**5. Conclusions**

In this study, the distribution pattern of hydrogeochemical characteristics at a contaminated site in Xinxiang was analyzed by combination of multivariate statistical analysis and hydrochemistry, and the following conclusions were drawn.


**Author Contributions:** Formal analysis, Y.C. and Q.Z.; investigation, Y.Z., Y.S., W.S. and Z.L.; writing-original draft preparation, W.C.; writing-review and editing, W.C. and Y.Z. (Co-first authors); supervision, Y.C. and Q.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research is funded by Science and Technology Research Project of Henan Provincial Department of Natural Resources (Yu Natural Resources Letter [2019] No. 373-8); National Key R&DProgram of China (No. 2019YFC1804801).

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

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Data is contained within the article.

**Acknowledgments:** We sincerely thank the reviewers for useful comments and suggestions.

**Conflicts of Interest:** The authors declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.
