Wet weather window
The Department of Environmental Health (DEH) oversees wet weather groundwater investigations to verify adequate separation between the bottom of a dispersal field and seasonal high groundwater.
The wet weather window will open for a 30-day period when at least 60% of historical seasonal average rainfall has occurred, and 14% of that average has occurred in the last 30 days. The window will be extended for two-week periods provided that at the end of each testing period, at least 14% of historical seasonal average rainfall has occurred in the previous 30 days.
The following table will be updated periodically in the event that a wet weather window is opened:
| Region | Status | Start Date | End Date |
|---|---|---|---|
| North County | Closed | 02-20-2025 | 04-18-2025 |
| South County | Closed | 03-13-2025 | 04-25-2025 |
| East Valley | Closed | 02-20-2025 | 04-18-2025 |
| West Valley | Closed | 02-20-2025 | 04-18-2025 |
Click here for Wet Weather Region search by APN
Click here for Wet Weather Region search by Address
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