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The 'densification' that planners push to accommodate overpopulation drives increasing water pollution risks, along with climate change. “Generally, we expect urbanisation to increase groundwater DOC (dissolved organic carbon) concentrations by up to 19 per cent, compared to agricultural or natural land use, likely as the result of contamination – for example, through leaking septic and sewer systems.” (Research paper.)

Climate change and urbanisation are set to threaten groundwater drinking water quality, new research from UNSW Sydney shows.
More than half of the world’s population faces a looming threat to the quality and availability of their drinking water because climate change and urbanisation are expected to cause an increase in groundwater organic carbon, a new UNSW study has found.

The research, published in Nature Communications overnight, examined the largest global dataset of 9404 published and unpublished groundwater dissolved organic carbon (DOC) concentrations from aquifers in 32 countries across six continents.

YaleGlobal announces: "Prepare for the 21st Century Exodus of Migrants ... Cross-border immigration accounts for much of the population growth in developed countries with low fertility rates. Such immigration has also become an election issue around the globe." Unfortunately open borders are being promoted in order to maintain constant population growth; the 'developed world' ideas managers are not really trying to avert this disaster. "If those taking steps necessary to migrate were to immigrate to desired destinations, the result would expand UN-projected annual numbers for major migrant-receiving Western countries by more than tenfold," writes Joseph Chamie, (this Yale article). That would mean immigration at about 2.5m every year in Australia, or about 10% of Australia's current population. This would have Australia's population initially doubling in 10 years, but of course it would then grow faster and faster, due to compounding natural increase and an increasing population base! 75% of Australia is rangelands and arid desert, similar to North Africa. Australia's politically engineered immigration-fed population growth rate is already overwhelming its infrastructure. The increased demand means money for developers, but increased prices for most people.