H.R. 6869 modifies the 2010 Aamodt Litigation Settlement Act, which resolved a long-standing water rights dispute involving Native American pueblos in New Mexico. The bill gives water project partners—including five pueblos, the federal government, New Mexico state, and local governments in Santa Fe County—more flexibility to extend deadlines for completing the Regional Water System without penalty. Specifically, it allows these parties to jointly agree to extend project completion dates if they determine an extension is reasonably necessary, rather than being locked into fixed timelines. The bill affects water infrastructure development in the Santa Fe area and the tribal, state, and local governments involved in the settlement agreement, though no new federal funding is specified in the text provided.