Another day, Another peeve...

At my homeplace where my 98yo Mother still lives and I was born 73 years ago I remember when Grandfather had a 2 acre pond put in 1954. Spring fed and until a year ago clear water. You can see Google satellite view how grey/brown the water is now. About 40 years ago the county put in sewage pipes, one gravity one high pressure pipes in through the property.
I had county inspectors out and they called today saying everything is fine. The lake and creek has a sewer smell and water is cloudy gray. They said it's "stagnant water"!!!!!?
I called the DEQ and see if it can be escallated, although excavation and trying to find the problem won't be easy.
I'm certainly not expert, just common sense but I said why not have sample jars. Start upstream from lake, then lake, then downstream every few hundred feet. Testing for E. Coli (or whatever they do) if higher levels would show where it's coming from.
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