What does the County Treasurer certify by signing the plat?

The certification by the County Treasurer when signing a plat primarily indicates that all property taxes on the land being platted have been paid. This is a key requirement because it ensures that there are no outstanding tax obligations associated with the property, which could affect future ownership or development. A signed plat that has this certification signifies to potential buyers, developers, and the county government that there are no financial encumbrances related to taxes for the property in question.

The other options may relate to various aspects of land surveying and property law, but they do not specifically pertain to the County Treasurer's role in the certification process. State regulations and survey approvals are typically the responsibilities of planning departments and surveyors, while establishing a property’s freedom from liens often falls under the purview of title companies or legal entities rather than the Treasurer's office.