Water report · not indexed
What is in the water at 30188
3 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
CHEROKEE COUNTY
PWSID GA0570002 · GA · serves 224,427 people
PFAS and lithium
Sampled, nothing detected. Tested for 30 compounds under UCMR 5 with none found at or above its reporting limit. A reporting limit is the lowest concentration the method can measure, so this means “below that” rather than “zero”.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 41 mg/L as CaCO₃, measured at 6 stations serving this system across 317 results, 2015-01-22 to 2026-04-20. Measured in the water source and distribution area, not at a tap, and not in your home.
WOODSTOCK
PWSID GA0570003 · GA · serves 19,742 people
PFAS and lithium
6 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 26 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFBS | 0.0074 µg/L | 6 | 7/12/2023 |
| PFOA | 0.0068 µg/L | 5 | 7/12/2023 |
| PFOS | 0.0053 µg/L | 2 | 7/12/2023 |
| PFPeA | 0.0051 µg/L | 4 | 7/12/2023 |
| PFHxA | 0.0047 µg/L | 6 | 7/12/2023 |
| PFHxS | 0.004 µg/L | 3 | 7/12/2023 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 71 mg/L as CaCO₃, measured at 2 stations serving this system across 136 results, 2015-01-22 to 2026-04-06. Measured in the water source and distribution area, not at a tap, and not in your home.
COBB COUNTY
PWSID GA0670003 · GA · serves 695,000 people
PFAS and lithium
3 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 6 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFBA | 0.0065 µg/L | 1 | 8/7/2023 |
| PFBS | 0.0042 µg/L | 4 | 8/7/2023 |
| PFHxA | 0.0032 µg/L | 1 | 2/5/2024 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 31 mg/L as CaCO₃, measured at 4 stations serving this system across 281 results, 2015-01-06 to 2026-05-27. Measured in the water source and distribution area, not at a tap, and not in your home.
What this report cannot tell you
Every figure describes water at a sampling point: a treatment plant, an entry point to the distribution system, or a monitoring station. None of it describes water arriving at your tap. Plumbing between the two can add lead and copper, and if your home was built before 1986 a test kit tells you something no federal dataset can.
Sources: EPA UCMR 5 occurrence (final release, frozen July 2026) · EPA SDWIS health-based violations · USGS and state monitoring via the Water Quality Portal · EPA Public Water System Service Area Boundaries v3. Compiled 2026-09-01.