Guidance Issued on Residential Water Well Methane Reduction
Proper construction and regular maintenance are important to reducing risks to groundwater
The National Ground Water Assn. (NGWA) issued a new best suggested practice (BSP) for dealing with methane gas in residential water well systems.
Intended to give guidance to water well system professionals, "Reduce and Mitigate Problematic Concentrations of Methane in Residential Water Well Systems," also may be of value to well owners, though professional assistance is strongly encouraged due to health and safety concerns.
NGWA's new BSP includes:
- Information on the occurrence and geological implications of methane;
- Methodologies for well construction;
- Well operation considerations;
- Analysis methods for detecting methane in groundwater;
- Procedures to mitigate the presence of methane; and
- Health and safety information relating to methane.
The document states that proper construction and regular maintenance of water wells are important to reducing risks to groundwater and protecting public health. If there are concerns about the presence of methane in a residential water well, the water supply should be tested. Testing should be performed by a certified drinking water testing laboratory.
This BSP was developed by a work group of NGWA member professionals drawing from extensive experience and referenced research. Available as a PDF, it can be downloaded through the NGWA online bookstore. While free to NGWA members, there is a nominal charge to nonmembers.