- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 2 of 2 samples, average 120 µg/L, highest 130 µg/L (EPA UCMR 5 testing, Mar 2024–Sep 2024)
- Lead: 9 in 10 homes tested came in at or below 0 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, 2023–Dec 31, 2025). 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 Storm Lake tap water? What EPA records show
EPA system ID IA1178097 · serves Storm Lake, IA · about 11,431 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
Storm Lake Water Treatment Plant (EPA IA1178097)
EPA data as of October 14, 2026. For Storm Lake's main utility, Storm Lake Water Treatment Plant: We found no health-standard violations in EPA's records for this system (IA1178097) 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.
What EPA records show for Storm Lake Water Treatment Plant, as of October 14, 2026
We found no health-standard violations in EPA's records for this system (IA1178097) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Storm Lake Water Treatment Plant (SDWIS). Data as of October 14, 2026.
Lead: 9 in 10 homes tested came in at or below 0 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, 2023–Dec 31, 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 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 Storm Lake Water Treatment Plant use chloramine?
EPA treatment records (state-reported) list chloramines for Storm Lake Water Treatment Plant. EPA record
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
Sources
- EPA ECHO detailed facility report: Storm Lake Water Treatment Plant (IA1178097), July to September 2026 extract
- EPA SDWIS (ECHO SDWA bulk download), July to September 2026 extract
- EPA UCMR 5 occurrence data, samples through June 2026
Questions people ask
Is Storm Lake tap water safe to drink?
We don't give a safe or unsafe verdict. Here is what the public data shows: EPA records for Storm Lake's main utility, Storm Lake Water Treatment Plant, as of October 14, 2026. We found no health-standard violations in EPA's records for this system (IA1178097) 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. A guideline and a legal limit are different things, and this is public data, not a test of your tap.
Which utility supplies water in Storm Lake?
Storm Lake Water Treatment Plant is the main utility for Storm Lake in EPA's records (EPA IA1178097), serving about 11,431 people (EPA SDWIS). Your water bill names your utility.
Does Storm Lake tap water contain PFAS?
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.
How recent is this data?
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026. Data may be one to three years old and may not reflect the water at your tap. If you want your own tap tested, use a state-certified laboratory.
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