Periodically I will get brown water in the house in the toilet and faucets, I was told that the membrain in the tank is going bad and could cause this is this true? I also see dirty water in the dishwasher,

Are you on a well or city water?
Pull a aerator from a faucet that produces brown waterand check the sceens. What does it look like?
Is there soil or gritty dirt?

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I was told that the I was told that the membrain in the tank is going badmembrain in the tank is going bad

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What tank do you mean? This could be dirt if you're on a well or could be resin in you line from the softener. Have you bypassed the softener, removed the aerators and flushed the lines? Back to you, Tom