What was found in ZIP 30188
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| PFBS | 0.0042 µg/L No EPA limit set Main supplier: COBB COUNTY · 695,000 people · 2024
Highest in the ZIP: 0.0074 µg/L — WOODSTOCK · 19,742 people · 2024 | 2/3 | UCMR-5 |
| PFOA | 0.0068 µg/L No EPA limit set Highest in the ZIP: WOODSTOCK · 19,742 people · 2024 | 1/3 | UCMR-5 |
| Pfba | 0.0065 µg/L No EPA limit set Main supplier: COBB COUNTY · 695,000 people · 2024 | 1/3 | UCMR-5 |
| PFOS | 0.0053 µg/L No EPA limit set Highest in the ZIP: WOODSTOCK · 19,742 people · 2024 | 1/3 | UCMR-5 |
| Pfpea | 0.0051 µg/L No EPA limit set Highest in the ZIP: WOODSTOCK · 19,742 people · 2024 | 1/3 | UCMR-5 |
| Pfhxa | 0.0032 µg/L No EPA limit set Main supplier: COBB COUNTY · 695,000 people · 2024
Highest in the ZIP: 0.0047 µg/L — WOODSTOCK · 19,742 people · 2024 | 2/3 | UCMR-5 |
| PFHXS | 0.0040 µg/L No EPA limit set Highest in the ZIP: WOODSTOCK · 19,742 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0026 mg/L 17% of the EPA limit 0.0150 mg/L Main supplier: COBB COUNTY · 695,000 people · 2003 | 3/3 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 30188
| Supplier | State | Population served |
|---|---|---|
| COBB COUNTY | GA | 695,000 |
| CHEROKEE COUNTY | GA | 224,427 |
| WOODSTOCK | GA | 19,742 |
Frequently asked questions about ZIP 30188 tap water
Is the tap water in ZIP 30188 safe to drink?
EPA testing detected 8 contaminants across the water suppliers serving ZIP 30188. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 30188?
3 public water suppliers report EPA drinking-water monitoring for ZIP 30188. Each is listed above with its population served.
What contaminants are in ZIP 30188's water?
EPA monitoring detected PFBS, PFOA, Pfba, PFOS, Pfpea, and others across this ZIP's suppliers. The full list with levels and sources is above.