Use the Outline button on the WAVE toolbar to see if the web page has a halfway decent, logical heading structure. I was pleased to see that each of the 130 sites used HTML headings, but several sites had heading creep. Screen reader users benefit tremendously from good heading structure, but if a web page has too many headings, this offsets the benefits, and some of these sites have several dozen headings. If everything is a heading, nothing is a heading.
You can test specific themes for compliance with these guidelines using a tool such as the WAVE Web Accessibility tool.  For sites that require 100% compliance, we recommend testing your theme of choice using the demo page for the theme, for example Twenty Fourteen. We also recommend using Header Text (displaying the Site Title), rather than a Header Image, as some themes will not provide AltText and therefore generate an error in the accessibility tool when a Header Image is set.
We not only referenced the ADA’s requirements while building the website, but also sat down one-on-one with users who are blind to see how they navigated the site. These individual sessions were invaluable and provided more insights than just the law’s basic requirements. Instead of making assumptions about how these users would interact with the site, we took the time to observe their real interactions and used that data to formulate new features.
While the U.S. Department of Labor's (DOL) Office of Disability Employment Policy (ODEP) does not enforce the ADA, it does offer publications and other technical assistance on the basic requirements of the law, including covered employers’ obligation to provide reasonable accommodations to qualified job applicants and employees with disabilities. For a quick overview of the ADA read “The Americans with Disabilities Act: A Brief Overview.”

The Federal Communications Commission (FCC) enforces regulations covering telecommunication services. Title IV of the ADA covers telephone and television access for people with hearing and speech disabilities. It requires telephone and Internet companies to provide a nationwide system of telecommunications relay services that allow people with hearing and speech disabilities to communicate over the telephone.