Yeast Starter with Tap Water

I usually brew using my tap water after running it through a filter and using campden tablet. My first yeast starter (for a Kolsch) is going right now and it just hit me I forgot to add a bit of campden pre boil. Will this cause issues even if I plan on decanting most of the liquid prior to pitching on brew day? Mr. Malty calculated a 1.5L starter. I would rather start over and buy new yeast if it might affect the final product down the line.

I have chloramine in my water and always use campden for brewing but I never bother with my starters. Never had an issue.

After decanting, few hundred milliliters of tap water in your starter won't have a noticeable impact on 5 gallons of beer. I wouldn't worry about it.

Thanks for the responses. I figured it wouldn't be a major issue, just never dealt with a starter before. Looking forward to this one. Thanks!