If you use outside resources for your web needs, or have a dedicated web person or company, call them immediately. If you have a department or staff, even better. But— if you are working on your own, you would do yourself and your business a favor to contact a reputable web developer to discuss how to make your site accessible and avoid possible lawsuits. The older your website, the more likely it is that it is NOT compliant. Take action now!
Yes, as of 2018 websites absolutely must be ADA compliant. Its a new but very scary issue that has flared up over the last year and is set to cause a LOT of turmoil. The Supreme court issued a judgement that opened up a loophole and opportunity-chasing lawyers are aggressively soliciting handicapped people and convincing them to sue unsuspecting website owners (pretty much every website owner on the planet, as not a single one of us were ADA compliant before now.)
The ADA’s relationship with websites has been a complicated and often confusing story. The ADA does not explicitly address online compliance, even after undergoing several amendments in the far more web-oriented era of 2008. With no specific coverage under the law, it usually falls to the courts to determine how ADA standards apply to websites—or whether they do at all.
Courts have essentially taken three positions when approached with this issue. Some courts take the position that the ADA applies to all commercial sites because the law was meant to protect disabled individuals from having a more difficult time than able-bodied individuals from doing business. That is why the website Scribd was unable to get a case summarily dismissed and ended up settling.