Riverside, California

What is the Water Quality in Riverside, California?

Compared to other US cities, Riverside water quality ranks in the middle range for contamination excluding Lead.

Most of their 24 contaminants have cancer-causing attributes.

• Arsenic is at extremely high levels: 172x health guidelines.
• PFHXS is at high levels: 2.2x health guidelines.
• PFOA is at extremely high levels: 314x health guidelines.
• PFOS is at high levels: 3.4x health guidelines.
  • These are all considered “forever chemicals” by the EPA and are being studied extensively.

Let’s look closer at what’s in Riverside water.

What’s in Riverside water?

Here are the top 5 chemical compounds in your water and what health issues they can potentially cause:

1. Arsenic – Potential effect: Cancer
2. Haloacetic acids – Potential effect: Cancer
3. Hexavalent Chromium – Potential effect: Cancer
4. Radon – Potential effect: Cancer
5. Uranium – Potential effect: Cancer

These are five of the 24 contaminants analyzed by the Environmental Working Group (ewg.org).

12 of these contaminants are rated as exceeding EWG Health Guidelines.

Does Riverside have Lead contamination?

No, Riverside does not have lead in its water. The most recent Lead samples collected in 2019 showed concentrations of 0.0 parts per billion (ppb).

The legal limit for lead is 15 parts per billion. Being well-below this level is a good thing.

• Concentrations between 3.8 ppb and 15 ppb put a formula-fed baby at risk of elevated blood lead levels. Read more about the symptoms of Lead in water.

There is no safe level of lead for humans.

• The good news is that 99.99% of the lead can be removed.

See the What Can You Do? section below to learn how to filter out contaminants.

Where does Riverside’s water come from?

Riverside’s water comes from the Tequesquite Arroyo watershed.

4 of the 7 EPA assessed water sources in the Tequesquite Arroyo watershed are in Impaired or Unknown condition. These include:

• Lake Evans
• Santa Ana River Reaches 3,4, and 5

Ideally, a water source would be rated in Good condition. These are in Good condition:

• Magnolia Center Channel
• Tequesquite Arroyo (Sycamore Creek)
• University Wash Channel

Whether a water source is in Impaired or Good condition refers to the quality of these uses:

1. Drinking Water
2. Aquatic Life
3. Fish and Shellfish Consumption
4. Recreation

Learn more from How’s My Waterway

See below for what you can do to improve Riverside’s water.

What Can You Do?

Information about water quality in Riverside can be surprising.

But there are things you can do in your home to clean up your water.

To Remove Lead and Other Contaminants In Your Home:

There is one solution that beats Brita, PUR, and expensive whole house systems.

• It costs less per gallon.
• Needs fewer filter changes.
• And it doesn’t make your water taste weird.

• Use Berkey filters with activated carbon to filter out at least 65% of contaminants in your drinking water. (Berkey Light and Travel Berkey are the only types available in California.)
  • This includes Arsenic, PFOA, PFOS, PFHXS, PFHxA, and Radon.
  • Berkey filters can also remove up to 99.99% of any Lead in Riverside water.
  • Brita can filter 10 contaminants (41%) and Lead depending on the filter.
  • Note: We may receive a commission if you decide to purchase filters through links on this page.
• To filter out 22 of the 24 contaminants (91.7%), consider a Reverse Osmosis water filtration system for your house.
  • These are more expensive than pitchers to purchase, but are 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 effects in water
    • Bromoform
    • Dibromochloromethane
    • Fluoride
    • Hexavalent chromium – health effects
    • Molybdenum
    • Nitrate
    • Nitrite
    • PFBS
    • PFHxA
    • PFHXS
    • PFOA
    • PFOS
    • Radium
    • Radon
    • Strontium
    • Total trihalomethanes – byproduct of chlorination*
    • Uranium

*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://riversideca.gov/government to find contact information for your local officials.

Water Quality in Other California Cities

California Water Quality Page