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Community Water System · PWS SC4350016

Sumter-Wessex S/D (Sc4350016)

Sumter, South Carolina 29151-1449 - drinking water served from groundwater sources to 412 people, tracked in EPA SDWIS and UCMR5.

412
People served
73
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 73 drinking-water violations at Sumter-Wessex S/D (Sc4350016) - above the South Carolina per-system average.

73
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
412
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sumter-Wessex S/D (Sc4350016)

Sumter-Wessex S/D (Sc4350016) is a local-owned community water system that delivers drinking water to 412 residents in Sumter, South Carolina (Sumter County) through 119 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 73 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 65 monitoring and reporting violations are on file. The most recent violation on record dates to 2009.

The most frequently cited contaminant at this system is Benzene, recorded in 4 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across South Carolina, EPA tracks 1,390 public water systems serving 4,709,324 people, with 38,355 cumulative violations and 9,705 health-based violations on record. About 65% of systems in the state carry at least one violation, and state-wide the average per system is 27.6 violations. Statewide, 107 of 164 UCMR5-tested systems have reported PFAS detections (65.2%).

Sumter-Wessex S/D (Sc4350016)'s 73 violations sit above the South Carolina average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
412
Total Violations
73
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
119
County
Sumter
School/Daycare
No
MCL Violations
0
Monitoring Violations
65
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Benzene MR 4 1992
1,2-Dichloroethane MR 4 1992
Trichloroethylene MR 4 1992
p-Dichlorobenzene MR 4 1992
1,1-Dichloroethylene MR 4 1992
Vinyl chloride MR 4 1992
Carbon tetrachloride MR 4 1992
1,1,1-Trichloroethane MR 4 1992
Consumer Confidence Rule Other 3 2009
Chlorine MR 3 2004
Tetrachloroethylene MR 2 1992
1,1,2-Trichloroethane MR 2 1992
Toluene MR 2 1992
Ethylbenzene MR 2 1992
o-Dichlorobenzene MR 2 1992
1,2,4-Trichlorobenzene MR 2 1992
cis-1,2-Dichloroethylene MR 2 1992
CHLOROBENZENE MR 2 1992
trans-1,2-Dichloroethylene MR 2 1992
1,2-DIBROMO-3-CHLOROPROPANE MR 2 1992
ETHYLENE DIBROMIDE MR 2 1992
1,2-Dichloropropane MR 2 1992
DICHLOROMETHANE MR 2 1992
Styrene MR 2 1992
Coliform (TCR) MR 2 2004

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Sumter-Wessex S/D (Sc4350016).

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID SC4350016 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

South Carolina Drinking Water Authority

South Carolina's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find SC regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2009 Consumer Confidence Rule Other 3 SDWIS / SC4350016 / 7000
2004 Chlorine MR 3 SDWIS / SC4350016 / 0999
2004 Coliform (TCR) MR 2 SDWIS / SC4350016 / 3100
1992 Benzene MR 4 SDWIS / SC4350016 / 2990
1992 1,2-Dichloroethane MR 4 SDWIS / SC4350016 / 2980
1992 Trichloroethylene MR 4 SDWIS / SC4350016 / 2984
1992 p-Dichlorobenzene MR 4 SDWIS / SC4350016 / 2969
1992 1,1-Dichloroethylene MR 4 SDWIS / SC4350016 / 2977
1992 Vinyl chloride MR 4 SDWIS / SC4350016 / 2976
1992 Carbon tetrachloride MR 4 SDWIS / SC4350016 / 2982
1992 1,1,1-Trichloroethane MR 4 SDWIS / SC4350016 / 2981
1992 Tetrachloroethylene MR 2 SDWIS / SC4350016 / 2987
1992 1,1,2-Trichloroethane MR 2 SDWIS / SC4350016 / 2985
1992 Toluene MR 2 SDWIS / SC4350016 / 2991
1992 Ethylbenzene MR 2 SDWIS / SC4350016 / 2992

How Sumter-Wessex S/D (Sc4350016) Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Sumter-Wessex S/D (Sc4350016) South Carolina avg Federal benchmark
Total violations 73 27.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 65.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 412 3,388 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,390 regulated public water systems in South Carolina.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Sumter-Wessex S/D (Sc4350016) water safe to drink? ▼
Sumter-Wessex S/D (Sc4350016) (PWS ID: SC4350016) has 73 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 412 people using Groundwater sources.
How many people does Sumter-Wessex S/D (Sc4350016) serve? ▼
Sumter-Wessex S/D (Sc4350016) serves 412 people in Sumter, South Carolina. It is a Local-owned system using Groundwater water sources with 119 service connections.
What type of violations does Sumter-Wessex S/D (Sc4350016) have? ▼
Sumter-Wessex S/D (Sc4350016) has 73 total violations: 0 health-based violations (MCL exceedances or treatment failures), 65 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sumter-Wessex S/D (Sc4350016) water? ▼
No PFAS testing data is available for Sumter-Wessex S/D (Sc4350016) under the EPA's UCMR5 monitoring program.
What water source does Sumter-Wessex S/D (Sc4350016) use? ▼
Sumter-Wessex S/D (Sc4350016) uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.