Drinking water quality · 2024
· Verified
What's in City of Roswell, GA tap water
5 contaminants were measured in the City of Roswell, GA water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 5
- Over federal limit
- 0
- Approaching the limit
- 1
- Service area
- GA
PFAS — EPA UCMR5 (2023–2025)
3 PFAS compounds detected in City of Roswell, GA
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFPeA
● Detected (no federal limit)below national p90 (15.95999999999999 ng/L across detecting U.S. systems)
PFBS
● Detected (no federal limit)below national p90 (13.909999999999979 ng/L across detecting U.S. systems)
PFHxA
● Detected (no federal limit)below national p90 (12.190000000000003 ng/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
City of Roswell, GA's drinking water comes from surface water, drawn from 2 sources.
Source
- BIG CREEK
- WELL
Treatment
- ROSWELL WATER PLANT
- WELL #1 PLANT
Distribution
Also buys water from ATLANTA-FULTON COUNTY WATER RESOURCES.
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 73.2 ug/LAverageLevel Detected Average | 80 ug/LMCL | Approaching the limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 1.62 mg/LMaximumSystem-wide | 4 mg/LMRDL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 1.9 ug/L90th percentileAt the tap | 15 ug/LMCLG | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.49MaximumSystem-wide | 10MRDL | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0Highest single sampleNumber of Positive Samples Reported | 0MCL | None detected |
People also ask about City of Roswell, GA's water
+Is City of Roswell, GA tap water safe to drink in 2024?
Every one of the 5 contaminants measured in City of Roswell, GA's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in City of Roswell, GA tap water?
5 contaminants were measured in City of Roswell, GA's 2024 Consumer Confidence Report, spanning disinfectants, disinfection byproducts, and inorganic chemicals. 5 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Are any contaminants in City of Roswell, GA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: TTHM. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from City of Roswell, GA's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is City of Roswell, GA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.