Castle Rock, Colorado

Castle Rock, Colorado Castle Rock, Colorado

What is the Water Quality in Castle Rock, Colorado?

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

Most of their 25 contaminants have cancer-causing attributes.

  • Radium is at very high levels: 59x health guidelines.
  • Haloacetic acids (HAA5) are at very high levels: 10x health guidelines.
  • Haloacetic acids (HAA9) are at very high levels: 50x health guidelines.
    • These are both byproducts of the chlorine treatment process most water supplies go through.

Let’s look closer at what’s in Castle Rock water.

What’s in Castle Rock water?

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

  1. Bromodichloromethane – Potential effect: Cancer
  2. Chloroform – Potential effect: Cancer
  3. Hexavalent Chromium – Potential effect: Cancer
  4. Radium – Potential effect: Cancer
  5. Total trihalomethanes – Potential effect: Cancer

These are five of the 25 contaminants analyzed by the Environmental Working Group (ewg.org).

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

Does Castle Rock have Lead contamination?

Yes, Castle Rock has lead in its water. The most recent Lead samples collected in 2018 showed concentrations up to 2.0 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 Castle Rock’s water come from?

Castle Rock’s water comes from the Lower East Plum Creek watershed.

One of the two EPA assessed water sources in the Lower East Plum Creek watershed is in Impaired condition. This is the main stem of East Plum Creek.

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 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 Castle Rock’s water.

What Can You Do?

Information about water quality in Castle Rock 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.

Take Control of Your Water with Berkey Filters

  • Use Berkey filters with activated carbon to filter out at least 88% of contaminants in your drinking water.
    • Berkey filters can also remove up to 99.99% of Lead in Castle Rock water.
    • Brita can filter 12 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 23 of the 25 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:

*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://castlerockgov.com/ to find contact information for your local officials.

Water Quality in Other Colorado Cities

Colorado Water Quality Page

Sign In

Register

Reset Password

Please enter your username or email address, you will receive a link to create a new password via email.