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To ensure maximum protection of your water quality, EDP offers a variety of watertight, tamper proof locking well caps.  

In addition to offering maximum security, our range of locking well caps have a durable design for the harshest environments. They are easy to install and cost efficient while maintaining watertight integrity.   

In the case of landfill gas sampling, our J-Plug Vapor Ex-cap is a perfectly suited self sealing vapour sampling cap. It operates as a watertight locking expansion plug capable of having vapour or water extracted through the cap without having to remove the cap from the well.