Columbia City of (sc4010001)
EPA ID: SC4010001 · 354,068 people served · 24 ZIP codes
ZipCheckup's reading of EPA SDWIS for Columbia City of (sc4010001) (SC4010001): 2 past health-based violations, since resolved. A total of 2 EPA violations spanning the past five monitoring years sit on Columbia City of (sc4010001)'s record - every finding has been officially cleared, and the supplier now holds current compliance status for its service population of approximately 354,068 people, with no outstanding enforcement of any kind.
Data: EPA SDWIS
Service Area Map
Coverage area for Columbia City of (sc4010001) Source: EPA SDWIS service area boundaries.
Service area boundary - Grade B
Service Area Demographics
The Columbia City of (sc4010001) serves a community with a median household income of $64,427 and an estimated 544,704 residents across its service area. Approximately 47% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 44% 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?
Columbia City of (sc4010001)'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.
Infrastructure Risk
Detected Contaminants
How Columbia City of (sc4010001) compares to EPA limits
What This Means For You
Contaminant 1009 at 1 mg/L exceeds the EPA maximum of 0.004 mg/L. Intestinal damage, bone damage. Consider reverse osmosis filtration.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 147 detections recorded. 44 exceed federal EPA limits (4 ppt for PFOA/PFOS). 44 exceed state limits.
Contaminant 1009 was detected in this water system. reverse osmosis 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
Columbia City of (sc4010001) (EPA ID: SC4010001) is a community water system in South Carolina that serves approximately 354,068 people from surface water sources.
This system provides water to 24 ZIP codes across 13 communities.
ZIP-Area Home Safety Context: B (80/100)
This is the average Home Safety Score for 13 of 24 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| December 1, 2024 | Contaminant 1009 | Health-based | Resolved |
| April 1, 2021 | Consumer Confidence Report Rule | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 1009 | Other Violation | 1 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 1 | Yes |
Health Risk Details
Beryllium (EPA limit: 0.004 mg/L)
Intestinal damage, bone damage At-risk groups: long-term residents, people with gastrointestinal conditions.
Removal methods: reverse osmosis, activated alumina, coagulation/filtration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.005 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by SC or modeled from parcel and building-footprint data.
- 29016 - Blythewood
- 29036 - Chapin
- 29044 - Eastover
- 29045 - Elgin
- 29061 - Hopkins
- 29063 - Irmo
- 29075 - Little Mountain
- 29078 - Lugoff
- 29130 - Ridgeway
- 29169 - West Columbia
- 29177 - White Rock
- 29180 - Winnsboro
- 29201 - Columbia
- 29203 - Columbia
- 29204 - Columbia
- 29205 - Columbia
- 29206 - Columbia
- 29207 - Columbia
- 29208 - Columbia
- 29209 - Columbia
- 29210 - Columbia
- 29212 - Columbia
- 29223 - Columbia
- 29229 - Columbia
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Columbia City of (sc4010001) (SC4010001) on EPA.gov.
Frequently Asked Questions
Is Columbia City of (sc4010001) water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Columbia City of (sc4010001); its 2 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Columbia City of (sc4010001) serve?
Columbia City of (sc4010001) serves approximately 354,068 people across 24 ZIP codes in South Carolina.
Where does Columbia City of (sc4010001) get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below 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 →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Columbia City of (sc4010001) (SC): 2 Health Violations. https://zipcheckup.com/water-system/sc4010001/
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title = {{Columbia City of (sc4010001) (SC): 2 Health Violations}},
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url = {https://zipcheckup.com/water-system/sc4010001/}
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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
Columbia City of (sc4010001) (EPA ID: SC4010001) - request the latest Consumer Confidence Report or ask about specific contaminants.