CCNS MARCONI AREA
PWS ID: MA4318047 · WELLFLEET, Massachusetts 02667
Population Served
499
Total Violations
85
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Federal
- Connections
- 17
- County
- Barnstable
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 78
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 8 | 2007 |
| Coliform (TCR) | MR | 3 | 1999 |
| Coliform (TCR) | MCL | 2 | 1996 |
| Lead and Copper Rule | TT | 2 | 2008 |
| Benzene | MR | 1 | 2006 |
| trans-1,2-Dichloroethylene | MR | 1 | 2006 |
| cis-1,2-Dichloroethylene | MR | 1 | 2006 |
| 1,2-Dichloropropane | MR | 1 | 2006 |
| Ethylbenzene | MR | 1 | 2006 |
| p-Dichlorobenzene | MR | 1 | 2006 |
| Carbon tetrachloride | MR | 1 | 2006 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2006 |
| 1,1-Dichloroethylene | MR | 1 | 2006 |
| 1,2-Dichloroethane | MR | 1 | 2006 |
| Trichloroethylene | MR | 1 | 2006 |
| Vinyl chloride | MR | 1 | 2006 |
| CHLOROBENZENE | MR | 1 | 2006 |
| o-Dichlorobenzene | MR | 1 | 2006 |
| Cadmium | MR | 1 | 1998 |
| Chromium | MR | 1 | 1998 |
| CYANIDE | MR | 1 | 1998 |
| Fluoride | MR | 1 | 1998 |
| Mercury | MR | 1 | 1998 |
| Selenium | MR | 1 | 1998 |
| Antimony, Total | MR | 1 | 1998 |
| 2,4,5-TP | MR | 1 | 1994 |
| Aldicarb sulfone | MR | 1 | 1994 |
| Endrin | MR | 1 | 1994 |
| OXAMYL | MR | 1 | 1994 |
| Endothall | MR | 1 | 1994 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.