I mean, you could probably put a short version of your title like "How Polluted Are Our Waterways", but you should have a tighter title that's not a question like "Our Polluted Waterways and the Threat They Pose".
In 2015, I had a part time job managing some parts of my University's IT. We still had 2 Sparc64 build servers that were like 15 years old and had a dual socket MB with 2 physical CPUs and 2 GB of RAM. Top of the line when it came out. It took like 10 seconds for ls to run. Most infra had moved to x86_64 CentOS machines (from Sun Microsystems still, so like 10 years old), but we were still routinely building updated dovecot packages for the Sparc64 machines managing internal email.
I agree. It's supposed to be the title, not an article. 🙂 Posing it as a question does help to pique interest, though. Could do... "Are polluted waterways a major threat?" Boom. Done.