CASTLE PINES NORTH MD
PWS ID: CO0118006 · CASTLE PINES, Colorado 80109
PFAS Detected
5 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
12,800
Total Violations
231
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,039
- County
- Douglas
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 214
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 9 | 2021 |
| Combined Radium (-226 and -228) | MR | 7 | 2014 |
| Revised Total Coliform Rule | Other | 7 | 2022 |
| Chlorine | MR | 6 | 2008 |
| Consumer Confidence Rule | Other | 5 | 2021 |
| cis-1,2-Dichloroethylene | MR | 4 | 2005 |
| DICHLOROMETHANE | MR | 4 | 2005 |
| o-Dichlorobenzene | MR | 4 | 2005 |
| p-Dichlorobenzene | MR | 4 | 2005 |
| 1,1-Dichloroethylene | MR | 4 | 2005 |
| trans-1,2-Dichloroethylene | MR | 4 | 2005 |
| 1,2-Dichloroethane | MR | 4 | 2005 |
| Carbon tetrachloride | MR | 4 | 2005 |
| 1,2-Dichloropropane | MR | 4 | 2005 |
| Trichloroethylene | MR | 4 | 2005 |
| Tetrachloroethylene | MR | 4 | 2005 |
| CHLOROBENZENE | MR | 4 | 2005 |
| Public Notice | Other | 4 | 2023 |
| 1,1,1-Trichloroethane | MR | 4 | 2005 |
| Styrene | MR | 4 | 2005 |
| Toluene | MR | 4 | 2005 |
| Xylenes, Total | MR | 4 | 2005 |
| Ethylbenzene | MR | 4 | 2005 |
| Vinyl chloride | MR | 4 | 2005 |
| Benzene | MR | 4 | 2005 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2005 |
| 1,1,2-Trichloroethane | MR | 4 | 2005 |
| TTHM | MR | 3 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2009 |
| BHC-GAMMA | MR | 3 | 2014 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 6 of 60 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| lithium | 10/8/2025 | 21.0000 µg/L | 9 µg/L | Detected |
| 9Cl-PF3ONS | 10/8/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFTrDA | 10/8/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NMeFOSAA | 10/8/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBS | 10/8/2025 | 0.0033 µg/L | 0.003 µg/L | Detected |
| PFHpA | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 10/8/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 10/8/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 10/8/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 10/8/2025 | 0.0032 µg/L | 0.003 µg/L | Detected |
| PFTA | 10/8/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| 11Cl-PF3OUdS | 10/8/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeS | 10/8/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| ADONA | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 10/8/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 10/8/2025 | 0.0060 µg/L | 0.005 µg/L | Detected |
| 6:2 FTS | 10/8/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 10/8/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 10/8/2025 | 0.0036 µg/L | 0.003 µg/L | Detected |
| PFMBA | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 10/8/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFHpS | 10/8/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 10/8/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 10/8/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 8:2 FTS | 10/8/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 10/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NEtFOSAA | 10/1/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 10/1/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 10/1/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFOS | 10/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 10/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 10/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 10/1/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 10/1/2025 | 24.0000 µg/L | 9 µg/L | Detected |
| PFPeA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 10/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 10/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.