What exactly is against their religious belief? Dumping their sewage on other people’s property? Or are they being told to install an electric toilet?
This doesn’t sound like a representative Amish person to me.
I was thinking that there might be more to this also. In Texas, we have been under attack for about a decade now. There is almost no land that I know of that you can buy here now that will pass the "perc" test. People pay much extra for a "grandfathered" septic system. All raw lands with no septic must have the new aerobic systems. It seems the perc tests always fail, the inspector is always the brother in law of the guy that inspects the aerobic systems every year for $300, and the installer is somebodies cousin. If you try to fight it, they always start to accuse you of fouling the groundwater. If you have 20 acres and your well is 400 ft from the septic, that just doesn't seem good enough. Used to be the well would be just a few yards from the septic and that was ok for 200 years, now they start talking of fouling water tables miles away.
It's about money and control, not pollution.