What Homeowners Should Know Before Installing a New Septic System
Installing a new septic system is a major step for any homeowner, and careful planning at the beginning can help prevent costly issues later. Understanding how the system works, what affects installation, and how to maintain it can make the process much easier and less intimidating.
How a Septic System Works
A septic system is used when a property is not connected to a municipal sewer. Wastewater from the home flows into a septic tank, where solids settle to the bottom and oils and grease rise to the top. The remaining liquid then moves into a drain field, where it is naturally filtered through soil. This process allows wastewater to be treated safely on-site when properly designed and installed.
Site Evaluation and Soil Testing
Before installation, the property must be evaluated to determine if it can support a septic system. A soil test, often called a perc test, measures how quickly water drains through the ground. Soil type, groundwater level, slope of the land, and distance from wells or water sources all influence system design. Local and state regulations also play a major role in what type of system can be installed and where it can be placed. For NH regulations, more information can be found through the New Hampshire Department of Environmental Services. In NH you will want to start by finding a NH licensed septic designer. For MA residents, information is offered by the Massachusetts Department of Environmental Protection. In MA you will want to start by involving your local Board of Health and a licensed Title V inspector or engineer.
Choosing the Right Septic Tank
Homeowners typically choose between concrete, plastic, and fiberglass tanks. Precast concrete septic tanks are commonly preferred as they are strong, long-lasting, and resistant to shifting soil conditions. Precast tanks perform well in cold climates and are less likely to float in areas with high groundwater, making them a dependable option for many properties.
Installation Costs and Considerations
Septic tank size is usually determined by the number of bedrooms in a home and expected water usage. A system that is too small can lead to backups and premature failure, while an oversized system may add unnecessary cost. Local building codes establish minimum sizing requirements that must be followed during installation.
The total cost of a septic system can vary depending on excavation difficulty, soil conditions, leach field size, permits, and material selection. Most modern septic tanks have one or two compartments that help separate and treat wastewater more effectively before it reaches the drain field. In a two-compartment tank, solids settle in the first chamber while additional settling occurs in the second, which reduces solids leaving the tank and helps protect the drain field. Precast concrete tanks are often built with internal baffles or dividers to create these compartments and improve overall system performance and durability.
Maintenance After Installation
Once installed, regular maintenance is essential for long-term performance. Most septic tanks should be pumped every 3 to 5 years. Homeowners should also avoid flushing grease, wipes, or other non-biodegradable materials. Protecting the drain field and conserving water can further extend the life of the system.
Final Thoughts
With proper planning, the right materials, and routine maintenance, a septic system can provide reliable wastewater treatment for many years. Working with experienced professionals helps ensure the system is designed correctly for the property and local conditions.
For more information on septic tanks, give us a call or send us an email and we would be happy to help. We would love to help with your building needs, from production to delivery.
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