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EPA ID GA1210001 · checked 16 Oct 2026

Atlanta tap water: what EPA testing found

City of Atlanta (EPA record: ATLANTA) serves 1,089,893 people in GA from surface water.

What the data shows

PFAS and lithium (EPA UCMR 5)

360 results from 3 sampling points, 25 Apr 2023 to 10 Jan 2024. Averages count results below EPA’s reporting level as zero, as the PFAS rule does. Every number links to EPA’s UCMR 5 Data Finder (search PWSID GA1210001). Limits: EPA PFAS rule.

ContaminantDetected inHighest resultAverageEPA limit
PFOA0 of 12not detected0 ng/L4 ng/L
PFOS0 of 12not detected0 ng/L4 ng/L
PFHxS0 of 12not detected0 ng/L10 ng/L*
PFNA0 of 12not detected0 ng/L10 ng/L*
HFPO-DA0 of 12not detected0 ng/L10 ng/L*
PFBS3 of 124.6 ng/L0.93 ng/Lnone
PFBA2 of 128.3 ng/L1.23 ng/Lnone
PFHxA6 of 124.6 ng/L1.94 ng/Lnone
PFPeA6 of 124.8 ng/L1.95 ng/Lnone
Lithium0 of 12not detected0 µg/Lnone (screening level 10 µg/L)

* PFHxS, PFNA and HFPO-DA limits (and the PFAS hazard index) are in the rule, but EPA proposed on 20 May 2026 to rescind them; not final as of 16 Oct 2026. UCMR 5 results are screening data, not compliance results: compliance uses quarterly running averages from 2029. Source file: EPA UCMR 5 occurrence data (dated 15 Oct 2026).

Health-based violations since 2016

Period beganContaminant or ruleViolationMeasuredStatus
1 Apr 2019Total Haloacetic Acids (HAA5)Maximum Contaminant Level Violation, Average0.07 mg/lReturned to Compliance (24 Jul 2019)
1 Jan 2019Total Haloacetic Acids (HAA5)Maximum Contaminant Level Violation, Average0.06 mg/lReturned to Compliance (24 Jul 2019)
1 Oct 2018Total Haloacetic Acids (HAA5)Maximum Contaminant Level Violation, Average0.06 mg/lReturned to Compliance (24 Jul 2019)
1 Jul 2018Total Haloacetic Acids (HAA5)Maximum Contaminant Level Violation, Average0.06 mg/lReturned to Compliance (24 Jul 2019)
1 Oct 2017TTHMMaximum Contaminant Level Violation, Average0.08 mg/lReturned to Compliance (31 Jan 2018)

Source: EPA SDWIS via Envirofacts and the ECHO report for GA1210001, retrieved 16 Oct 2026.

Hardness

The utility’s latest water report doesn’t publish a hardness figure (checked 16 Oct 2026). A home test kit or a call to the utility gives it; then use the softener calculator.

Places and ZIP codes served

Atlanta, Fairburn, Palmetto, Riverdale, Union City.

30213 30268 30291 30296 30303 30305 30306 30307 30308 30309 30310 30311 30312 30313 30314 30315 30316 30317 30318 30319 30320 30324 30326 30327 30328 30331 30336 30337 30339 30342 30349 30350 30354 30363

ZIP codes the system reported to EPA for UCMR 5; place names from GeoNames (CC BY 4.0). A ZIP code can be split between systems.