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On-site disposal systems, including septic tanks and cesspools, provide an effective means of treating household sewage. However, older, poorly designed systems, inadequate maintenance and many other conditions can affect the performance of such systems. Ineffective septage treatment can threaten the environment by polluting local wetlands and groundwater supplies; moreover, failing systems can harm public health by exposing residents to harmful microorganisms carried in wastewater.

For these reasons the health division implemented a comprehensive septic management program in1996. This program includes:

Database of Septic Systems / Cesspools in Lexington

Click here for list

System Pumping Requirements

All subsurface disposal systems must be pumped whenever necessary to ensure proper functioning of the system.  Local Lexington health regulations require that cesspools be pumped annually and that all leach fields be pumped every three years.  Pumping records must be sent to the Health Department for record keeping.  Septic system pumping must be done by a licensed waste hauler.  Click on the link for a list of current waste haulers licensed by the Health Department: 2005 Septage Haulers List

System Inspections and Requirements

All subsurface disposal systems must be inspected by a State-licensed inspector whenever real estate is sold to ensure that the system is functioning properly.

If there is a change in use, i.e., a single family residence is converted to a shelter or to a business. In such cases, the inspection is necessary to ensure that the system is adequate for the new use.

A building is added onto or modified (e.g., a bedroom or bathroom is attached). A Title Five inspection is carried out to make sure the system will handle increased usage, and to ensure that no part of the system will be covered by a change in the building's footprint.

If the subsurface disposal system fails an inspection, the owner normally has up to two years in which to correct the problem. However, the Board of Health may require that the owner address the problem within a shorter period should the failing system present a threat to the public health and the environment. If the property is sold, the new owner assumes responsibility for the failed septic system. The new owner may make an agreement with the town to connect to the municipal sewer system after taking ownership.

Yes. Title Five requires that owners of septic systems meet the standard of "maximum feasible compliance" with the requirements of the State Code. The level of compliance that may be met--that is, whether the system is simply repaired, replaced, or the home connected to the sewer--will depend on the characteristics of the property involved and the availability of the sewer. Local Lexington health regulations, however, require that if the sewer is available, the homeowner must connect to the municipal sewer system.

If the sewer is not available near the home, the homeowner must apply to the Board of Health for a variance and provide for approval by the Board of Health a design for a new system that meets the requirements of Title Five. Alternative systems to those specified in the state code must also be approved by the Board of Health.

No. Individual homeowners must hire their own licensed inspector.

Additional Information:

Homeowner's Guide to Septic Systems/Cesspools (Powerpoint Presentation)

Frequently Asked Questions

Title V: State Environmental Code

List of Soil Evaluators listed by Town

List of Title V Septic System Inspectors listed by Town

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