Arizona’s developers fight water limits in a dark-money showdown

A dark-money-backed lawsuit is challenging Arizona’s groundbreaking limits on development in areas with rapidly disappearing groundwater, a move that could reshape water policy across the Southwest.

Katya Schwenk reports for The Lever.


In short:

  • Arizona regulators halted new housing developments in Phoenix’s fast-growing suburbs in 2023, citing a severe groundwater shortage that threatens the region’s future.
  • Developers, backed by the Goldwater Institute, are suing to overturn the limits, arguing state groundwater models are flawed and that the restrictions are worsening the housing crisis.
  • Experts warn that Phoenix is running out of groundwater, a finite resource that, once gone, won’t replenish for thousands of years — making water conservation critical as climate change accelerates droughts.

Key quote:

“This is nothing but a shameless and partisan attack by bad actor developers trying to get a short-term profit by pumping the water out from under Arizona families and farmers.”

— Spokesperson for Arizona Gov. Katie Hobbs

Why this matters:

Phoenix’s sprawl is at odds with its water reality. As the Southwest dries up, the outcome of this legal battle could determine whether Arizona prioritizes long-term water security or short-term development profits. It could have a bearing on how other arid states approach water policy as well.

Read more: Capturing and reusing urban storm water could be a boon for water-stressed cities.

Firefighters fight a blaze

Increased autism risk linked to exposure to wildfire smoke during pregnancy

In a first-of-its-kind study published in Environmental Science and Technology, researchers found that mothers who were exposed to wildlife smoke during the third trimester of pregnancy were more likely to have children diagnosed with autism by age 5.


In short:

  • More frequent exposure to wildlife smoke during pregnancy was associated with a higher risk of autism in children.
  • The study analyzed more than 200,000 mother-child pairs in Southern California between 2006 to 2014; nearly 60% of them were exposed to wildfire smoke for more than 5 days during pregnancy.
  • The authors also found that prenatal exposure to particulate matter air pollution from a variety of sources — not just wildfires — is associated with an increased risk of autism in children.


Key quote:

“As climate change increases the frequency and intensity of wildfires in many parts of the world, understanding their relationship with autism is important to being able to develop preventive policy and interventions that will protect pregnant women and their children.”

- Study co-author Mostafijur Rahman, via Tulane University’s accompanying press release


Why this matters:

As climate change continues to impact global weather patterns, wildfires have become increasingly intense and frequent. Their impact on air pollution is significant - in California, wildfires account for over 70% of the fine particulate matter exposure on days with poor air quality. Environmental hazards that affect the health of pregnant people and their children can have long-term and severe outcomes. The authors of this study underscore the need for policies that protect vulnerable populations from air pollution and reduce the inequality in its health impacts.


Related EHN coverage:


More resources:

Luglio, David et al. for Environmental Science & Technology. Jan. 20, 2026
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