For those of you who have suspect PPMs out the tap and want to figure out its composition without paying for it…
I just went to Petsmart and they offer a complete water analysis for free, usually meant for aquarium enthusiasts but thought it would be perfect for our needs here. My PPMs out the tap are about 150 but would still like to know what the make up is. They said I can even bring the water in a ziploc bag for them to test! 
That’s a pretty cool life hack lol. Tina of pet enthusiasts here! Ty for sharing!
That wouldn’t happen in metric cuz its tonnes thats why we do that
For you
So alot of places do free water testing like Home depot for example.
I know useing Home depot will result in you’re information going to high pressure sales people that try to sale you a ridiculously over prices RO filtration systems.
Don’t ask me how I know 
I ask AI about petsmart and this was the response.
"PetSmart offers free tap water testing for aquarium owners to check for common issues like pH, ammonia, nitrites, and nitrates. Here are some potential downsides to consider:
Basic Testing Only – Their tests are typically limited to parameters relevant to fish health, so they won’t check for contaminants like lead, chlorine, heavy metals, or bacteria that could affect human consumption.
Potential Upselling – Employees may suggest products like water conditioners, filters, or other treatments based on your results. However, this is usually more focused on aquarium needs rather than home drinking water.
Privacy Concerns – PetSmart does collect customer information through its rewards program and transactions, but there’s no strong evidence that they sell water test data specifically to third-party companies. If you’re concerned, you can ask them directly about their data policies or provide minimal personal details."
It’s still worth doing, just be aware some one may try and sale you a water filter down the road and there test maynot test for everything that can effect plant growth as it’s gear twards fish habit…
As mentioned above, they will probably only do ammonia, nitrite, nitrate and pH. The ammonia, nitrite and nitrate are all forms of nitrogen and the testing won’t include things like phosphorus, potassium, calcium, magnesium, iron, or other trace elements.
Most pet shops use a paper or liquid test kit and these usually only go up to 5-10ppm for ammonia and nitrite, and 100ppm for nitrate. Converting this to something useful for plants is the hard part.
You can buy test kits (from pet shops or online) for calcium, oxygen, iron, copper and other things but you will probably need to have them ordered in for you. Then check the expiry date because they aren’t big sellers and you could get old stock that has been sitting around. Test kits last longest when kept in a cool dark dry place (eg: in a plastic icecream container with a lid on the bottom shelf in the fridge).