The ILL EPA made them do this because the combined sewers would back up into the homeowners basements. We even smoke tested the sewer lines for illegal connections with the roof drains and sump pumps etc. Mickeyco, many years ago, I worked for that village when they were required to separate their stormwater from the sewage pipes. 1) Has anyone else here had experience of such systems? 2) Are they permitted by code? 3) If others here are encountering these, how do you advise your customer? This seems unwise to me: when the pump fails and/or the sewer lateral clogs you are going to be backing sewerage contaminated water into the drain tile system, and I'm a loss as to why code would allow that. However when I asked someone with a great deal of experience in Chicago and nearby communities he suggested this was quite likely a combination sump and sewerage ejector pump, with the inlet for the drain tiles discharging into the sump a few inches higher than the sewerage inlet - that while this is not an ideal arrangement he sees it frequently, that this arrangement is commonly passed by municipal inspectors, and that in Chicago (for example) since the 1990s it is common for a pump to serve both functions. This is been reported by a home inspector as a sump pump (no mention of an ejector pump), and I assumed this report had been in error. In a basement was what appeared to be a standard sewerage ejector pump serving a bathroom in the basement, vented off the house plumbing and discharging to an overhead sewer. Saw something the other day in Morton Grove IL about which I can't find much information.
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