if it's not clear.. it's polluted
if it tastes weird...it's polluted
if there are dead things in it...it's polluted
if you feel sick afterwards...it's polluted
if it STANKS...it's polluted
The neutrino.
They are detected by chemical methods of analysis as spectrophotometry, ion specific electrodes, titrimetry, etc.
When cobalt II chloride paper turns pink, this means that it has detected water. :-)
Water is tasteless because it does not contain any flavor compounds that can be detected by our taste buds.
Submarines will retreat to the depths if they are detected by radar. Note that radar can only detect a submarine if they are on the surface or if they have a mast or periscope sticking up out of the water. Radar has a terrible time trying to penetrate water, so if a submarine is detected because something is sticking up out of the water, the submarine will submerge to get some depth. Radar can't detect it down there. Also, the submarine will be trying to get out of the area and become "lost" in the ocean where it cannot be detected or located.
Diver can be detected by the air bubble they give off if NOT using a closed circuit rebrether. Additionally they can be detected with sonar as well as a hand held depth sonar type detector but at a limited range.
You can not drink enough.
As strange as it may seem, yes water has been detected on the Sun. Actually what was detected is 'steam' over a particularly cool sunspot where the temperatures were only about 1000 K or so.....
brain
Yes, leaks in water pipes can be detected using methods like pressure testing, infrared technology, or acoustic listening devices. Once a leak is detected, it can be fixed by repairing or replacing the damaged section of the pipe.
They can be seen using a microscope if its not small viruses, and otherwise there is no way to detect it.
In AL CAP heavy fuel oil separators, water presence in clean oil is typically detected using a combination of level sensors and water detection probes. These sensors identify the density differences between oil and water, triggering alarms when water is present. Once water is detected, it is automatically drained from the separator through a dedicated outlet valve, ensuring that only clean oil is maintained for further processing or storage. This automated system helps prevent contamination and ensures compliance with operational standards.