Gwinnett Company Department of Water Resources
EPA ID: GA1350004 · 975,000 people served · 35 ZIP codes
Not yet resolved: 3 EPA violations at Gwinnett Company Department of Water Resources, affecting about 975,000 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 8 (2022) to 2 (2023). Violation counts have remained relatively steady.
Service Area Map
Coverage area for Gwinnett Company Department of Water Resources Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Gwinnett Company Department of Water Resources serves a community with a median household income of $89,484 and an estimated 1,359,290 residents across its service area.
🌊 Where Does Your Water Come From?
Gwinnett Company Department of Water Resources'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 Barrow County, Georgia 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 Gwinnett Company Department of Water Resources compares to EPA limits
What This Means For You
Arsenic at 1 mg/L exceeds the EPA maximum of 0.01 mg/L.
Consumer Confidence Report Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Total Coliform at 1 presence exceeds the EPA maximum of presence.
Stage 1 DBP 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. 29 detections recorded. 12 exceed federal EPA limits (4 ppt for PFOA/PFOS). 12 exceed state limits.
Comparable Water Systems
Similar-sized systems in Georgia
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
GWINNETT CO. DEPT. OF WATER RESOURCES (EPA ID: GA1350004) is a community water system in Georgia that serves approximately 975,000 people from surface water sources.
This system provides water to 35 ZIP codes across 20 communities.
Average Home Safety Score: C (60/100)
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 |
|---|---|---|---|
| September 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| August 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Resolved |
| July 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Resolved |
| August 23, 2023 | Total Coliform | Monitoring | Unresolved |
| July 1, 2023 | Surface Water Treatment Rule | Monitoring | Unresolved |
| January 1, 2023 | Arsenic | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting Failure | 3 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Arsenic | Inorganic | 1 | No |
| Total Coliform | Microbiological | 1 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Lead and Copper Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 30542 | 0.012 mg/L | No | N/A |
| 30071 | 0.0045 mg/L | No | N/A |
| 30340 | 0.0014 mg/L | No | N/A |
| 30360 | 0.0014 mg/L | No | N/A |
| 30042 | 0.0012 mg/L | No | N/A |
| 30043 | 0.0012 mg/L | No | N/A |
| 30044 | 0.0012 mg/L | No | N/A |
| 30045 | 0.0012 mg/L | No | N/A |
| 30046 | 0.0012 mg/L | No | N/A |
| 30049 | 0.0012 mg/L | No | N/A |
| 30515 | 0.0012 mg/L | No | N/A |
| 30518 | 0.0012 mg/L | No | N/A |
| 30519 | 0.0012 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High 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: 29 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 6 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.
This system serves 35 ZIP codes:
30011 · 30017 · 30019 · 30024 · 30026 30029 · 30039 · 30042 · 30043 · 30044 30045 · 30046 · 30047 · 30049 · 30052 30058 · 30071 · 30078 · 30084 · 30087 30092 · 30093 · 30096 · 30097 · 30099 30340 · 30350 · 30360 · 30515 · 30517 30518 · 30519 · 30542 · 30548 · 30620
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Gwinnett Company Department of Water Resources (GA1350004) on EPA.gov.
Frequently Asked Questions
Is Gwinnett Company Department of Water Resources water safe to drink?
Gwinnett Company Department of Water Resources has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Gwinnett Company Department of Water Resources serve?
Gwinnett Company Department of Water Resources serves approximately 975,000 people across 35 ZIP codes in Georgia.
Where does Gwinnett Company Department of Water Resources get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
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
Gwinnett Company Department of Water Resources (EPA ID: GA1350004) — request the latest Consumer Confidence Report or ask about specific contaminants.