As of 2023 only two states have banned TCE (Minnesota and New York), and the federal government has yet to do anything to control it. It has and will continue to be used extensively in industrial application such as at electronic assembly lines, dry-cleaners, mechanics, air force bases, coffee decaffeination, textile industry, and the list goes on. The best you can do is live in a highly residential area which is far from the locations where any of these business could operate.
The reinstatement of the excise tax in 2022 may actually be harmful to its own environment. It's an import tax on crude oil, which will encourage the domestic oil industry leading to an importing of pollution.
https://twitter.com/realEstateTrent/status/14378028033139220...
Here's one example in Santa Clara of a dry cleaner that operated in the 60's and there has been an active remediation project to cleanup the groundwater that has been on-going to this day [1]. In this case a single dry-cleaner which operated decades ago contaminated the water table and the chemicals flowed to neighborhoods even across the street. There is an extensive record of cleanup actions being taken on a nearly monthly basis going years back, including continuous well monitoring and soil vapor intrusion investigation. The map that was sent out to residents shows the extent of how far the ground water plume reaches, it's stunning to see how far one spill can go depending on the water table [2].
There are open remediation cases like this in almost every strip mall across America. This is a widespread problem and most people just aren't aware of the extent of it.
[1] https://geotracker.waterboards.ca.gov/profile_report?global_...
[2] https://documents.geotracker.waterboards.ca.gov/regulators/d...
If you’re in a house, the same mitigations for radon exposure would likely work to reduce TCE as well.
Regularly ventilating your home may also help keep the levels down.
Lastly, there are typically many years of exposure required before you notice any symptoms. So moving would be another viable option.
Take a look at where you live on the California waterboard website [2] and look for nearby groundwater contamination sites. TCE / PCE contamination sites anywhere near your residence or workplace would put you at risk of getting Parkinsons. I know someone who got it and indeed they lived near a dry-cleaner that was leaching TCE into the groundwater decades ago. The solvent entires your residence through vapor intrusion, especially on the first floor or basement.
[1] https://www.urmc.rochester.edu/news/story/common-dry-cleanin...
[2] https://geotracker.waterboards.ca.gov/map/?CMD=runreport&mya...