i have been presented with a couple of situations where a traditional septic system (septic tank, distribution box and leach field) has a chlorinator on the tail end of the system after the leach field with a daylighted outlet pipe. The local Health Dept. says the installations are a grandfathered non-conforming system. My take on it is that there was probably very limited absorption in the leach field or the field was clogged up around the perf pipes and the chorlinator and daylight pipe were added as a cheap way to avoid discharging untreated wastes to the surface instead of fixing the leach field. i think the system should be “passed” on the basis of “no untreated discharge or breakout” with notation stating that the HD says this is a “grandfathered non-conforming system” and that if there is any failure of a component the HD may likely require that the whole system or major components be replaced to bring it into conformance and that would be quite expensive.
Please share your thoughts.