What can be causing our drinking water to have a reddish color?
Your water might be affected by iron, which is a commonly-occurring constituent of drinking water. Iron tends to add a rusty, reddish-brown (or sometimes yellow) color to water. If the color is more black than red, your water might contain a combination of iron and manganese. Both of these metals can cause staining of plumbing fixtures or laundry, but they are not known to cause health problems.
Learn more: USGS Drinking Water and Source Water Research
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The Quality of the Nation’s Groundwater: Progress on a National Survey
The U.S. Geological Survey is near the midpoint of a complex undertaking to survey the quality of the nation’s largest drinking-water resource.
Current website: https://www.usgs.gov/news/quality-nation-s-groundwater-progress-a-nation...
New Study Shows High Potential for Groundwater to be Corrosive in Half of U.S. States
An analysis of more than 20,000 wells nationwide shows 25 states have groundwater that has either high or very high potential to be corrosive...
Glass of drinking water - municipal water use
Stock photo
A young girl drinks water, which likely originated from groundwater
A young girl drinks water, which likely originated from groundwater sources.
The USGS is near the midpoint of a complex undertaking to survey the quality of the nation’s largest drinking-water resource. From 2012 – 2023, the USGS is assessing groundwater throughout the country through extensive sampling. The latest results from five regional aquifers are now
...Drinking water from tap
The quality of the water we drink can potentially impact our health. The USGS has several programs and cooperative projects that characterize the quality of selected rivers and aquifers used as sources of drinking water to community water systems in the United States.
Drought, Drinking Water and Natural Environments
This short video is one of a series of four total shorts highlighting USGS water science in California's Delta region. The Sacramento-San Joaquin Delta is the hub of the state's water system. Water quality touches on all aspects of life. Teams of U.S. Geological Survey scientists along with their partners monitor water quality and identify sources of pollution and
Why does my drinking water look milky or cloudy sometimes?
Listen to hear the answer.
Iron Bog near Rochford, SD
Naturally occuring bog-iron area near Rochford, SD, in the Black Hills of western South Dakota.
Natural Iron-rich Acidic Spring Flowing into Cement Creek
Photograph showing natural iron-rich acidic spring flowing into Cement Creek near Silverton, Colorado. Similar natural springs contribute water to Cement Creek and other tributaries of the upper Animas River.