What is the Water Quality in Woodland, California?
Compared to other US cities, Woodland water quality ranks in the lower-middle range for contamination excluding Lead.
Most of their 17 contaminants have cancer-causing attributes.
- Haloacetic acids (HAA5) are at extremely high levels: 54x health guidelines.
- Haloacetic acids (HAA9) are at extremely high levels: 150x health guidelines.
- HAA5 and HAA9 are byproducts of chlorine treatment, a common method of disinfecting water supplies. They can both be removed using activated carbon filters. See below for recommendations.
Let’s look closer at what’s in Woodland water.
What’s in Woodland water?
Here are the top 5 chemical compounds in your water and what health issues they can potentially cause:
- Hexavalent Chromium – Potential effect: Cancer
- Haloacetic acids (HAA5 and HAA9) – Potential effect: Cancer
- Nitrate – Potential effect: Cancer
- Nitrate and nitrite – Potential effect: Cancer
- Total trihalomethanes – Potential effect: Cancer
These are five of the 16 contaminants analyzed by the Environmental Working Group (ewg.org).
6 of the total contaminants are rated as exceeding EWG Health Guidelines.
Does Woodland have Lead contamination?
No, Woodland does not currently have lead in its water. The most recent Lead samples collected from 2017 through 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 filtered out.
See the What Can You Do? section below to learn how to filter out contaminants.
Where does Woodland’s water come from?
Woodland’s water comes from the Goodnow Slough – Cache Creek watershed.
All 3 assessed water sources in the Goodnow Slough – Cache Creek watershed are in Impaired or Unknown condition. These include:
- Cache Creek (Lower)
- Gordon Slough
- Winters Canal (Yolo County)
Ideally, a water source would be rated in Good condition.
Whether a water source is in Impaired or Good condition refers to the quality of three uses:
- Aquatic Life
- Fish and Shellfish Consumption
Learn more from How’s My Waterway
See below for what you can do to improve Woodland’s water.
Conclusion – What Can You Do?
Information about water quality in Woodland can be surprising.
But there’s no reason to lose hope. There are things you can do in your home as well as things you can do at a community level.
- Use Berkey filters with activated carbon to filter out at least 69% of contaminants in your drinking water. (Berkey Light and Travel Berkey are the only types available in California.)
- To filter out 13 of the 17 contaminants, consider a Reverse Osmosis Pentair 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 – irritant of the eyes and respiratory tract. “Exposure may cause damage to the central nervous system, liver and kidneys.” (source)
- Haloacetic acids (HAA5)
- Haloacetic acids (HAA9)
- Hexavalent chromium
- Total trihalomethanes – byproduct of chlorination*
*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: http://www.cityofwoodland.org/ to find contact information for your local officials.