Quoting HopingforaMiracle:" <blockquote><b>Quoting Reise's Mommy:</b>" They make juice especially for babies that's ... [snip!] ... give too much water. If it is affecting the amount she is drinking milk and eating it is too much. And there is water toxicity"
That's why I said as long as she was still getting the amount of milk she needed. I just know my son's doctor says it's very rare that a child will want to drink enough water to hurt themselves. We asked about it and he said he didn't need it but if he wanted it there was no issue giving him some as long as it wasn't replacing any of his milk consumption.