Which statement accurately describes sodium carbonate peroxyhydrate?

The statement that sodium carbonate peroxyhydrate is completely biodegradable except for drinking water applications accurately reflects the properties of this compound. Sodium carbonate peroxyhydrate is known for its environmental safety as it breaks down into non-toxic byproducts, primarily oxygen and water, making it a more eco-friendly option for aquatic pest control.

When used in non-drinking water applications, it can effectively target unwanted algae and microorganisms without leaving harmful residues. However, special considerations are required when it comes to drinking water applications, as the presence of contaminants or residues, however minimal, may pose risks to human health.

Overall, its biodegradable nature is a significant advantage, particularly in aquatic environments, where maintaining ecosystem balance is crucial, and its use must be regulated in contexts like drinking water to ensure safety.