I just had my sprinkler system winterization completed. We have lived in our home for two winters so this is the second time we have had this performed. Both times after the water to the sprinkler system is turned off we have next to no cold water in our basement bathroom. It takes forever for the toilet to fill and there is hardly any cold water that comes out of the sink. What could the problem be and how can I fix it? Before the winterization I told the guy from the lawn service about the issue. He did not think that having the sprinkler system blown out would have any effect but unfortunately it does. Additional facts - our home is 6 years old and the sprinkler system was installed before the basement was finished.