How many times have governments touted their own programs as successful and not been quite right? Are you really that easy to propagandize?
I don’t know. Maybe 2 or 3 times in human history. Is being wrong about one thing mean you are wrong about everything?
I urge you to look a little deeper and use logic.
I also urge you to the same. You can start by looking at the multiple studies backing up this practice and learning about the logical fallacy of circumstantial ad hominem.
It’s not easy for governments and large companies to put out press releases and bad studies to support their position.
Umm ok
It’s never good to add neurotoxins to tap water
Different dosages different impacts. Water can kill you if you drank enough.
where dosage is impossible to control
Metering pumps are typically what I have seen and used. Pretty easy to control. Basic steps are
If pump is on observe 4-20mA signal from the sensor. Which is usually looped powered 2-wire. If it is too low, then signal contactor to the metering pump while observing. Usually I have done a simple latch circuit with a blackout period for this. Basically the water fluoride live between two control points, a high and a low. Once high is achieved the metering pump is cut off from power. Over time the main pump brings enough new water in that the levelsof fluoride fall to the lower point. At which point the contactor goes in and the metering pump goes on again.
Since you don’t want to add it to still water (you never add a base or acid to still water if you want accurate application) you put the main pump(s) as the interlock. If you are wondering why I don’t use a PID for control on this is because I can’t find a metering pump with large range speed control to make it worth it.
The blackout zones are for sensor problems. Usually a simple rule like “if metering pump has been on and is now off wait three minutes before turning it on again regardless of what sensor says”. It is far easier to go over vs go under so try to bias it one way vs the other.
I guess AMA if you want to know more about this stuff. Been in automation and control for 15 years now.
and the water is used for far more than tooth care.
That’s nice.
Is there no concern about toxic substances building up in the soils in our farms and gardens? What about wildlife that has to deal with our drugged water?
Sure bioaccumulation. Go to the EPA or your state’s DEP and ask them about the research they have done on it. Lots of environmental chemists work researching this topic. It’s a bit anecdotal but every WWTP I have been too, which presumably would have the most of the fluoride, has pretty abundant wildlife. Turns out feces and water makes plants happy.