Is OAK LAKE MAINTENANCE, INC. required to publish a Consumer Confidence Report?

Yes. OAK LAKE MAINTENANCE, INC. 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 OAK LAKE MAINTENANCE, INC.’s next Consumer Confidence Report due?

OAK LAKE MAINTENANCE, INC.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

WHITTEMORE, IA · Kossuth County

OAK LAKE MAINTENANCE, INC. Water System

Consumer Confidence Report status

OAK LAKE MAINTENANCE, INC. 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 OAK LAKE MAINTENANCE, INC..

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): IA5500838
System type: Community Water System
Population served: 128
Service connections: 53
Ownership: privately owned
Water source: groundwater (wells)

OAK LAKE MAINTENANCE, INC. is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 128 people from groundwater.

As of August 1, 2026, its federal record holds 10 entries between 1980 and 2019, all of which EPA lists as closed. Nothing has been added since 2019.

All 10 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, synthetic organic chemicals, and the Total Coliform Rules.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2019 – June 30, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2018 – August 31, 2018
Resolved
Monitoring, Regular
—
Simazine
October 1, 2008 – September 30, 2014
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2008 – September 30, 2014
Resolved
Monitoring, Regular
—
Nitrate
October 1, 1995 – September 30, 1996
Resolved
Monitoring, Regular
—
LASSO
July 1, 1995 – July 31, 1995
Resolved
Monitoring, Regular
—
Nitrate
October 1, 1991 – September 30, 1994
Resolved
Monitoring, Regular
—
Nitrate
June 24, 1982 – June 23, 1985
Archived
Monitoring, Regular
—
Barium
September 30, 1980 – September 29, 1983
Archived
Monitoring, Regular
—
Chromium
September 30, 1980 – September 29, 1983
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
June 1, 2019 – June 30, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2018 – August 31, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2008 – September 30, 2014	Monitoring, Regular	Simazine	—	Resolved
October 1, 2008 – September 30, 2014	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 1995 – September 30, 1996	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1995 – July 31, 1995	Monitoring, Regular	LASSO	—	Resolved
October 1, 1991 – September 30, 1994	Monitoring, Regular	Nitrate	—	Resolved
June 24, 1982 – June 23, 1985	Monitoring, Regular	Nitrate	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Barium	—	Archived
September 30, 1980 – September 29, 1983	Monitoring, Regular	Chromium	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

September 30, 2019State Public Notification received2 linked violations
July 18, 2019State Public Notification requested2 linked violations
December 27, 2018State Public Notification received2 linked violations
September 24, 2018State Formal Notice of Violation issued1 linked violation
June 15, 2015State Public Notification received2 linked violations
June 15, 2015State Public Notification received2 linked violations
June 15, 2015State Public Notification received2 linked violations
November 24, 2014State Compliance achieved5 linked violations
November 18, 2014State Formal Notice of Violation issued2 linked violations
November 18, 2014State Formal Notice of Violation issued3 linked violations
November 18, 2014State Public Notification requested9 linked violations
November 3, 2005State Public Notification received1 linked violation
October 28, 2005State Public Notification requested2 linked violations
December 1, 1997State Compliance achieved3 linked violations
December 1, 1997State Compliance achieved3 linked violations
November 18, 1997State Compliance achieved1 linked violation
September 4, 1997State Formal Notice of Violation issued2 linked violations
September 4, 1997State Public Notification requested2 linked violations
September 4, 1997State Public Notification requested1 linked violation
September 4, 1997State Formal Notice of Violation issued1 linked violation
September 4, 1997State Public Notification requested1 linked violation
September 4, 1997State Public Notification requested5 linked violations
September 4, 1997State Public Notification requested3 linked violations
September 4, 1997State Formal Notice of Violation issued2 linked violations
September 4, 1997State Public Notification requested2 linked violations
September 4, 1997State Public Notification requested1 linked violation
July 6, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
July 6, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 18, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Common questions

Is OAK LAKE MAINTENANCE, INC. required to publish a Consumer Confidence Report?: Yes. OAK LAKE MAINTENANCE, INC. 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 OAK LAKE MAINTENANCE, INC.’s next Consumer Confidence Report due?: OAK LAKE MAINTENANCE, INC.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OAK LAKE MAINTENANCE, INC. have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for OAK LAKE MAINTENANCE, INC..
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

OAK LAKE MAINTENANCE

515-320-1122

WHITTEMORE, IA 50598