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logotype: H2O IQ

H2O IQ

Water is life. Knowledge is power.

  • Home
    • FAQ
    • Mission | Service
  • Resources
    • At the Source — Water Quality
    • Video Library
    • References & Education
    • Substances & Characteristics
    • Terminology & Definitions
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Tag: contamination

San Mateo County schools’ drinking water contaminated with nitrate
November 2, 2023

San Mateo County schools’ drinking water contaminated with nitrate

Image from October shows a beaker filled with water from the faucet at Pescadero Middle/High School in Pescadero, Calif. KGO-TV...

USGS ARkStorm 1.0 study showed high risk of contamination from Tulare lake basin flooding
August 1, 2023

USGS ARkStorm 1.0 study showed high risk of contamination from Tulare lake basin flooding

The US Geological Survey’s ARkStorm studies included extensive analyses of vulnerabilities to flooding.  In 2016, USGS Researchers Geoffrey Plumlee,  Charles...

Rising groundwater threatens thousands of toxic sites in the Bay Area
June 25, 2023

Rising groundwater threatens thousands of toxic sites in the Bay Area

As climate change brings devastating storms and rising tides to California, many coastal communities face another threat, one that’s hidden...

Water board finds new culprit for cancer-causing chemical released in SLO. What’s next?
April 23, 2023

Water board finds new culprit for cancer-causing chemical released in SLO. What’s next?

Photo: Greg Mortka, left and Mark Nishibayashi install a passive soil gas probe near the airport fire station. Areas of...

New maps show the probability for radon and uranium in New Hampshire’s groundwater
March 27, 2023

New maps show the probability for radon and uranium in New Hampshire’s groundwater

Map: Probability of elevated radon in New Hampshire groundwater. This is the most comprehensive study to date and the first...

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