WATERLOO, IA · Black Hawk County
WATERLOO WATER WORKS Water System
Consumer Confidence Report status
WATERLOO WATER WORKS must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for WATERLOO WATER WORKS.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Iowa’s official records. Always confirm current status with Iowa before making decisions based on this information.
System facts
- System ID (PWSID)
- IA0790074
- System type
- Community Water System
- Population served
- 69,504
- Service connections
- 27,430
- Ownership
- local government
- Water source
- groundwater (wells)
WATERLOO WATER WORKS is among the 7 largest community water systems in Iowa, serving 69,504 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 1985 and 1996, all of which EPA lists as closed. Nothing has been added since 1996.
All 3 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals and the Total Coliform Rules.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
May 1, 1996 – May 31, 1996
ResolvedMonitoring, Regular
—Fluoride
July 1, 1985 – May 23, 1988
ResolvedMonitoring, Regular
—Selenium
July 1, 1985 – May 23, 1988
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| May 1, 1996 – May 31, 1996 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 1985 – May 23, 1988 | Monitoring, Regular | Fluoride | — | Resolved |
| July 1, 1985 – May 23, 1988 | Monitoring, Regular | Selenium | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 11, 2017State Compliance achieved4 linked violations
- November 12, 2015State Public Notification received25 linked violations
- August 17, 2005State Formal Notice of Violation issued7 linked violations
- July 22, 1996State Public Notification requested2 linked violations
- July 12, 1996State Public Notification received1 linked violation
- June 24, 1996State Public Notification requested2 linked violations
- November 9, 1994State Public Notification received3 linked violations
- October 21, 1993State Compliance achieved3 linked violations
- March 10, 1992State Public Notification received7 linked violations
- March 9, 1992State Formal Notice of Violation issued2 linked violations
- May 23, 1988State Compliance achieved1 linked violation
- May 23, 1988State Compliance achieved1 linked violation
Common questions
Is WATERLOO WATER WORKS required to publish a Consumer Confidence Report?
- Yes. WATERLOO WATER WORKS is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is WATERLOO WATER WORKS’s next Consumer Confidence Report due?
- WATERLOO WATER WORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WATERLOO WATER WORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for WATERLOO WATER WORKS.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
WATERLOO WATER WORKS
319-232-6280
WATERLOO, IA 50704-0027