IA / Rockwell City
IA · Tap water records
Rockwell City tap water, in plain English
Here is what the EPA's own data shows about tap water in Rockwell City. According to EPA SDWIS data retrieved June 2026, Rockwell City is served by 2 active community water systems, together reported to serve about 2,550 people.
As of June 2026, EPA records show 10 violations across the community water system(s) serving Rockwell City, going back to the earliest EPA record. 2 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Rockwell City Water Supply
2,250 served · groundwater · PWSID IA1376098 - Health-based contaminant code null: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 2 times in October 2016. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in July 2024. All have since returned to compliance, per EPA records.
- Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2016. All have since returned to compliance, per EPA records.
Twin Lakes Utilities
300 served · groundwater · PWSID IA1300101 - Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between March 2022 and December 2023. All have since returned to compliance, per EPA records.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.