Thread: Water leak dye.
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Old 06-05-2019, 01:52 PM   #2
Northern Spy
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City: Powell River, BC
Country: Canada
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Join Date: Feb 2012
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You can buy water dye in liquid or tablet form. Used in public works application. I actually have some tablets from my past tracing underground storm drain tie-ins to outfalls. Probably the same stuff they use in holding tank overboard detection.

Ask a public works guy. Got mine from Acklands-Grainger.

For low volume, could use food coloring at a high dose.

Can also buy a cheap UV flashlight which might help with some color detection.
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