Clermont County septic guide: permits, inspections, soils, sewer
Clermont County Public Health counts roughly 20,000 septic systems in the county, and every household system among them sits in its operation permit program. This page collects what applies to one of those systems in 2026: who inspects it and how often, what permits cost, where the records are, what the local soil does to a drain field, where public sewer runs, and where to look for repair money. It covers Milford, Goshen, the Clermont County side of Loveland, and the townships in between.
The county's septic rules are Board of Health Regulation 415, effective March 1, 2026, which applies Ohio Administrative Code 3701-29 locally. One change in that version matters to anyone who held the county's Acceptable Operation and Maintenance designation: the program ended on the rule's effective date, so an existing designation runs until the current operation permit expires, and the system then renews on the standard cycle for its type.
| Topic | What applies in Clermont County | Details |
|---|---|---|
| Inspection cycle | Every 12, 19, or 38 months (Regulation 415) | Discharging systems under an Ohio EPA NPDES permit are assessed and sampled every 12 months, systems with electrical components every 19, and all others every 38. Staff work township by township and mail a postcard about 90 days before reaching your area. |
| What the inspector checks | Surface sewage first, then every component | Sewage or gray water on the ground, the tank location, electrical components run where possible, lids and risers for structural integrity, and the baffles when they can be seen. Inspectors carry photo ID, drive marked white vehicles, and leave a door hanger if no one answers. |
| Operation permit fees | $52 routine inspection, $57 reinspection | Effective January 1, 2026. A failing system is charged the operation permit fee plus a fee for each return visit until it is corrected. |
| When a system fails | 30 days to correct, then a Notice of Violation | The correction window can vary with the violation. A missed deadline brings a Notice of Violation by certified mail with another 30 days, and after that the case goes to the Board of Health. |
| Repair and replacement permits | Site review $600, installation $674, alteration $335 | The installation permit includes the $74 state fee. Remediation permit $635; reinspection during work $75; installer and service provider registration $125. Work begun without a permit adds 25 percent. Extensive repairs need an alteration or replacement permit. |
| Records | Online septic inspection search | One database covers inspections through December 31, 2018; the customer self-service portal covers January 1, 2019 onward. |
| Buying or selling | Homeowner-requested inspection, $200 | Buyers request it most often, and some lenders require one; there is no county point-of-sale mandate. The county warns that a vacant house or a dry-season inspection can make a marginal system look healthy. |
| Soils | Fragipans and perched water tables | The county soil survey, first published in 1975, uses Avonburg and Rossmoyne silt loams as its examples. USDA describes a Rossmoyne fragipan 18 to 30 inches down and an Avonburg perched water table 6 to 18 inches down in normal years. |
| Septage | No land application in the county | Regulation 415 does not permit land application of septage anywhere in Clermont County. |
| County sewer | Clermont County Water Resources Department | Runs the Clermont County Sewer District, including the Lower East Fork and Middle East Fork treatment plants. Its proposed five-year wastewater plan lists sewer petitions for Campbell Lane, Whitmer Road, and Old SR 74, O'Bannon trunk sewer work, and elimination of the Arrowhead treatment plant. |
| City of Milford sewer | Milford Wastewater Department | The city runs its own plant, rated for an average of 1.2 million gallons a day and a maximum of 3.24 million, with more than 30 miles of mains and 8 lift stations. |
| Help paying for a failed system | Septic System Rehabilitation Financing Program | Grants for owner-occupied single-family homes with a malfunctioning system: one replacement or one sewer connection per homeowner, and no fees owed to the district or delinquent taxes. Ohio EPA's 2026 plan lists $100,000 for the county; a household of one to four qualifies for 100, 85, or 50 percent coverage at incomes up to $33,000, $66,000, or $99,000. |
Is your road sewered? Neither agency publishes a simple list of unsewered streets. For a specific parcel, two lookups settle it: ask the Water Resources Department whether a sanitary main fronts the property, and search the Public Health database for the address. A septic inspection record means the house was on septic at the last visit.
Plan maintenance around the soil. On fragipan and perched-water soils, a drain field works hardest from late fall through spring. Pump on schedule, keep roof and sump water away from the field, and read any inspection result in light of the season it was taken. The county's own guidance is blunt: a field that is saturated in late summer or early autumn, the dry part of the year, is a bad sign.
For the permit line between a repair and a replacement, see our Ohio septic permit FAQ. For hands-on help, start with septic repair in Milford or a septic inspection in Goshen, and compare districts in our permits by county guide.
Data sources
- Clermont County Public Health: Septic systems and operation permits
- Clermont County Board of Health: Regulation 415, effective March 1, 2026
- Clermont County Public Health: Fee schedule
- Clermont County Public Health: Homeowner inspection requests
- Clermont Soil and Water Conservation District: Soil survey
- USDA NRCS: Rossmoyne series official soil description
- USDA NRCS: Avonburg series official soil description
- Clermont County Water Resources: Proposed five-year wastewater capital improvement plan
- City of Milford: Wastewater
- Clermont County Septic System Rehabilitation Financing Program Plan
- Ohio EPA: 2026 Water Pollution Control Loan Fund program management plan
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