Project advice on wifi temp and water sensor

I would like to make a WiFi enabled water and temp sensor that will send an email, or SMS if a threshold is reached. I am not positive that I have selected the correct parts for this project, or if I have left anything out.

Will the following provide the hardware needed? (I would like 2-3 water sensors that I can connect longer wire runs to)

Not sure about proper coding yet, but will research that.