Entropy water quality index and probabilistic health risk assessment from geochemistry of groundwaters in hard rock terrain of Nanganur County, South India

Geochemistry ◽  
2020 ◽  
Vol 80 (4) ◽  
pp. 125544 ◽  
Author(s):  
Narsimha Adimalla ◽  
Hui Qian ◽  
Peiyue Li
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Water Quality Index ◽  
Quality Index ◽  
South India ◽  
Hard Rock ◽  
Hard Rock Terrain

scholarly journals Determination of Water Quality Index of Drinking Water Sources and Health Risk Assessment of Arsenic-Contaminated Rural Areas in Basirhat-1 Block of West Bengal

2020 ◽  
Vol 9 (3) ◽  
pp. 677-684
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Drinking Water ◽  
Cancer Risk ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Quality Index ◽  
West Bengal ◽  
Water Sources ◽  
Tube Wells

Arsenic (As) contamination in groundwater is a major environmental problem in West Bengal. People in rural West Bengal are mostly dependent on community deep tube wells for drinking purpose. North 24 Praganas in West Bengal is one of the most Arsenic affected districts in India. Most of the deep tube wells currently being used in North 24 Praganas have already been declared to be contaminated with Arsenic. Time to time evaluation of suitability of these water sources for drinking purposes and the assessment of health risk are very essential for knowing the severity of the condition and accordingly take timely mitigation measures. In this paper, the Water Quality Index(WQI) has been determined and Health Risk Assessment has been done for drinking water sources currently in use in one of the chronically Arsenic affected Basirhat-1 block of North 24 Praganas. For calculating WQI, the weighted arithmetic water quality index method has been adopted by taking pH, TDS, Sulphates, DO(Dissolved Oxygen), total Alkalinity, Total hardness, EC, Chloride and total Arsenic as parameters. The Health Risk Assessment has been done by considering the total Arsenic found in the water samples. For Health Risk Assessment, cancer and non-cancer risk assessment were done by following the deterministic method of risk assessment recommended by US EPA (Environmental Protection Agency). The WQI results indicates that all the sampled deep tube wells of the studied area are highly unsuitable for drinking purpose. Arsenic content was found to be 4 to 24 times higher than the permissible limit. The Hazard Quotient of the sampled studied sources was calculated to be in the range of 2 to 9 which signifies the vulnerable health risk due to non-carcinogenic effect due to Arsenic. The cancer risk assessment gives a further alarming picture of the area with 1-4 persons for every 1000 population in Basirhat-1 block are prone to Cancer risk due to Arsenic. The study recommends immediate measures in the area to make all the current drinking water sources Arsenic free.

scholarly journals Evaluation of Chemical Parameters of Urban Drinking Water Quality along with Health Risk Assessment: A Case Study of Ardabil Province, Iran

2021 ◽  
Vol 18 (10) ◽  
pp. 5179
Author(s):  
Reza Aghlmand ◽  
Saeed Rasi Nezami ◽  
Ali Abbasi
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Water Distribution ◽  
Hazard Quotient ◽  
Hazard Index ◽  
World Health ◽  
Study Region

In recent years, in addition to water resources’ quantity, their quality has also received much attention. In this study, the quality of the urban water distribution network in northwestern Iran was evaluated using the water quality index (WQI) method. Then, some important trace elements were investigated, and finally, the health risk assessment was evaluated for both carcinogenic elements (Ni, Cd, Cr, Pb, and As) and non-carcinogenic elements (Ca, Mg, Na, K, F, NO3, and Cu) using carcinogenic risk (CR) and hazard quotient (HQ), respectively. In the present study, the WQI was calculated based on both World Health Organization (WHO) and Iranian drinking water standards. Comparing the results of these standards revealed that the WQI based on the Iranian standard was slightly higher. Regarding the calculated WQI for the study region, the status of water quality for drinking consumption is in the good water quality class (25 < WQI < 50). It was observed that Cu and Cd have the highest and lowest concentrations in all sampling points, respectively. Hazard Index (HI) results showed that the non-carcinogenic substances studied had a low risk for both adults and children (<1.0). However, the CR results showed that Ni, Cd, and As were above the desired level for both children and adults. The results of this study can be applied for efficient water management and human health protection programs in the study area.

Sign in / Sign up

Export Citation Format

Share Document