Gsw&sa (sc2620004)
EPA ID: SC2620004 · 247,550 people served · 23 ZIP codes
Within the five-year EPA monitoring span, Gsw&sa (sc2620004) accumulated 4 violations — every finding has been resolved and the utility operates in full compliance today, supplying water to approximately 247,550 people without any active enforcement proceedings.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 91% chance of violation in next 12 months
Violations went from 6 (2021) to 3 (2025). Violation counts have remained relatively steady.
Service Area Map
Coverage area for Gsw&sa (sc2620004) Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Gsw&sa (sc2620004) serves a community with a median household income of $54,232 and an estimated 418,865 residents across its service area. Approximately 41% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 62% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Gsw&sa (sc2620004)'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Horry County, South Carolina rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Gsw&sa (sc2620004) compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 4 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 98 detections recorded. 28 exceed federal EPA limits (4 ppt for PFOA/PFOS). 28 exceed state limits.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in South Carolina
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
GSW&SA (SC2620004) (EPA ID: SC2620004) is a community water system in South Carolina that serves approximately 247,550 people from surface water sources.
This system provides water to 23 ZIP codes across 18 communities.
Average Home Safety Score: C (69/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| April 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 4 | Yes |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 29526 | 0.00056 mg/L | No | N/A |
| 29527 | 0.00056 mg/L | No | N/A |
| 29528 | 0.00056 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 22 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 1 additional ZIP inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 29511 — Aynor
- 29526 — Conway
- 29527 — Conway
- 29528 — Conway
- 29536 — Dillon
- 29543 — Fork
- 29544 — Galivants Ferry
- 29545 — Green Sea
- 29563 — Lake View
- 29565 — Latta
- 29566 — Little River
- 29568 — Longs
- 29569 — Loris
- 29571 — Marion
- 29574 — Mullins
- 29575 — Myrtle Beach
- 29576 — Murrells Inlet
- 29577 — Myrtle Beach
- 29579 — Myrtle Beach
- 29581 — Nichols
- 29582 — North Myrtle Beach
- 29588 — Myrtle Beach
- 29592 — Sellers
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Gsw&sa (sc2620004) (SC2620004) on EPA.gov.
Frequently Asked Questions
Is Gsw&sa (sc2620004) water safe to drink?
Gsw&sa (sc2620004) has recorded 4 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Gsw&sa (sc2620004) serve?
Gsw&sa (sc2620004) serves approximately 247,550 people across 23 ZIP codes in South Carolina.
Where does Gsw&sa (sc2620004) get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Gsw&sa (sc2620004) (EPA ID: SC2620004) — request the latest Consumer Confidence Report or ask about specific contaminants.