GRAND COUNTY WATER NO 1
PWS ID: CO0125323 · WINTER PARK, Colorado 80482
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
5,400
Total Violations
747
Health-Based Violations
24
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 702
- County
- Grand
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 663
- Treatment Tech Violations
- 24
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Interim Enhanced Surface Water Treatment Rule | MR | 77 | 2023 |
| Surface Water Treatment Rule | MR | 39 | 2024 |
| Lead and Copper Rule | MR | 33 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 30 | 2024 |
| TTHM | MR | 30 | 2024 |
| Public Notice | Other | 30 | 2022 |
| Chlorine | MR | 26 | 2024 |
| Consumer Confidence Rule | Other | 23 | 2024 |
| Groundwater Rule | TT | 20 | 2016 |
| Revised Total Coliform Rule | MON | 20 | 2024 |
| Coliform (TCR) | MR | 17 | 2011 |
| E. COLI | MR | 9 | 2017 |
| Endrin | MR | 8 | 2008 |
| Toxaphene | MR | 8 | 2008 |
| Diquat | MR | 8 | 2008 |
| Endothall | MR | 8 | 2008 |
| OXAMYL | MR | 8 | 2008 |
| Simazine | MR | 8 | 2008 |
| Di(2-ethylhexyl) phthalate | MR | 8 | 2008 |
| Dinoseb | MR | 8 | 2008 |
| Hexachlorocyclopentadiene | MR | 8 | 2008 |
| Aldicarb sulfone | MR | 8 | 2008 |
| Carbofuran | MR | 8 | 2008 |
| Atrazine | MR | 8 | 2008 |
| LASSO | MR | 8 | 2008 |
| Heptachlor | MR | 8 | 2008 |
| Heptachlor epoxide | MR | 8 | 2008 |
| 2,4,5-TP | MR | 8 | 2008 |
| HEXACHLOROBENZENE | MR | 8 | 2008 |
| Pentachlorophenol | MR | 8 | 2008 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 240 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 8/13/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFMPA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 4:2 FTS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMBA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 8/13/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHxA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 8/13/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFOA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFUnA | 8/13/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/13/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFNA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 8/13/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFDoA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDoA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 8/13/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 8/13/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 8/13/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 8/13/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFEESA | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 8/13/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 8/13/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/13/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NFDHA | 8/13/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFMBA | 8/13/2024 | <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.