When it comes to reporting potholes, the responsibility falls to Hertfordshire County Council, as they manage road maintenance in the Welwyn Hatfield area. The typical response time for fixing reported potholes isn't specified in the available records, but generally, you can expect repair times to vary based on the severity of the issue and workload.
For clarity on reporting potholes and any compensation claims, you can reach out directly to Hertfordshire County Council. Here's the link to their website for reporting issues or making claims: Report Potholes or Claims.