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Physicochemical and microbiological analysis of borehole water in Ihiagwa Local Government Area of Imo State, Nigeria

100%

Osuji A. C., Izunobi L., Iheme O. U.

World News of Natural Sciences

2024

vol. 57

300-309

The bacteriological and physicochemical properties of 3 samples of borehole water collected from the Federal University of Technology hostels at Ihiagwa in Imo state were determined and contrasted with the WHO permissible limit. The study results indicated the presence of TCC and TTCC at 37 °C and 45 °C respectively. The values of TCC and TTCC in all the samples exceeded the WHO limit (0.00E+00± 0.00E+00). However, the value of TFCC in all the samples met the WHO standard. The means separation achieved using Turkey HSD showed that the means of TCC and TTCC of sample C were significantly different from those of samples A and B statistically at 5%. The physicochemical parameters showed that the samples were slightly acidic. They fell outside the acceptable pH limits by WHO and NIS (6.5 – 8.5). The study also showed that turbidity and total suspended solids (TSS) were not detected in any of the samples analyzed. Total dissolved solids were generally low across all the samples and fell within the WHO-approved standard limits of 500 mg/l. This shows that the borehole water in the area was quite fresh in the locations. The electrical conductivity (EC) for all samples fell within the permissible limit of 500 µS/cm set by WHO. From the analysis, it was observed that the electrical conductivity of the samples increased with increasing total dissolved solids. The study concluded that borehole water sources in the study area were polluted and unsafe for human consumption. The study recommended that water quality analysis should be carried out on all the boreholes in the hostels regularly. This will ensure that incidences of contamination are noticed earlier for remedial action to be taken, to minimize acute problems of water-related diseases, which are endemic to human health.

Water Quality Index and Human Health Risk Assessment of Class B Swimming Pools in Owerri Municipal, Nigeria

88%

Ngozi V. E., Nwachukwu J. I., Chidera Lydia U. C., Wirnkor V. A.

World News of Natural Sciences

2021

vol. 38

60-82

Assessments of public swimming pools in Owerri municipal, Imo state, Nigeria was carried out for the purpose of determining the suitability of water for swimming in this fun loving town of Nigeria. Five public pools were selected by purposive sampling from more than 30 pools in the area. Water samples were collected in the morning and evening from pools and analyzed in triplicates for physicochemical properties and heavy metals content by using standard method for water analysis and Atomic Absorption Spectrometer. Data obtained were compared with WHO and EPA standards for drinking and recreational water and modeled on the Water Quality Index (WQI). Results revealed that pH ranged from 7.10±0.02 to 8.1±1.27 pH units, EC ranged from 40 ±3.11 µS/cm to 80±3.44 µS/cm, COD value ranged from 0.08±0.07 to 1.02 ±0.91, BOD value ranged from 0.03±0.02 to 3.14±0.13, dissolved oxygen (DO) ranged 3.9±1.77 mg/kg to 9.3±2.41 mg/kg, suspended solids ranged from 6.43±8.21 mg/l to 42.44±7.00 mg/l, total dissolved solids (TDS) ranged from 22±2.90 mg/l to 97.98±8.79 mg/l. The major cations were below the standard. Nitrate ranged from 0.91±0.02 mg/l to 0.96 mg/l, sulphate ranged from 2.34±0.10 mg/l to 2.81±0.11mg/l, phosphate ranged from 0.34±0.02 mg/l to 0.65±0.02 mg/l while chloride ranged from 12.75±1.89 mg/l to 31.89±2.04 mg/l with mean 24.23 mg/l. Except for chloride, all other studied anions were lower than the permissible limit set by WHO/EPA. Concentration of lead (Pb), iron (Fe), Copper (Cu) were also below the permissible limit. The individual WQ indexes showed A (3.32), B (5.44), C (10.08), D (12.40) and E (9.77) with average WQI of 8.20 suggesting that the swimming pools are of “Excellent water quality”, thereby suggesting safe swimming pools for recreational activities in the study area. Values of exposure pathways for all metals at all swimming.

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2 World News of Natural Sciences

1 2024

1 2021

1 Chidera Lydia U. C.

1 Iheme O. U.

1 Izunobi L.

1 Ngozi V. E.

1 Nwachukwu J. I.

1 Osuji A. C.

1 Wirnkor V. A.

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Physicochemical and microbiological analysis of borehole water in Ihiagwa Local Government Area of Imo State, Nigeria

Water Quality Index and Human Health Risk Assessment of Class B Swimming Pools in Owerri Municipal, Nigeria