Is DELHI WATER SUPPLY required to publish a Consumer Confidence Report?

Yes. DELHI 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 DELHI WATER SUPPLY’s next Consumer Confidence Report due?

DELHI WATER SUPPLY’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.

DELHI, IA · Delaware County

DELHI WATER SUPPLY Water System

Consumer Confidence Report status

DELHI 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 DELHI 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): IA2817020
System type: Community Water System
Population served: 420
Service connections: 270
Ownership: local government
Water source: groundwater (wells)

DELHI WATER SUPPLY is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, serving 420 people from groundwater.

As of August 1, 2026, its federal record holds 53 entries between 1994 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 53, 52 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 volatile organic chemicals, synthetic organic chemicals, and inorganic chemicals.

Violation history

Monitoring, Regular
—
Nitrate
October 1, 2022 – December 31, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2021 – May 31, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – October 5, 2011
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Styrene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Picloram
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
LASSO
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Simazine
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Benzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Styrene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Benzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2007 – June 30, 2013
Resolved
Monitoring, Regular
—
Nitrate
October 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1996 – March 31, 1996
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 1995 – September 30, 1995
Resolved
Monitoring, Regular
—
Nitrate
April 1, 1994 – April 30, 1994
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2022 – December 31, 2022	Monitoring, Regular	Nitrate	—	Resolved
May 1, 2021 – May 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2011 – October 5, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Styrene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Picloram	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	LASSO	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Simazine	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Benzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Styrene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	Benzene	—	Resolved
July 1, 2007 – June 30, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
October 1, 2000 – December 31, 2000	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1996 – March 31, 1996	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 1995 – September 30, 1995	Monitoring, Regular	Xylenes, Total	—	Resolved
April 1, 1994 – April 30, 1994	Monitoring, Regular	Nitrate	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 19, 2023State Formal Notice of Violation issued2 linked violations
January 9, 2023State Compliance achieved2 linked violations
September 2, 2021State Public Notification received2 linked violations
June 17, 2021State Public Notification requested2 linked violations
June 8, 2016State Public Notification received2 linked violations
April 20, 2016State Public Notification requested2 linked violations
April 20, 2016State Formal Notice of Violation issued2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received7 linked violations
July 28, 2014State Public Notification received3 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
July 28, 2014State Public Notification received2 linked violations
August 21, 2013State Formal Notice of Violation issued2 linked violations
August 21, 2013State Public Notification requested4 linked violations
August 21, 2013State Public Notification requested7 linked violations
August 21, 2013State Formal Notice of Violation issued3 linked violations
August 21, 2013State Public Notification requested2 linked violations
August 21, 2013State Formal Notice of Violation issued2 linked violations
August 21, 2013State Public Notification requested2 linked violations
August 21, 2013State Public Notification requested2 linked violations
August 21, 2013State Public Notification requested7 linked violations
August 21, 2013State Formal Notice of Violation issued4 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Public Notification requested4 linked violations
August 21, 2013State Formal Notice of Violation issued7 linked violations
August 21, 2013State Formal Notice of Violation issued3 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Formal Notice of Violation issued3 linked violations
August 21, 2013State Formal Notice of Violation issued3 linked violations
August 21, 2013State Formal Notice of Violation issued2 linked violations
August 21, 2013State Formal Notice of Violation issued3 linked violations
August 21, 2013State Formal Notice of Violation issued2 linked violations
August 21, 2013State Public Notification requested2 linked violations
August 21, 2013State Formal Notice of Violation issued31 linked violations
August 21, 2013State Formal Notice of Violation issued31 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Public Notification requested7 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Public Notification requested4 linked violations
August 21, 2013State Formal Notice of Violation issued6 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Formal Notice of Violation issued10 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Formal Notice of Violation issued3 linked violations
August 21, 2013State Public Notification requested3 linked violations
August 21, 2013State Public Notification requested2 linked violations
August 21, 2013State Formal Notice of Violation issued2 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved6 linked violations
July 8, 2013State Compliance achieved4 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved4 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved4 linked violations
July 8, 2013State Compliance achieved5 linked violations
July 8, 2013State Compliance achieved3 linked violations
July 8, 2013State Compliance achieved6 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved2 linked violations
July 8, 2013State Compliance achieved4 linked violations
July 8, 2013State Compliance achieved4 linked violations
March 5, 2001State Public Notification received31 linked violations
June 2, 1999State Public Notification received3 linked violations
April 23, 1999State Public Notification requested4 linked violations
July 22, 1996State Public Notification requested2 linked violations
July 22, 1996State Public Notification requested2 linked violations
July 22, 1996State Formal Notice of Violation issued2 linked violations
June 10, 1996State Compliance achieved2 linked violations
June 10, 1996State Compliance achieved3 linked violations
November 22, 1995State Public Notification requested6 linked violations
November 22, 1995State Public Notification requested2 linked violations
November 22, 1995State Public Notification requested2 linked violations
November 22, 1995State Formal Notice of Violation issued5 linked violations
November 22, 1995State Public Notification requested5 linked violations

Common questions

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

DELHI WATER SUPPLY

563-929-6978

DELHI, IA 52223