ASLA Opposes Flawed Revision of the Definition of "Waters of the United States"

ASLA submitted comments opposing the EPA and Army Corps of Engineers' proposed revision to the definition of the WOTUS rule


The American Society of Landscape Architects (ASLA) submitted comments opposing the Environmental Protection Agency and Army Corps of Engineers' proposed revision to the definition of the Waters of the United States (WOTUS) rule.

The new definition defies well-established science, undermining the tenets of the Clean Water Act and putting families and communities at risk from pollution.

  • It disregards wetlands and waters joined through subterraneous networks.
  • It discounts wetlands separated from other bodies of water by man-made barriers, such as dikes and levees.
  • It excludes groundwater, drainage ditches, irrigation canals, artificial lakes and ponds, mining or construction depressions, stormwater runoff diversions and control features, and wastewater facilities.
  • It excludes ephemeral streams, a problem especially in the arid west.
  • This proposed rule could have long-lasting and far-reaching impacts on the health, safety, and welfare of many communities nationwide.

Read the full comments submitted to the EPA.

For questions, please contact Jacquelyn Bianchini, Media Relations and Public Awareness Manager at the American Society of Landscape Architects, at or (202) 216-2371.


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