Physico-chemical Quality of Harvested Rainwater from Some Settlements in Uyo, Nigeria

Moses, E. A.; Uwah, I. E.; Ebong, Godwin Asukwo

doi:10.9734/acsj/2016/27113

Cited by 2 publications

(7 citation statements)

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“…The turbidity level in water may be attributed to suspended particulate matter and the extent of the rainfall (Chapman 1996). The values are lower from the results obtained in the study (Moses et al 2016). This may be acceptable but considering the areas being industrial with a lot of anthropogenic activities.…”

Section: Resultscontrasting

confidence: 89%

“…The conductivity of the harvested rainwater was high with mean values of 254.06 ± 1.71 µs/cm in Emene, while the mean values of 221.78 ± 1.56 µs/cm were recorded in Iva Valley as compared with a lower value as shown in the study (Moses et al 2016). Although the values are below the NSDWQ limit of 1000 µs/cm, the high value shows presence of contaminants, especially electrolytes, which increases the conductivity of water (Adekunle et al2007).…”

Section: Resultssupporting

confidence: 42%

“…TDS mean values in the non-roof harvested rainwater are less than NSDWQ limit of 500 mg/l as shown in Emene 124.10 ± 1.15 mg/l and 117.72 ± 1.57 mg/l in Iva Valley. The values as shown are much higher when compared with values obtained in the studies in Uyo, Ile-Ife, Nigeria and Ayanfuri, Ghana as reported (Moses et al 2016;Okoye et al 2011;Amponsah et al 2015). This indicates that the harvested rainwater is not fit for domestic use.…”

Section: Resultsmentioning

confidence: 58%

“…The NSDWQ limit is 6.5-8.5, the value in Emene is slightly lower, but it is negligible, while the value in Iva Valley is within the standard limit. The studies by Okpoebo et al (2014) recorded a pH range of 5.1-7.6, and that by Moses et al (2016) shows a pH range of 5.54-6.38. The values show that the rainwater is mildly acidic.…”

Section: Resultsmentioning

confidence: 95%

“…The study carried out by Moses et al (2016), in Uyo, Nigeria, to determine the quality and acceptability of harvested rainwater for household purposes showed that the physicochemical parameters measured are below WHO limits for drinking water. The trace metals were shown to be within the WHO permissible limits except for Cu, Fe and Cd.…”

Section: Introductionmentioning

confidence: 98%

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Quality assessment of non-roof harvested rainwater in industrial layouts of Enugu, South East Nigeria

2023

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Non-roof harvested rainwater was studied in Enugu industrial layouts of Emene and Iva Valley to determine the quality of the water. The determination was based on physicochemical parameters and concentration of 7 heavy metals, namely copper (Cu), chromium (Cr), nickel (Ni), manganese (Mn), zinc (Zn), lead (Pb) and cadmium (Cd). The physicochemical parameters of the rainwater: pH, colour, turbidity, total dissolved solids, conductivity were determined using Hanna water quality checker, and the anions nitrate, sulphate, chloride and phosphate were analysed in accordance to standard methods. The concentrations of Cu, Cr, Ni, Mn, Zn, Pb and Cd were determined using FS240 Agilent Atomic Absorption Spectrophotometer. The mean values (mg/l) of the metals: Cu, Cr, Ni, Mn, Zn, Pb and Cd in Emene sample are as follows: 0.12 ± 0.01, 0.10 ± 0.02, 0.37 ± 0.02, 0.03 ± 0.01, 0.15 ± 0.01, 0.58 ± 0.11 and 0.17 ± 0.07, while Iva Valley sample recorded 0.08 ± 0.01, 0.04 ± 0.01, 0.82 ± 0.06, 0.09 ± 0.02, 0.26 ± 0.01, 0.48 ± 0.04 and 0.31 ± 0.08, respectively. Some of these values are within or above the standard limit of World Health Organization (WHO) and Nigeria Standard for Drinking Water Quality (NSDWQ). It is important to note that these metals are toxic, persistence and have the potential to bioaccumulate. Therefore, non-roof harvested rainwater is not ready to consume water without some form of treatment. Monitoring, treatment and awareness on the harvesting and use of rainwater should be emphasized.

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Section: Resultscontrasting

confidence: 89%

Section: Resultssupporting

confidence: 42%

Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

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Quality assessment of non-roof harvested rainwater in industrial layouts of Enugu, South East Nigeria

2023

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Evaluation of the effect of different conventional roof types and industrial activity on harvested rainwater in Southern Nigeria

Nicholas,

Ukoha

2023

Discov Water

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Harvested rainwater is still the only source of acceptable drinking water for rural communities in Nigeria and in some countries, where there are no water networks and it is the rooftop rainwater harvesting that is being exercised for the potable and non-potable usages. This study was aimed at evaluating the effect of roof types and industrial activity on rainwater quality by analysing the physico-chemical/bacteriological characteristics, heavy metals and investigating the metal composition of the roof types. Rainwater was harvested from long-span aluminium, asbestos, corrugated iron, Cameroon zinc, stone-coated tiles roof run-offs and directly from the sky in the urban and rural areas of Imo State between the months of April-July, 2017. The results were compared with water quality standards (NAFDAC, USEPA, WHO and NSDWQ) for drinking water and Water Quality Index (WQI) ratings since there is no standard for rainwater quality. Roofs ages from < 5, 5–10, 15–20, and > 25 years in use were considered. Heavy metals were analysed using Flame-AAS; other parameters were analysed using standard methods. The WQI ratings were calculated using the weighted arithmetic method. Results show mean values ranging from 5.70 to 6.60 for pH, E.coli (not detected) and heavy metals (mg/L) burden of 0.00–0.09 for Pb, Cr (0.00–0.79), Zn (0.00–0.06), Fe (0.00–0.50) and Al (0.00–0.63). The WQI ratings gave excellent water to unfit for drinking water quality in both urban and rural areas. Since the harvested rainwater was not free of contamination, a few helpful recommendations were suggested for positive impacts in Nigeria as a whole.

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Physico-chemical Quality of Harvested Rainwater from Some Settlements in Uyo, Nigeria

Cited by 2 publications

References 0 publications

Quality assessment of non-roof harvested rainwater in industrial layouts of Enugu, South East Nigeria

Quality assessment of non-roof harvested rainwater in industrial layouts of Enugu, South East Nigeria

Evaluation of the effect of different conventional roof types and industrial activity on harvested rainwater in Southern Nigeria

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