How does water get under rear nearside astra g carpet?

Water can accumulate under the rear nearside carpet of an Astra G due to several factors, such as a faulty door seal, a blocked drainage channel, or a leaking window. Poorly sealed or damaged weatherstripping can allow rainwater to seep in, while clogged drainage systems can cause water to back up and seep into the interior. Additionally, condensation from the vehicle's air conditioning system or spills can contribute to moisture accumulation. Regular checks for leaks and proper maintenance can help prevent this issue.