Harrow Brook again. The supply of contaminant seemed to have stopped and a little overnight drizzle had diluted things a bit, but it was still noticeably blue. We walked upstream again from the Harrowbrook roundabout, taking pics until we came to the end of the accessible bank-side:
Progress being foiled, we back-tracked to the car and drove to a spot upstream where the brook enters the industrial estate.
There, next to the Ashby Canal, we found where the blue stuff was still trickling into the brook:
We traced the outflow to a ditch which was still bright blue, where the foot-bridge was adorned with a couple of "portable loo" panels:
A little further up we found where the blue stuff was entering the ditch... a pipe leading from the unit in the corner of the industrial estate:
Even further up, on the other side of the A47, there was no blue:
Now, I'm not an expert on these matters, but they say that if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck...
so maybe this one is a toilet-duck?
Here's what's in the compound of that unit in the corner of the industrial estate:
No names, no pack-drill. Nothing is proven yet. The E.A. can call this one.