Hanford, California

What is the Water Quality in Hanford, California?

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

Most of their 20 contaminants have cancer-causing attributes.

• Arsenic is at extremely high levels: 1,050x health guidelines.
• Haloacetic acids (HAA5) are at extremely high levels: 98x health guidelines.
• Haloacetic acids (HAA9) are at extremely high levels: 300x health guidelines.
  • HAA5 and HAA9 are byproducts of chlorine treatment, a common method of disinfecting water supplies.

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

What’s in Hanford 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. Bromodichloromethane – Potential effect: Cancer
3. Chloroform – Potential effect: Cancer
4. Haloacetic acids (HAA5 and HAA9) – Potential effect: Cancer
5. Total trihalomethanes – Potential effect: Cancer

These are five of the 20 contaminants analyzed by the Environmental Working Group (ewg.org).

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

Does Hanford have Lead contamination?

No, Hanford does not currently have lead in its water. The most recent Lead samples collected from 2015 through 2017 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 filtered out.

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

Where does Hanford’s water come from?

Hanford’s water comes from the Sand Slough watershed.

There are no assessed water sources in the Sand Slough watershed.

Ideally, a water source would be Known and rated in Good condition.

Learn more from How’s My Waterway

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

What Can You Do?

Information about water quality in Hanford 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 80% of contaminants in your drinking water. (Berkey Light and Travel Berkey are the only types available in California.)
  • Berkey filters can also remove up to 99.99% of any Lead in Hanford water.
  • Brita can filter 11 of 20 contaminants 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 18 of the 20 contaminants in your whole house, consider a Reverse Osmosis water filtration system for your home.
  • These are typically more expensive than pitchers to purchase, but are much more effective.
  • They have the benefit of filtering out heavy hitters like:
    • Arsenic
    • Bromoform
    • Chloroform
    • Chromium (hexavalent)
    • Fluoride
    • Haloacetic acids (HAA5 and HAA9)
    • Germanium
    • Molybdenum
    • Strontium
    • Total trihalomethanes (TTHMs)

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.ci.hanford.ca.us/ to find contact information for your local officials.

Water Quality in Other California Cities

California Water Quality Page