I think it is a problem of waste water treatment plants, causing fish to die a lot, it may have to deal with poor drainage, because it often occurs over a natural disaster occurred.
I think it's a problem of wastewater treatment plants, many of which can cause fish kills. May be dealing with poor drainage. Because it often takes more than a natural disaster.
I think it is the problem of wastewater treatment plant, causing many dead fish. May deal with drainage is poor. Because it is often happened to a natural disaster.