Septic System Forms

Permits

New Construction permit: Minimal requirements include the completion of a Sewage Permit/Evaluation Application, Site Application Project plan, and Permission to Enter form.

The Site Application Project Plan: Certain information is critical to being able to evaluate a proposed onsite sewage system. These include,

  1. The source of drinking water supply,
  2. size of the parcel,
  3. type and use of building being constructed,
  4. location of existing and proposed utilities, and
  5. a dimensioned site plan showing proposed initial system, the reserve area, soil logs and other soil tests, general topography and/or slope, drainage characteristics including streams, ponds, and wetlands, and any existing or proposed easements or encumbrances.

A total of 3 test holes need to be excavated in the proposed primary and reserve drainfields to determine soil type - 2 test holes in the primary and 1 in the reserve area.

Learn about the requirements for test holes here.

Repair or Replacement: Minimal requirements include the completion of a Sewage Permit/Evaluation Application, Site Application Project Plan, and Permission to Enter form.

Soil Evaluation: Minimal requirements include the completion of a Sewage Permit/Evaluation Application, Site Application Project Plan, and Permission to Enter form. This permit is mainly utilized to determine the applicability of an on-site septic system without incurring the cost of a new permit.

Verification of an Existing System: This Permit Process is for evaluating an existing onsite system installed without a permit or where there is no record of a final inspection and approval): Minimal requirements include the completion of a Sewage Permit/Evaluation Application, Site Application Project Plan, and Permission to Enter form. This permit will evaluate the existence of a current system and determine the minimal functionality to serve the proposed buildings.

Operation and Maintenance (O&M): Minimal requirements include the completion of a Sewage Permit/Evaluation Application, septic tank pumper's reports for the last 5 years, and copies of your water use records for the last 12 months. Your water use records help to establish the most appropriate O&M schedule for your septic system.

Lewis County Code requires O&M permits for on-site systems serving most food establishments and for alternative onsite systems (i.e. Aerobic Treatment Units and certain proprietary treatment systems).

Connection/Reconnection: These Permits are required for connection or re-connection of homes or other buildings to existing permitted onsite systems installed more than one year prior to application for building permit or mobile home placement permit. Minimal requirements include the completion of a Sewage Permit/Evaluation Application, Site Application Project Plan, and Permission to Enter form.

Alteration: Minimal requirements include the completion of a Sewage Permit/Evaluation Application, Site Application Project Plan, and Permission to Enter form.

Forms
Lewis County Conventional septic system guidance
Septic Permit Application
Septic Permit Verification