Hillary Clinton poses for a photograph with church nurses after a community meeting at the House of Prayer Missionary Church in Flint, Mich,, on Feb. 7. (Jeff Kowalsky/Bloomberg News)

Hillary Clinton's presidential campaign is touting her advocacy for residents of Flint, Mich., with a new video and announcement Monday that three ministers in the majority-black city are endorsing her because of the attention she has brought to an ongoing water crisis.

The campaign video features Flint residents, all of them African American, talking about how the city's poisoned water makes it hard to drink and bathe. The water was contaminated after a cost-saving decision to switch the city's water supply to river water that contained lead and other contaminants.

The Clinton campaign released testimonials from African American ministers who said they are grateful for Clinton's frequent mentions of the city over the past month and her visit there on Feb. 7.

Clinton has said the water crisis would not have happened or been allowed to fester in a wealthier, whiter city, and she blamed the state's Republican leadership for not acting more quickly. She takes credit for pushing the governor to accept federal help and now says Congress should act to provide millions to restore safe water and deal with health effects.

"Secretary Clinton has certainly aided us in bringing added political attention to our plight in the city of Flint, causing other politicians to move legislation on this subject, and vowing to do everything within her power to assist Flint in recovering from this sinful social experiment," the Rev. Hubert Miller said in a statement released by the Clinton campaign.

The Rev. Al Harris and Bishop Rogers L. Jones Sr. also endorsed Clinton, saying she is the only presidential candidate to travel to Flint and the first to highlight the problem.

The water crisis has become a focus of liberal outrage and a symbol of racial inequity just as the Democratic political contest moves toward southern and Midwestern states with sizable black populations. Democratic rival Sen. Bernie Sanders (Vt.) also has  mentioned the case and will campaign in Michigan on Monday.