The district may generate monies for the benefit of the district by any of the following:

1. 1. The transaction privilege tax levied pursuant to section 48-6432.
2. 2. The sale of water or water rights that are owned by the district.
3. 3. User fees for services provided by the district and that are agreed to by those users.
4. 4. Revenue bonds sold by and debt repaid to the district.
5. 5. The receipt of gifts, grants and donations received from any public or private source.