Money talks. One powerful method for protecting our water (health, climate) is for individuals and organizations to move their money out of banks that fund pipelines.
Join the Divestment Movement. Its power comes from the collective will of the many.
If you are looking for information on how to do this,
Connect to the Defund DAPL or Mazaska Talks websites.
There you will find lists of offending banks and suggestions about alternative places to manage your money and accomplish good at the same time.