Water Chemistry

My incoming TDS is high. Extremely high. 750+ high. That being said my 4-stage does a very good job of getting it down. Usually averaging less than 30, sometimes 20. Well below the 5% accepted return. That's great for drinking water, but 20-30 TDS entering my DI is literally just exhausted a 10" BRS "Nuclear Grade" resin refill within 200 gallons. I am running this filter array:

5 Micron Purtrex sediment filter

5 Micron Matrikx+CTO/2

Carbon Block
1 Micron

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