Among the details released in documents today, after the meeting with Treasury officials and at the onset of the financial crisis, Waters allegedly approached House Financial Services Committee chairman Rep. Barney Frank, D-Mass., to confess her husband's association with OneUnited. Frank reportedly did not know that Waters held stock there and told her "not to get involved."
Frank, however, assured Waters that he would handle the business with OneUnited.
But, the committee said, Waters failed to instruct her chief of staff to stay out of the negotiations and Moore continued corresponding with Frank's staffers.
"Once [Waters] realized that she 'should not be involved' in assisting OneUnited, [Waters] should have instructed her Chief of Staff ... to refrain from assisting OneUnited," the statement said.
The committee announced Aug. 2 that an investigative subcommittee found reason to believe Waters had broken House rules and she would face an ethics trial. Waters appealed to have the charges dismissed, but her motion was denied.
"I have not violated any House rules," Waters said in a statement. "Therefore, I simply will not be forced to admit to something I did not do and instead have chosen to respond to charges made by the House Committee on Standards of Official Conduct in a public hearing."
Waters said she was merely "advocating on behalf of minority banks," never concealed her interests in OneUnited and did not benefit or act improperly in any way.
"In sum, the case against me has no merit," Waters said. "No benefit, no improper action, no failure to disclose, no one influenced: no case."
The charges come at a bad time for House Democrats as they hope to hold on to their majority in the midterm elections this November. Waters was the second House Democrat to face ethics violations charges during July.
Last month, the ethics committee charged former House Ways and Means committee chairman Charles Rangel with 13 ethics violations. Unless Rangel's lawyers can cut a deal, the New York Democrat is expected to go on trial in September when the House convenes after Labor Day.
No date has been announced for Waters' trial, but it is also expected to occur before the voters head to the polls this fall.
Read the full report on Waters' ethics charges here.
ABC's Matthew Jaffe and Dean Norland contributed to this report