It has done little to regulate farm runoff, a major source of water pollution.
Nonrenewable aquifers are the major source of water in Saudi Arabia.
During dry seasons these rivers are a major source of water for people and animals.
After some 3,000 years qanāts are still a major source of water in Iran.
Groundwater is a major source of water in the western US.
This "third pole" is a major source of water for nearly half the world's population with its glaciers and permafrost.
The pigs were found in a section of the Huangshui River which is a major source of water for irrigation for the surrounding regions.
People forget: Yellowstone National Park is "the major source of water for both the Yellowstone and the Snake Rivers," said Gross.
The major source of water in modern and ancient Yucatán, cenotes are also associated with the cult of the rain gods, or Chacs.
In some areas, artesian wells and springs are a major source of water, especially in arid plains adjacent to mountain ranges that receive precipitation.
The commissioners asked about the well's proximity to tributaries of the Brazos River, the longest river in Texas and a major source of water.
