Daniel, perhaps you might take your own advice and stick to the facts. As Dave has just said, septic systems in La Manzanilla do not 'treat' raw sewage in the sense that you suggest ..... that is, rendering it somewhat safe to the environment. To my knowledge there are few leach fields in town. Rather, the double tank system separates out much of the solid waste so that the liquid can leach out into the ground. Properly built septic tanks do of course break down the waste, to a degree, through a complex chemical process. However, properly functioning septic systems do require proper maintenance and periodic pumping out. Without this maintenance and care, the wastewater will contain disease-causing bacteria and viruses, household chemicals, and excess nutrients. All of these contaminants can cause serious health problems.
I would suggest that water emerging from overflowing manholes just MIGHT be contaminated. Yes, resist pushing the panic button until proper testing is done. Since the tests just might confirm what many people now believe, the topic may be worthy of more THOUGHTFUL discussion. If you, and a few others, are tired of it, don't read it. But at least don't put down those who want to continue.
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