WILLIAMS, IA · Hamilton County
WILLIAMS WATER SUPPLY Water System
Consumer Confidence Report status
WILLIAMS WATER SUPPLY 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 WILLIAMS WATER SUPPLY.
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)
- IA4070022
- System type
- Community Water System
- Population served
- 315
- Service connections
- 192
- Ownership
- local government
- Water source
- groundwater (wells)
WILLIAMS WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 315 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 1986 and 2025, all of which EPA lists as closed.
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 Stage 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring, Regular
—Nitrate
April 1, 2025 – March 31, 2026
ArchivedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
May 1, 2022 – May 31, 2022
ResolvedMonitoring, Regular
—Fluoride
July 1, 1986 – June 30, 1989
Resolved
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2025 – March 31, 2026 | Monitoring, Regular | Nitrate | — | Archived |
| May 1, 2022 – May 31, 2022 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| July 1, 1986 – June 30, 1989 | Monitoring, Regular | Fluoride | — | Resolved |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- July 19, 2022State Public Notification requested5 linked violations
- May 22, 1995State Public Notification requested2 linked violations
- January 2, 1990State Formal Notice of Violation issued1 linked violation
- November 14, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- November 14, 1989State Compliance achieved2 linked violations
- June 6, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
Common questions
Is WILLIAMS WATER SUPPLY required to publish a Consumer Confidence Report?
- Yes. WILLIAMS WATER SUPPLY 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 WILLIAMS WATER SUPPLY’s next Consumer Confidence Report due?
- WILLIAMS WATER SUPPLY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WILLIAMS WATER SUPPLY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for WILLIAMS WATER SUPPLY.
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
WILLIAMS WATER SUPPLY
515-854-2260
WILLIAMS, IA 50271