Storm Water Systems

The ENV 21 V2B1 is the flagship of Environment 21.

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Its unique standard pre-cast concrete two manhole design allows it to help you meet the EPA goal of 80% TSS removal efficiency. The inlet manhole has a tangential mounted inlet pipe that creates a swirl flow pattern, which improves flow distribution and reduces turbulence, thus enhancing sedimentation settling.  Proper sizing essentially offers a complete removal of sandy sediment. The ENV 21 “Center Withdrawal Elbow Pipe” conveys flow to the outlet manhole where floatable debris is retained by using an underflow baffle. And, as with all Environment 21 products, maintenance is a cinch with access openings to all stages and a clear view to the sump. Our Storm Water Systems ideal for unique site scenarios with other utilities.



  • About Miller…

    Miller pursues the mission to provide cost effective and lasting precast concrete building solutions, either in the agricultural, commercial or residential market.
  • Where to find us

    58 Cooper Road
    Rosslyn, ON
    P7K 0E3
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    Hours of Operation
    Mon - Fri 8:00am - 4:30pm
    Closed Weekends

  • (807) 939-2655

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