- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 2 of 2 samples, average 435 µg/L, highest 440 µg/L (EPA UCMR 5 testing, Nov 2024–May 2025)
- Lead: 9 in 10 homes tested came in at or below 1 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, 2024–Dec 31, 2024). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
Public EPA test results
Can you drink Vermillion tap water? What EPA records show
EPA system ID SD4600342 · serves Vermillion, SD · about 11,695 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
Vermillion (EPA SD4600342)
EPA data as of October 14, 2026. For Vermillion's main utility, Vermillion: We found no health-standard violations in EPA's records for this system (SD4600342) since July 1, 2021, as of October 14, 2026. PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing. This is public data, not a test of your tap.
What EPA records show for Vermillion, as of October 14, 2026
We found no health-standard violations in EPA's records for this system (SD4600342) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Vermillion (SDWIS). Data as of October 14, 2026.
Lead: 9 in 10 homes tested came in at or below 1 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, 2024–Dec 31, 2024). 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 1.
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 Vermillion use chloramine?
We didn't find chloramine in Vermillion's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.