Rockbridge S/d
EPA ID: NC4092073 · 1,042 people served · 7 ZIP codes
With 19 unresolved EPA violations, Rockbridge S/d is currently out of full compliance — approximately 1,042 people in its service area.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 11 (2022) to 19 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Rockbridge S/d Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Rockbridge S/d serves a community with a median household income of $94,167 and an estimated 221,583 residents across its service area.
💧 Where Does Your Water Come From?
Rockbridge S/d's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Orange County, North 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 Rockbridge S/d compares to EPA limits
What This Means For You
Lead at 3 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Total Trihalomethanes (TTHM) at 4 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Stage 2 DBP Rule at 8 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 8 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 7 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. 22 detections recorded. 10 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Rockbridge S/d (EPA ID: NC4092073) is a community water system in North Carolina that serves approximately 1,042 people from groundwater sources.
This system provides water to 7 ZIP codes across 3 communities.
Average Home Safety Score: B (77/100)
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 |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 1, 2025 | Combined Radium | Monitoring | Resolved |
| March 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| March 1, 2025 | Revised Total Coliform Rule | Monitoring | Resolved |
| February 14, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| February 6, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| February 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| February 1, 2025 | Revised Total Coliform Rule | Monitoring | Resolved |
| January 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Unresolved |
| December 5, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| January 1, 2024 | Stage 1 DBP Rule | Monitoring | Resolved |
| January 1, 2024 | Radium-228 | Monitoring | Unresolved |
| July 11, 2023 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 1, 2023 | Combined Radium | Health-based | Resolved |
| April 1, 2023 | Combined Radium | Health-based | Resolved |
| January 1, 2023 | Combined Radium | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 8 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 8 | No |
| Lead and Copper Rule | Treatment Failure | 7 | No |
| Gross Alpha | Radionuclides | 6 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 6 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 4 | No |
| Combined Radium | Radionuclides | 4 | Yes |
| Stage 1 DBP Rule | Treatment Failure | 4 | No |
| Lead | Inorganic | 3 | No |
| Revised Total Coliform Rule | Microbiological | 3 | No |
| Radium-228 | Radionuclides | 1 | No |
Health Risk Details
Gross Alpha Particle Activity (EPA limit: pCi/L)
Increased cancer risk from radioactive particles At-risk groups: long-term residents in areas with uranium or radium-rich geology, people on private wells in western US.
Removal methods: reverse osmosis, ion exchange (anion exchange for radium), lime softening. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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: 2 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 5 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 27514 — Chapel Hill
- 27515 — Chapel Hill
- 27516 — Chapel Hill
- 27517 — Chapel Hill
- 27545 — Knightdale
- 27599 — Chapel Hill
- 27610 — Raleigh
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Rockbridge S/d (NC4092073) on EPA.gov.
Frequently Asked Questions
Is Rockbridge S/d water safe to drink?
Rockbridge S/d has recorded 10 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 Rockbridge S/d serve?
Rockbridge S/d serves approximately 1,042 people across 7 ZIP codes in North Carolina.
Where does Rockbridge S/d get its water?
The primary water source is groundwater.
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
Rockbridge S/d (EPA ID: NC4092073) — request the latest Consumer Confidence Report or ask about specific contaminants.