Microbial Contamination of Hand Dug Wells and Pit Latrines in Fiapre in the Sunyani, Ghana
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JENRM, Vol. 4, No. 1, 85-92, 2017 Research Article Microbial Contamination of Hand Dug Wells and Pit Latrines in Fiapre in the Sunyani, Ghana. S. F. Gyasi1*, H. Abdul-Rashid2, T. Boakye2, R. Abugre2, H. K. Korda2 Abstract Water is an essential resource and contributes immensely to the survival of man. This study investigated the microbial quality of hand dug wells sited near pit latrines in households of Fiapre community. Water samples were taken from five hand-dug wells sited near pit latrines over a period of 6 months. Analysis of the results based on selected physicochemical parameters showed that, SP4 was the most acidic (5.63) with SP5 being the most basic (6.15). The study also showed that, SP5 had the highest conductivity (160.33±17.59 µs/cm) compared to the other 4 wells. With respect to microbial indicators of pollution, the study 2 showed that, for total coliforms, SP4 was the most polluted with mean log10 of 1.9 x 10 colony forming units (cfu)/100mls. 2 2 This was followed by SP3 (log10 1.44 x10 cfu/100mls) and then SP5 (log10 of 1.09 X 10 cfu/100mls). With respect to Escherichia coli, the results showed that, SP2 was the most polluted with cfu counts of 18.25cfu/100ml whiles drinking water from SP4 was the least polluted (4 cfu/100mls). Analysis of the results based on Enterococci feacalis showed that, water from SP4 was the least polluted (log10 1.125 cfu/100mls). It was also observed there was a significant association between distances from dug-wells and the nearest pit latrine with respect to E. coli loads in the water samples. The study revealed that all the microbial indicators of pollution exceeded the EPA/WHO guidelines for drinking water making them unsafe for drinking. Keywords Pit latrine, hand dug wells, water quality, bacteriological parameters 1Dept. Basic & Applied Biology, University of Energy & Natural Resources, Ghana. Email: [email protected] 2Dept. Energy & Environmental Engineering, University of Energy & Natural Resources, Ghana *Corresponding author: S. F. Gyasi Email: [email protected] Contents activity. The human body is made up of about 70 percent water and this proportion of water has to be constantly 1 Introduction 85 replenish by more intake to sustain life as levels dips due 2 Materials and Methods 86 to physical activities ( Khandkar et al., 2002). But in 2.1 Study Design.......................... 86 this case, the water to be consumed should be potable and free from pathogens to avoid causing serious health 2.2 Study Area........................... 86 implications (WHO, 2006). Even though water appears 2.3 Data Collection......................... 86 to be in plentiful supply on the earth’s surface, it is still 2.4 Sampling Procedure...................... 87 considered a rare and precious commodity. The World 2.5 Laboratory Analysis...................... 87 Health Organization (WHO) estimates that close to a 2.6 Data Analysis.......................... 87 billion people mostly living in the developing world do not 3 Results 87 have access to safe and adequate water (UNICEF/WHO, 4 Discussion 89 2012). In fact only a small proportion of the earth’s water reserves (approximately 0.03%) constitutes global 5 Conclusion. 90 water resource which is available for human use ( Deniz, 6 Acknowledgement 91 2013). Currently, over 90% of water provided for some 7 Competing interest 91 small towns in India for domestic use is extracted from groundwater (HimanshuKulkarni and Shankar, 2015 ). References 91 Groundwater supply include hand dug wells, driven and drilled wells, rock and earth springs as well as infiltration 1. Introduction galleries. It is therefore not a surprise to uncover that groundwater is being currently being consumed in increas- Water is very essential and it plays a vital role in human ing quantities and is thus fast becoming affected by waste daily life. Most of its uses include domestic, agricultural, discharge (Klaus-Dieter Balke and Yan Zhu, 2008). industrial, recreation, power production and transporta- tion (João, 2010). It is a fundamental commodity that determines the way of life and survival of humans. Water A major source of contamination to groundwater es- is therefore very vital as humans use almost every daily pecially in West Africa is inappropriate human waste Microbial Contamination of Hand Dug Wells and Pit Latrines in Fiapre in the Sunyani, Ghana. — 86/92 exposure (UNICEF/WHO, 2012). This anomaly can be 2. Materials and Methods prevented through the provision and maintenance of ap- Fiapre is a town in the Sunyani West District in the propriate environmentally friendly waste disposal systems Brong-Ahafo Region of Ghana. It is very close to the and facilities (Shaheed et al., 2014). Good sanitation will regional capital town of the Brong-Ahafo Region, Sunyani not exist in the absence of safe and potable water. In and lies between latitude 7o 22 ’N and 7o 35 ’N and terms of dealing with safe drinking water, the execution longitude 2o 21 ’W and 2.3500oW with 932ft (284 m) of bad sanitation systems may have a detrimental effect above sea level. It shares boundary with Sunyani to the on human health since these two elements must correlate. north, Nsoatre to the south, Odumase to the west and Investigating the contamination of ground water pollution Bakoneaba to the east within the Suyani West. Fiapre, has been the centre of attention by numerous researchers an urban community constitutes about 10.19% of Sunyani for some time now (Howard et al., 2006; Priis-Ustun et West district population. al., 2004; Adejuwon 2011). All these researchers have concluded that, one major source of pollution to ground 2.1 Study Design water is the leachate from pit latrine. A cross section study relying on analytical laboratory approach was adopted for this study. Selected physio- It has been established that pit latrine offers a safe chemical and microbial indicators of pollution were em- and reliable method of excreta disposal. Pit latrines are ployed for this research. The physicochemical parameters especially suitable for rural areas where water is scarce were limited to temperature, pH and conductivity. For (Adejuwon 2011). This is mainly because of its simplicity microbial indicators of pollution, the study relied on total both in terms of operation and maintenance as it does coliform, feacal coliform and Enterococci feacalis. not depend solely on water borne units. As a result, they are more valuable in areas where water may not 2.2 Study Area be available (Howard et al., 2006). In spite of these Fiapre, a suburb of Sunyani within the Brong Ahafo advantages, pit latrines are one of the major contributing Region of Ghana was chosen for the study based on the factors to groundwater pollution when situated near (< large proportion of inhabitants who depend on water for 30m) water sources such as shallow wells and boreholes. drinking from hand dug wells. Although this community To correct this anomaly, city engineers have construction has the supply of treated water from the Ghana Water guidelines and regulations which require pit latrines to Company, taps have failed to flow regularly due to low be built, 30 meters or more away from water sources pressure experienced during most part of the year. (boreholes, streams etc) (Graham and Polizzotto, 2013). The people of Fiapre in Sunyani in the Brong Ahafo Region of Ghana depend on hand dug wells for water for drinking and other domestic purposes. The sitting of hand dug wells in this community in many cases have violated the mandatory 30 meters distance from their pit latrines due to inadequate home land size. The siting of these two facilities in the Fiapre community (hand dug wells and pit latrines) pose a significant health risk due to possible seepage of feacal matter into the underground water system. In the face of the above mentioned, it is been speculated that ground water/hand dug wells from Fiapre could be microbially compromised. The urgent questions that require an immediate answer is that, are there microbial indicators of pollution in these hand dug wells? Could the close proximity of these latrine pits pose a significant public health hazard by virtue of Figure 1. Study Area pathogenic assault on the individuals who resort to water from these wells for drinking? These and many other research questions was the rationale for this study. The 2.3 Data Collection main objective therefore of this work was to investigate the With the help of surveyors’ tape measure, distances be- microbial quality of hand dug-wells in relation to siting of tween the hand dug- wells and the pit latrines were mea- the pit latrines in Fiapre in Sunyani in the Brong-Ahafo sured and recorded. The geographic positions of the Region of Ghana as shown in Figure 1 below. selected hand dug-wells and their corresponding pit la- trines were determined using a global position system (TotemTech, Shenzen, China, 2012) GPS device. Microbial Contamination of Hand Dug Wells and Pit Latrines in Fiapre in the Sunyani, Ghana. — 87/92 Table 1. GPS Designated Sampling Points of Hand Dug and collection of gas in the Durham tubes. Wells 2.6 Data Analysis Designated Sampling Sites Coordinates Data acquired was first entered manually into Microsoft Well 1 (SP 1) N7o21’4.7412" W2o21’32.8248" Excel. The means and standard deviations of the phys- o o Well 2 (SP 2) N7 21‘10.4148" W2 21’31.3812" iochemical parameters were calculated. Bar charts were Well 3 (SP 3) N7o21‘24.408" W2o21‘27.684" Well 4 (SP 4) N7o21‘31.4388" W2o21‘5.2668" generated to present results of the bacteriological param- Well 5 (SP 5) N7o21‘24.4872" W2o21’3.1572" eters.