**4. Conclusions**

In total, 47 water samples were collected from 13 soums to study the suitability of groundwater for drinking purposes. The major conclusions are:


**Author Contributions:** O.B. wrote the paper and E.T. carried out data preparation. The field study was performed by all (O.B., E.T., O.-E.B., R.B. and G.-E.E.). All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by Governor of Sukhbaatar province.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The authors acknowledge the financial support received by the Governor of Sukhbaatar province.

**Conflicts of Interest:** The authors declare no conflict of interest.
