check if flushing toilet may be causing a leak in basement Home › Forums › Public Forums › Drainage & Sewerage › check if flushing toilet may be causing a leak in basement This topic has 2 replies, 3 voices, and was last updated 23 years, 8 months ago by Guest. Viewing 2 reply threads Author Posts 19 Dec 2000 at 11:08 am #278807 Anonymous What can I use to color the water in the toilet and tank to see if it is the toilet that leaks when flushed. lots of food coloring? or any other suggestions. 20 Dec 2000 at 2:29 am #299337 SylvanLMPParticipant I use this highly concentratd industrial dye that is great for these types of problems. Go to a plumbing supply store and ask for dye BE prepared to pay upwards of $85 per pound BUT a little bit goes a long long way Good luck 20 Dec 2000 at 3:13 pm #299338 GuestParticipant Whatever you use, be sure it does not permanently stain whatever it is leaking onto. Author Posts Viewing 2 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In