Disclaimer
Important Notice
The Septic Tank Size Calculator provides ESTIMATES ONLY. All calculations are based on general guidelines and typical state requirements. This tool does NOT replace professional site evaluation, engineering design, or official permits required for septic system installation.
Estimates Only - Not Professional Advice
The septic tank sizes, drainfield dimensions, and cost estimates provided by this calculator are approximations based on general state guidelines and industry standards. These estimates:
- Are not engineering designs and cannot be used for permit applications or construction
- Do not account for site-specific conditions such as actual soil percolation rates, water table depth, slope, or setback requirements
- May not reflect current local codes as regulations change frequently and local requirements often exceed state minimums
- Should never replace professional consultation with licensed septic designers, engineers, or installers
Professional Services Required
Before installing or modifying any septic system, you MUST:
1. Obtain Professional Site Evaluation
A licensed professional must evaluate your property including soil testing, topography, and site constraints.
2. Conduct Percolation Test
An official perc test determines your actual soil absorption rate, which directly affects drainfield size requirements.
3. Get Licensed System Design
A licensed designer or engineer must create plans that meet all local, county, and state requirements.
4. Obtain Required Permits
Your local health department must approve the design and issue permits before any work begins.
Limitations of Calculator Estimates
Our calculator cannot account for many factors that affect actual system requirements, including:
- Actual soil conditions on your property
- Depth to groundwater or bedrock
- Property slope and drainage patterns
- Required setbacks from wells, property lines, and structures
- Local environmental restrictions or protected areas
- Historical or archaeological site considerations
- Flood zone or coastal area regulations
- County or municipal codes that exceed state requirements
No Warranty or Guarantee
This calculator is provided "as is" without any warranties, express or implied. We do not guarantee the accuracy, completeness, or usefulness of any information provided. We are not responsible for any decisions, actions, or outcomes resulting from the use of this calculator.
Liability Limitation
Under no circumstances shall Septic Tank Size Calculator, its operators, or contributors be liable for any direct, indirect, incidental, consequential, special, or exemplary damages arising from the use of this calculator, including but not limited to:
- Failed permit applications
- Incorrectly sized septic systems
- System failures or malfunctions
- Property damage
- Environmental contamination
- Health or safety issues
- Financial losses of any kind
Your Responsibility
By using this calculator, you acknowledge and agree that:
- You understand this is an estimation tool only
- You will consult licensed professionals before making any decisions
- You will obtain all required permits and approvals
- You assume all risks associated with using this information
- You will verify all information with local authorities
Need Professional Help?
For actual septic system design and installation, contact your local health department or use our state directory to find the appropriate regulatory agency.