- EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
- Lithium: found in 4 of 4 samples, average 82.3 µg/L, highest 100 µg/L (EPA UCMR 5 testing, Jan 2023–Oct 2023)
- PFBA (a PFAS): found in 3 of 4 samples, average 5.5 ppt, highest 8.1 ppt (EPA UCMR 5 testing, Jan 2023–Oct 2023)
Public EPA test results
What EPA records show for Aberdeen
EPA system ID SD4600020 · serves Aberdeen, SD · about 27,989 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Aberdeen (EPA SD4600020)
What EPA records show for Aberdeen, as of October 14, 2026
7 health-standard violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 3 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2025–Jun 30, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 2.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Aberdeen use chloramine?
We didn't find chloramine in Aberdeen's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)