Yes I use 100% tap water. I wasn't sure if there was something to look for in my water report. Thanks for the advice. I can definitely throw some in since it won't hurt anything.
The thing to look for in a water report is the difference between total chlorine and free chlorine. If there is a difference, it's chloramine. You could also check with your water company to see if they use chlorine or chloramine to treat the water. They will usually tell you. That being said, 1/4 of a campden tablet per 5 gallons of water won't hurt your beer and will make it a non-issue.
Ok. My water report is very basic...
pH 7.7
Total Dissolved Solids (TDS) Est, ppm 143
Electrical Conductivity, mmho/cm 0.24
Cations / Anions, me/L 2.3 / 2.1
Sodium, Na 14
Potassium, K 1
Calcium, Ca 22
Magnesium, Mg 7
Total Hardness, CaCO3 84
Nitrate, NO3-N 0.1 (SAFE)
Sulfate, SO4-S 11
Chloride, Cl 16
Carbonate, CO3 < 1.0
Bicarbonate, HCO3 57
Total Alkalinity, CaCO3 47
"<" - Not Detected
It sounds like a very simple step yet it is another step, the night before nonetheless. Until I notice any problems, I may skip it for now. It is hard enough to find time to brew these days...