overwhelming challenge to environmentalists and government of the developing countries is the poor handling of MSW and the leachate percolation to groundwater aquifer from wastes dumpsites [14,17,12]. The problems caused by the leachate percolation include contamination of soil, surface and groundwater [21,22,23]. This research addressed the major concerns of Rumuosi and Igwuruta communities given the proximity of dumpsites to residential areas and utility boreholes.…”

Section: Introductionmentioning

confidence: 99%

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A Comparative Study on the Effects of Leachate on Groundwater in Selected Dumpsites in Rivers State, Nigeria

Ugbebor

Ntesat

2019

AJEE

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The health and environmental risk associated with unlined open waste dumpsites are worrisome. This study, therefore, evaluated the leachate and its final fate on groundwater pollution at selected solid wastes dumpsites in Rivers State. Leachate samples collected near the dumpsites were analyzed to determine the physical and biochemical characteristics. The two studied dumpsites indicated that the computed TCB were 296.33±6.22 cfu/100 ml and 182.68±21.33 cfu/100 ml respectively which were within the permissible limits of 400cfu/100 ml specified by World Health Organization (WHO) and Federal Ministry of Environment (FMEnv); which suggest low quantities of disease-causing agents in the groundwater. The total heterotrophic bacteria (THB) were 21x104 cfu/ml and 17x104 cfu/ml. These high values of THB may not be an indication of contamination of groundwater but it indicates a gradual decline in raw water quality. The values of SO42-, PO43-, TDS, DO, BOD and COD at the dumpsites were 196.52±6.26 mg/l and 9.12±0.59 mg/l, 139.23±3.19 mg/l and 3.81±0.68 mg/l, 5952.23±72.52 mg/l and 12663.33±490.95 mg/l;1.51±0.42. mg/l and 2.02±0.16 mg/l; 31.22±4.12 mg/l and 21.33±3.51 mg/l, and313.30±6.57 mg/l and 270.33±26.16 mg/l respectively which exceeded the standards of the WHO and FMEnv. The high values of analyzed parameters were an indication of the groundwater contamination. Heavy metals in the Rumuosi dumpsite indicated 11.31±1.33 mg/l, 11.01±0.67 mg/l, 361.84±12.31 mg/l, 118.03±5.74 mg/l and 84.77±4.84 mg/l for Pb, As, Mn, Fe and Zn respectively. While Heavy metals thresholds at Igwuruta were 0.004±0.005 mg/l, 0.04±0.07 mg/l, 0.05±0.08 mg/l, 0.08±0.14 mg/l and 0.15±0.04 mg/l respectively. Rumuosi thresholds exceeded the standards, indicating that the exposed local people in the nearby communities may experience cases of non-carcinogenic and carcinogenic health risk by drinking the groundwater. The leachate pollution index (LPI) at the studied dumpsites indicated 13.58 and 12.9 which exceeded the internationally accepted benchmark of 7.38; indicating that the Rumuosi leachate was more polluted than Igwuruta leachate. The analysis of variance (ANOVA) of the pollutant characteristics indicated a significant difference at p=0.05 across the physicochemical and biological indicators at Rumuosi dumpsite over Igwuruta dumpsite. The researcher recommended the practice of sanitary landfill which may reduce the risk of leachate percolation, a primary source of groundwater contamination.

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Section: Physicalsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Effects of Leachate on Groundwater in Selected Dumpsites in Rivers State, Nigeria

Ugbebor

Ntesat

2019

AJEE

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“…This simply suggests that there will be a high possibility of contamination of boreholes by septic tanks since the boreholes and septic tanks are usually found within the same compound. This has earlier been identified by numerous literature that most borehole water in Port Harcourt and other Nigerian cities are polluted with contaminants that could be linked to septic tanks and landfills [2,3].…”

Section: Introductionmentioning

confidence: 98%

Investigation of Groundwater Flow Direction in Port Harcourt, Nigeria

Ogbozige

Toko²

2020

ETJ

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The lack of reliable municipal water supply in the city of Port Harcourt has led to indiscriminate drilling of boreholes by the residents however, the direction of groundwater flow within the entire city has not been established. Hence, the research investigated the flow direction of groundwater in the study area in order to understand the best location for siting septic tanks and dumpsites with respect to the position of the existing or proposed borehole. This was achieved by determining the hydraulic heads (Hh) of twenty boreholes evenly distributed within the city by subtracting the static water level (SWL) from the corresponding earth surface elevation (E) with the use of a GPS and dipmeter. Results revealed that the hydraulic heads ranged from 0.14 – 23.16m while the surface elevation and static water level lies between 1.93 – 39.33m and 1.79 – 17.27m respectively. The contour map of the hydraulic heads indicated that the groundwater flows towards the southern and south-western directions hence, the residents were advised to take into cognizance when sitting dumpsites, landfills, and septic tanks with respect to proposed or existing boreholes.

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Investigation of borehole water contaminant profile at igwuruta solid waste dumpsite, Rivers State, Nigeria

Cited by 2 publications

References 11 publications

A Comparative Study on the Effects of Leachate on Groundwater in Selected Dumpsites in Rivers State, Nigeria

A Comparative Study on the Effects of Leachate on Groundwater in Selected Dumpsites in Rivers State, Nigeria

Investigation of Groundwater Flow Direction in Port Harcourt, Nigeria

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