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DRIVER-INFRASTRUCTURE-FUNDING-POLITICS 5-year update to 50-year Texas Water Plan QUICK FACTS: **Texas' state water plans are based on future conditions in the event of a recurrence of the worst recorded drought in Texas' history-known as the "drought of record"-a time when, generally, water supplies are lowest and water demands are highest. **Texas' population is anticipated to increase 73 percent between 2020 and 2070, from 29.7 million to 51.5 million, with approximately half of this growth occurring in Regions C and H. Water demands are projected to increase less significantly, by approximately 9 percent between 2020 and 2070, from 17.7 million to 19.2 million acre-feet per year. **Texas' existing water supplies-those that can already be relied on in the event of drought-are projected to decline by approximately 18 percent between 2020 and 2070, from 16.8 million to 13.8 million acre-feet per year primarily due to reservoir sedimentation and depletion of aquifers. **Water user groups face a potential water shortage of 3.1 million acre-feet per year in 2020 and 6.9 million acrefeet per year in 2070 in drought of record conditions. **Approximately 5,800 water management strategies recommended in this plan would provide 1.7 million acrefeet per year in additional water supplies to water user groups in 2020 and 7.7 million acre-feet per year in 2070. **Conservation strategies represent approximately 29 percent, or 2.2 million acre-feet per year, of all recommended water management strategy volumes in 2070 and were recommended for more than half of the water user groups in the plan. **The estimated capital cost to design, construct, and implement the more than 2,400 recommended water management strategy projects by 2070 is $80 billion. If strategies are not implemented, approximately one-quarter of Texas' population in 2070 would have less than half the municipal water supplies they will require during a drought of record. **If Texas does not implement the sta

Australia has lost about 30% of its koalas over the past three years, hit by drought, bushfires and developers cutting down trees

I did not like because I am anti-koala!

In a 2018 survey and assessment, the Environmental Protection Agency (EPA) found that drinking water infrastructure alone needed nearly $500 billion in maintenance and improvements over the next 20 years. This figure does not even include the cost of addressing lead service line issues and the need to add additional capacity in growing communities. Coupled with the need to replace aging pipes, water utilities are facing the need to prepare for the impacts of climate change on their operations. Recent drought events suggest that water supplies in many states will face serious challenges just to keep operating normally.

DRIVER-INFRASTRUCTURE-SCARCITY-POLITICS By 2071, nearly half of the 204 freshwater basins in the United States may not be able to meet the monthly water demand. These model projections, recently published in the journal Earth's Future, are just one preliminary component of the upcoming Resources Planning Act (RPA) Assessment expected to be published next year. In 1974, congress required that this assessment of US renewable resources be published every 10 years. Conducted by the U.S. Forest Service, the research describes two causes for the projected shortages. The first is that the U.S. will simply have more people. Despite that the average American is using less water, population growth is still expected to increase water demand across most of the country. Second, the water supply itself is expected to decrease. Projected climate change affects both rain patterns and temperatures. While rainfall is expected to increase in some parts of the US, the southern Great Plains and parts of the South won't be so lucky. The water basins rely on rainfall to feed the rivers and tributaries that flow into them. Separately, more water will evaporate from reservoirs and streams as the climate gets warmer, further chipping away at the water supply. Around 50 years from now, many U.S. regions may see water supplies reduced by a third of their current size, while demand continues to increase.

DRIVERS-SCARCITY-INFRASTRUCTURE This study estimates the likelihood of water shortages over the remainder of the 21st century in 204 watersheds covering the contiguous United States. The estimates are based on monthly projections of water demand and renewable water supply in light of population growth and climate change, taking into account water storage and transbasin diversion capacities. The study then examines several possible adaptations to projected shortages, including water withdrawal efficiency improvements, reservoir storage enhancements, demand reductions, instream flow reductions, and groundwater depletion. Results provide a broad measure of the relative efficacy of the adaptation measures and show when and where the measures are likely to be helpful.

DRIVER-WATER TREATMENT TECHNOLOGY Ozone water treatment oxidizes iron, manganese, and sulfur in your well water to form insoluble metal oxides or elemental sulfur. These insoluble particles such as rust, are then removed by filtration which is typically activated carbon, manganese dioxide, or other media such as filter sand. Ozone is much faster at killing bacteria and oxidizing iron and manganese compared to chlorine or peroxide. One advantage for home use is that ozone is quite unstable and will degrade over a time frame ranging from a few seconds to 30 minutes.