To assess the problem of contamination of heavy metals in the drinking water to the city by the Nikko River area as compared with standard values according to the World Health Organization. (WHO,2004)
To assess the contamination of heavy metals in the drinking water of New River Bay by comparison with the standard by the World Health Organization (WHO, 2004).
To evaluate the contamination of heavy metals in drinking water by the river - New by comparing with the standard, according to the World Health Organization (WHO 2004).