Do not use any water that has ANY TDS reading. 24-25 is super low but you don't know what makes up the 24-25. The good news is your RO/DI is going to last a loooooooong time!
right out of the faucet, 22 tds in Milpitas. My RODI only contains 1 sediment filter and 1 carbon filter plus DI canister. I replace the cartridges once every 1.5-2 years and the first DI I replaced after 5 years.
Don't count on it staying there. I lived around Jacklyn and Park Victoria for a while, TDS swing from 60 one week to 200 the next. It depends on where water is coming from at the time.
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