Hydrochemistry assessment of Surface and Groundwater Quality by GIS and a Heavy Metal Pollution Index (HMPI) Model in a Hawija area, Kirkuk, north Iraq

Hydrochemistry

Abstract

The drinking water quality of the Hawija region's surface and groundwater has been evaluated using the Heavy Metal Pollution Index (HMPI). Where Some residents use groundwater for drinking. The wells in the Hawija region were used to gather forty groundwater samples. These samples were shipped to (Acme Lab) in Canada for analysis. The World Health Organisation (WHO) and Environmental Protection Agency (EPA) classification of water quality and its suitability for diverse uses will also be compared with the results of the current study. 40 groundwater samples were taken, and 5 samples (12.5%) were judged to have low pollution levels, 26 samples (65%) to have medium levels, and 9 samples (22.5%) to have high levels of pollution during the low flow season. 30 samples (or 75% of the total) of the groundwater samples obtained during the high flow season were rated as having low pollution, while 10 samples (or 25%) were rated as having medium pollution. This shows that a large portion of the groundwater samples in the study area are unfit for human consumption. In the low flow season, the HMPI values ranged from 8.38 to 148.68, with a mean of 32.43 in the high-flow season, they ranged from 3.55 to 29.23, with a mean of 8.54. The HMPI values of surface water ranged from 3.75 to 77.64 and had a mean of 26.101 during the low-flow season, whereas they varied from 4.19 to 26.35 and had a mean of 11.25 during the high-flow season.