Stone Mountain, GA Water Safety: 53/100 (2026)
4 ZIP codes · 3 water systems · Updated 2026-06-03
Federal monitoring data for Stone Mountain puts the city in GA's lower safety tier — exceedances show up in multiple utility districts, several systems have met thresholds requiring public notification under the Safe Drinking Water Act, and the compliance deficit has persisted across more than one consecutive reporting cycle, with no clear reversal visible in the most recent data available.
How Stone Mountain Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Stone Mountain Water
- Homes built before 1986: 62% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 11.77.
Who Supplies Your Water in Stone Mountain
Residential addresses in Stone Mountain, GA are served by 3 primary water providers out of 3 systems in federal records. Each system maintains separate infrastructure and files its own EPA compliance reports, so service conditions are not uniform across the city.
Overview
We track water quality and home safety data for 4 ZIP codes in Stone Mountain, Georgia (population ~129,790), covering 3 community water systems serving approximately 2,807,893 people region-wide.
No EPA violations recorded across any ZIP codes in Stone Mountain — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Stone Mountain: D (53/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Stone Mountain water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Stone Mountain
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 1 ZIP code
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 30083 | D | DEKALB COUNTY | 743,000 |
| 30086 | C | ATLANTA | 1,089,893 |
| 30087 | D | DEKALB COUNTY | 743,000 |
| 30088 | D | DEKALB COUNTY | 743,000 |
All ZIP Codes in Stone Mountain
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Stone Mountain
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Housing & Infrastructure in Stone Mountain
With 62% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Viewed through the lens of construction era, Stone Mountain is predominantly an older city — a median build year of 1981 puts most of the residential inventory in the range where pre-1986 plumbing materials were the standard.
Over half of homes in Stone Mountain were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Stone Mountain Homeowners
How much of a Stone Mountain home's value does documented remediation represent? A small fraction — the equity share here is in the low tier, and from a household financial perspective, most property owners are considering a commitment that fits comfortably within standard planning rather than a decision that rises to the level of a material budget event or significant equity consideration.
Remediation costs in Stone Mountain are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 1% above the Georgia average.
Lead Exposure Risk for Children in Stone Mountain
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
62% of Stone Mountain housing dates to the pre-rule era, alongside aggregate readings hovering at the federal action mark — household-level confirmation through a draw-test kit fits the local picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Stone Mountain
Flood activity in Stone Mountain is neither negligible nor at the level of the highest-exposure areas in the NFIP dataset. The 217-claim record and 75% flood zone coverage suggest a community that has experienced recurrent events but has not faced the kind of sustained, severe exposure where water-supply contamination becomes a primary public health concern. It sits in a middle range where flood history merits inclusion in any complete local water quality picture.
Stone Mountain has a moderate flood history with 217 FEMA claims averaging $12,039 per payout. 75% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Stone Mountain
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 62% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Stone Mountain, GA