Community Water System · PWS SC1850009
Dcwa Calomet Valley (1850009)
Operator location Summerville, South Carolina - UCMR5 detected 7 PFAS compounds (upper-third PFAS panel (> 4 compounds)) on this PWS; SDWIS lists 0 violations and 275 people served.
- 275
- People served (this PWS) Smaller third of systems
- 0
- EPA violations (this PWS) Lower third of systems
- 0
- Health-based (this PWS) No violations on record
- 7 PFAS
- UCMR5 (this PWS) Upper third of PFAS-detected systems
Dcwa Calomet Valley (1850009) standing, low SDWIS violation third
UCMR5 detected 7 PFAS compounds - upper-third PFAS panel (> 4 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). UCMR5: upper-third PFAS panel (> 4 compounds).
The verdict
Dcwa Calomet Valley (1850009) is in the lower third by violation count (0; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is smaller (275; smaller served population (≤ 999)), so each violation row represents a compact service footprint. No violations are on record in this extract. UCMR5 detected 7 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- 0
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
- 275
- People served by this PWS (SDWIS)
- 7
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
7 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Based on EPA SDWIS violation history and UCMR5 PFAS testing only, not water taste, odor, infrastructure age, or contaminants outside the federally tracked set.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 97
- County
- Dorchester
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
Violation Count vs. the National Corpus
Dcwa Calomet Valley (1850009) has 0 recorded EPA violations, 0% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 96% carry more. 0% of this system's own violations are health-based (0 of 0), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
0 Among the lowest violation counts fewer violations than 96% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
How many violations vs. how serious, among peer systems
Dcwa Calomet Valley (1850009) plotted against 29 peer public water systems (500+ people served), by total violation count (x) and the share of those violations that are health-based (y). The crosshair sits at this sample's own median on each axis. A high violation count does not automatically mean a serious record: most monitoring and reporting violations are minor, not health-based.
Violation volume vs. health-based share
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 23 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NMeFOSAA | 8/22/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 8/22/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| NEtFOSAA | 8/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/22/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFBS | 5/15/2023 | 4.60 ppt | 3.00 ppt | Detected |
| PFUnA | 5/15/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 5/15/2023 | 4.20 ppt | 3.00 ppt | Detected |
| PFDoA | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 5/15/2023 | 4.00 ppt | 4.00 ppt | Detected |
| PFOS | 5/15/2023 | 4.20 ppt | 4.00 ppt | Detected |
| PFNA | 5/15/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 5/15/2023 | 4.90 ppt | 3.00 ppt | Detected |
| PFHpA | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 5/15/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 5/15/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 5/15/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 5/15/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| HFPO-DA | 5/15/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NEtFOSAA | 5/15/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/15/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFTA | 5/15/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHpS | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 5/15/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 5/15/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 5/15/2023 | 7.00 ppt | 5.00 ppt | Detected |
| ADONA | 5/15/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 5/15/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| NMeFOSAA | 5/15/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFBS | 2/21/2023 | 4.30 ppt | 3.00 ppt | Detected |
| 8:2 FTS | 2/21/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMBA | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 2/21/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 2/21/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 2/21/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTA | 2/21/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| NMeFOSAA | 2/21/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 2/21/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 2/21/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFOA | 2/21/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 2/21/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
UCMR5 PFAS record for Dcwa Calomet Valley (1850009)
Open EPA SDWIS federal reports for PWS SC1850009 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS
What to do with Dcwa Calomet Valley
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in South Carolina compares on the same EPA violation measures. South Carolina systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.