Environmental Health Services | Monona County Offices
610 Iowa Avenue, Onawa, IA 51040
Monona County Offices
Eligibility
Open to anyone
Required documents
Varies by service
Hours
Mon-Fri 8 am-4:30 pm
(712) 433-3400
Voice·
Main Phone
Application process
Call for information
Fees
Varies by service
Service area
Monona County, IA
Environmental services for permits for private wells and septic systems, and testing drinking water.
Last Assured
05/21/2026
Providing organization
Monona County Offices
County government offices.