Dekalb County
EPA ID: GA0890001 · 743,000 people served · 48 ZIP codes
ZipCheckup's reading of EPA records for Dekalb County (GA0890001): 1 violation on record since 2021. Per the federal file, all 1 violation logged for Dekalb County carry a resolved status, and around 743,000 people get water from this system.
Data: EPA SDWIS
Service Area Map
Coverage area for Dekalb County Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Dekalb County have a median household income of $77,339 and about 1,445,442 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 52% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 38% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). 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?
Dekalb County'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
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 89 detections recorded. 6 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
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
Dekalb County (EPA ID: GA0890001) is a community water system in Georgia that serves approximately 743,000 people from surface water sources.
This system provides water to 48 ZIP codes across 18 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 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 |
|---|---|---|---|
| July 1, 2021 | Consumer Confidence Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0055 mg/L | No | 2024-12-31 |
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
43 of 48 ZIP records with known zones are in EPA Radon Zone 1. 5 of 48 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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 GA or modeled from parcel and building-footprint data.
This system serves 48 ZIP codes:
30002 · 30012 · 30021 · 30030 · 30032 30033 · 30034 · 30035 · 30038 · 30039 30047 · 30058 · 30072 · 30079 · 30083 30084 · 30087 · 30088 · 30092 · 30093 30094 · 30273 · 30281 · 30288 · 30294 30297 · 30303 · 30306 · 30307 · 30308 30309 · 30312 · 30313 · 30315 · 30316 30317 · 30319 · 30322 · 30324 · 30329 30334 · 30338 · 30340 · 30341 · 30345 30346 · 30350 · 30360
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Dekalb County (GA0890001) on EPA.gov.
Frequently Asked Questions
Is Dekalb County water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Dekalb County; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Dekalb County serve?
Dekalb County serves approximately 743,000 people across 48 ZIP codes in Georgia.
Where does Dekalb County get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
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.
- #17 / 50 Highest Exposure Burden (Georgia)
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Dekalb County (GA): 1 EPA Violation. https://zipcheckup.com/water-system/ga0890001/
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title = {{Dekalb County (GA): 1 EPA Violation}},
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url = {https://zipcheckup.com/water-system/ga0890001/}
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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
Dekalb County (EPA ID: GA0890001) - request the latest Consumer Confidence Report or ask about specific contaminants.