Properties with water wells may need the dry weather well testing. It is required when building a new or replacement dwelling in scarce water zone four, when building an accessory dwelling unit in marginal water zone three, or as required by Permit Sonoma staff to comply with Health and Safety Conditions.
WLS-011 Disinfecting Wells
Map of well and septic environmental health districts within Sonoma County.
We're looking for qualified Land Use Health Specialists.