Castle Rock Water Contaminants Detected
Location
Castle Rock, Colorado
Serves
99,757
Source
Surface Water
Data
2014-2024
Arsenic
Potential Effect: Cancer
This Utility: 0.348 ppb
Legal Limit: 10 ppb
87x
EWG’s Health Guideline: 0.004 ppb
Bromate
Potential Effect:
This Utility: 2.25 ppb
Legal Limit: 10 ppb
23x
EWG’s Health Guideline: 0.1 ppb
Bromodichloromethane
Potential Effect: Cancer
This Utility: 1.17 ppb
No Legal Limit
19x
EWG’s Health Guideline: 0.06 ppb
Chloroform
Potential Effect: Cancer
This Utility: 1.01 ppb
No Legal Limit
2.5x
EWG’s Health Guideline: 0.4 ppb
Chromium (hexavalent)
Potential Effect: Cancer
This Utility: 0.254 ppb
Legal Limit: 60 ppb
13x
EWG’s Health Guideline: 0.02 ppb
Dibromoacetic acid
Potential Effect:
This Utility: 0.661 ppb
No Legal Limit
22x
EWG’s Health Guideline: 0.03 ppb
Dibromochloromethane
Potential Effect: Cancer
This Utility: 1.53 ppb
No Legal Limit
15x
EWG’s Health Guideline: 0.1 ppb
Dichloroacetic acid
Potential Effect: Cancer
This Utility: 0.675 ppb
No Legal Limit
3.4x
EWG’s Health Guideline: 0.2 ppb
Haloacetic acids (HAA5)
Potential Effect: Cancer
This Utility: 1.50 ppb
Legal Limit: 60 ppb
15x
EWG’s Health Guideline: 0.1 ppb
Haloacetic acids (HAA9)
Potential Effect: Cancer
This Utility: 3.02 ppb
No Legal Limit
50x
EWG’s Health Guideline: 0.06 ppb
Nitrate and nitrite
Potential Effect: Cancer
This Utility: 0.353 ppm
Legal Limit: 10 ppm
2.5x
EWG’s Health Guideline: 0.14 ppb
Radium, combined (-226 and -228)
Potential Effect: Cancer
This Utility: 2.33 pCi/L
Legal Limit: 5 pCi/L
47x
EWG’s Health Guideline: 0.05 pCi/L
Total trihalomethanes (TTHMs)
Potential Effect: Cancer
This Utility: 4.54 ppb
Legal Limit: 80 ppb
30x
EWG’s Health Guideline: 0.15 pCi/L
| CONTAMINANTS ABOVE HEALTH GUIDELINES | activated carbon | reverse osmosis | ion exchange |
|---|---|---|---|
| Arsenic | no | yes | yes |
| Bromate | yes | yes | yes |
| Bromodichloromethane | yes | yes | no |
| Chloroform | yes | yes | no |
| Chromium (hexavalent) | no | yes | yes |
| Dibromoacetic acid | yes | yes | no |
| Dibromochloromethane | yes | yes | no |
| Dichloroacetic acid | yes | yes | no |
| Haloacetic acids (HAA5) | yes | yes | no |
| Haloacetic acids (HAA9) | yes | yes | no |
| Nitrate & nitrite | no | yes | yes |
| Radium, combined (-226 & -228) | no | yes | yes |
| Total trihalomethanes (TTHMs) | yes | yes | no |
| OTHER CONTAMINANTS DETECTED | activated carbon | reverse osmosis | ion exchange |
|---|---|---|---|
| Barium | no | yes | yes |
| Bromoform | yes | yes | no |
| Chlorate | no | no | no |
| Chromium (total) | no | yes | yes |
| Fluoride | no | yes | no |
| Lithium | no | yes | yes |
| Manganese | no | no | yes |
| Molybdenum | no | yes | yes |
| Monobromoacetic acid | yes | yes | no |
| Nitrate | no | yes | yes |
| Perfluorobutanoic acid (PFBA) | yes | yes | no |
| Perfluoropentanoic acid (PFPeA) | yes | yes | no |
| Selenium | no | yes | no |
| Strontium | no | yes | yes |
| Trichloroacetic acid | yes | yes | no |
| Uranium, combined (pCi/L) | no | yes | yes |
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