Community Water System · PWS SC0920002
Upper Calhoun/Sandy Run (Sc0920002)
Operator location Gaston, South Carolina - 0% of 34 violations are health-based (lower-third health share (≤ 1%)); groundwater source; 1,247 served per SDWIS.
- 1,247
- People served (this PWS)
- 34
- EPA violations (this PWS)
- 0
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Upper Calhoun/Sandy Run (Sc0920002) standing, mid SDWIS violation third
0% of 34 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%). Population rank #17,510 of 29,740 among systems serving 500+.
The verdict
Upper Calhoun/Sandy Run (Sc0920002) lands in the middle third by violation volume (34), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,247 (mid served population (≤ 3,309)). Health-based share is only 0% - almost all of this trail is monitoring or reporting. No UCMR5 PFAS test appears for this system in this extract.
- #17,510 of 29,740
- Population · /systems
- #229 of 314
- Population · SC
- 34
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 611
- County
- Calhoun
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 33
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 4 | 2013 |
| Coliform (TCR) | MR | 3 | 2012 |
| E. COLI | MR | 3 | 2025 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 1 | 2010 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 1991 |
| Styrene | MR | 1 | 1991 |
| 1,1-Dichloroethylene | MR | 1 | 1991 |
| Toluene | MR | 1 | 1991 |
| 1,2,4-Trichlorobenzene | MR | 1 | 1991 |
| p-Dichlorobenzene | MR | 1 | 1991 |
| cis-1,2-Dichloroethylene | MR | 1 | 1991 |
| Trichloroethylene | MR | 1 | 1991 |
| o-Dichlorobenzene | MR | 1 | 1991 |
| Ethylbenzene | MR | 1 | 1991 |
| 1,2-Dichloroethane | MR | 1 | 1991 |
| trans-1,2-Dichloroethylene | MR | 1 | 1991 |
| 1,1,2-Trichloroethane | MR | 1 | 1991 |
| CHLOROBENZENE | MR | 1 | 1991 |
| Tetrachloroethylene | MR | 1 | 1991 |
| 1,2-Dichloropropane | MR | 1 | 1991 |
| DICHLOROMETHANE | MR | 1 | 1991 |
| ETHYLENE DIBROMIDE | MR | 1 | 1991 |
| 1,1,1-Trichloroethane | MR | 1 | 1991 |
| Vinyl chloride | MR | 1 | 1991 |
| Carbon tetrachloride | MR | 1 | 1991 |
| Benzene | MR | 1 | 1991 |
Violation Count vs. the National Corpus
Upper Calhoun/Sandy Run (Sc0920002) has 34 recorded EPA violations, 46% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 54% carry more. 0% of this system's own violations are health-based (0 of 34), and it ranks #17,510 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
34 Lower than most fewer violations than 54% 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
Health-based violations on Upper Calhoun/Sandy Run (Sc0920002)
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for SC0920002.
Sources: EPA SDWIS
Nationwide peers
34 violations · 1,247 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Upper Calhoun/Sandy Run
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.