The Planted Tank Forum - View Single Post - High nitrate tap water
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Old 04-06-2013, 03:57 AM   #18
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45 ppm is not OK.

EPA sets a maximum allowable level of 10 ppm. This is an enforceable level, so do not accept the idea that 45 ppm is OK. The water company is not allowed to have that level in their finished product.
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