Water Quality in Corona, California
Watershed: Lake Norconian – Temescal Wash
What is the water quality like in Corona, CA?
Let’s dive deeper into what’s in Corona water.
What’s in Corona water?
Here are the top 7 chemical compounds in your water and what health issues they can potentially cause:
- Arsenic – Potential effect: Cancer
- Bromodichloromethane – Potential effect: Cancer
- Chloroform – Potential effect: Cancer
- Haloacetic acids – Potential effect: Cancer
- Hexavalent Chromium – Potential effect: Cancer
- Total trihalomethanes – Potential effect: Cancer
- Uranium – Potential effect: Cancer
These are seven of the 33 contaminants analyzed by the Environmental Working Group (ewg.org).
18 of these contaminants are rated as exceeding EWG Health Guidelines.
See the What Can You Do? section below for all of the contaminants you can filter out and how to do it.
Where does Corona’s water come from?
Corona’s water comes from the Lake Norconian – Temescal Wash watershed.
1 of the 5 EPA assessed water sources in the Lake Norconian – Temescal Wash watershed is in Impaired condition. This is the Prado Basin Management Zone.
Ideally, a water source would be rated in Good condition. These are in Good condition:
- Corona Channel
- North Norco Channel
- Temescal Creek, Reaches 1 and 1A
Whether a water source is in Impaired or Good condition refers to the quality of these uses:
- Drinking Water
- Aquatic Life
- Fish and Shellfish Consumption
Learn more from How’s My Waterway
See below for what you can do to improve Corona’s water.
Conclusion – What Can You Do?
Information about water quality can be surprising.
But there’s no reason to lose hope. There are things you can do in your household as well as things you can do at a community level.
In Your Household:
- Use Berkey filters with activated carbon to filter out 27 of the 33 contaminants in your drinking water. (Berkey Light and Travel Berkey are the only types available in California.)
- To filter out 30 of the 33 contaminants, consider a Reverse Osmosis water filtration system for your house.
- These are more expensive than pitchers to purchase, but can be more effective.
- They have the benefit of filtering out heavy hitters like:
- 1,4-Dioxane – “Exposure may cause damage to the central nervous system, liver and kidneys.”
- Arsenic – health risks
- Barium – health risks in water
- Bromochloroacetic acid
- Bromodichloromethane – health risks in drinking water
- Chloroform – side effects
- DBCP – soil fumigant causing male sterility at high exposure levels.
- Dibromoacetic acid
- Dichloroacetic acid
- Haloacetic acids – chlorination byproduct*
- Hexavalent chromium – health effects
- Selenium – health risks
- Total trihalomethanes – byproduct of chlorination*
- Trichloroacetic acid
*Chlorination is an effective method of disinfecting/treating drinking water. You can then use a water filter to reduce the effects of chlorination byproducts to get the safest, cleanest water possible.
In Your Community:
Contact your local government officials and put pressure on them to invest in cleaner waterways and upgraded city water filtration and treatment.
Go to: https://www.coronaca.gov/ to find contact information for your local officials.