The Kingdom of Saudi Arabia (KSA) is one of the rising countries in the Gulf region but always scared of water; being present in the arid desert. Among some water resources groundwater is one of the most significant ones in this country but unfortunately is being contaminated by the toxic metal ions. The present article describes the status of groundwater contamination by toxic metal ions. The meal ions analysed in the groundwater of KSA are Al, Cr, As, Cd, Ba, Co, Cu, Fe, Li, Hg, Mn, Ni, Se, Pb, V and Zn. This article describes the different groundwater resources in KSA, toxicities of the metal ions, metal ions contamination in the groundwater and sources of metal ions pollution. Besides, efforts are made to discuss the future challenges and the remediation measures; needed to protect the groundwater resources. This article will be important to the academicians, researchers, industry persons and the regulatory authorities.

沙特阿拉伯王国（KSA）是海湾地区崛起的国家之一，但始终不缺水。存在于干旱的沙漠中。在一些水资源中，地下水是该国最重要的地下水之一，但不幸的是，地下水已被有毒金属离子污染。本文介绍了有毒金属离子对地下水的污染状况。在KSA的地下水中分析的膳食离子为Al，Cr，As，Cd，Ba，Co，Cu，Fe，Li，Hg，Mn，Ni，Se，Pb，V和Zn。本文介绍了KSA中不同的地下水资源，金属离子的毒性，地下水中的金属离子污染以及金属离子污染源。此外，我们努力讨论未来的挑战和补救措施；需要保护地下水资源。