Is WALNUT GROVE MHC required to publish a Consumer Confidence Report?

Yes. WALNUT GROVE MHC 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 WALNUT GROVE MHC’s next Consumer Confidence Report due?

WALNUT GROVE MHC’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.

MARION, IL · Champaign County

WALNUT GROVE MHC Water System

Consumer Confidence Report status

WALNUT GROVE MHC 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 WALNUT GROVE MHC.

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 Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID): IL0195425
System type: Community Water System
Population served: 40
Service connections: 20
Ownership: privately owned
Water source: groundwater (wells)

WALNUT GROVE MHC is one of 1,572 community water systems in Illinois in the 500 or fewer people size category, serving 40 people from groundwater.

As of August 1, 2026, its federal record holds 156 entries between 1991 and 2026, all of which EPA lists as closed.

Of the 156, 154 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 synthetic organic chemicals, volatile organic chemicals, and inorganic chemicals.

Violation history

Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Chlordane
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Pentachlorophenol
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
2,4,5-TP
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
2,4-D
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Heptachlor
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
LASSO
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Atrazine
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Aldicarb
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Carbofuran
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Picloram
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Simazine
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Endothall
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Dalapon
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Toxaphene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Endrin
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Nitrite
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Toluene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Benzene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2026 – March 31, 2026
Archived
Monitoring, Regular
—
2,4-D
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Vinyl chloride
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Xylenes, Total
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
o-Dichlorobenzene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Carbon tetrachloride
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Trichloroethylene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Tetrachloroethylene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Toluene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Ethylbenzene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Nitrate
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Nitrite
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Endrin
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Methoxychlor
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Dalapon
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Diquat
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Endothall
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
OXAMYL
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Simazine
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Picloram
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Dinoseb
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Aldicarb sulfone
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Carbofuran
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Aldicarb
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Atrazine
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
LASSO
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Heptachlor
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
2,4,5-TP
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Pentachlorophenol
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Chlordane
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Xylenes, Total
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Vinyl chloride
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Chlordane
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Nitrate
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Nitrite
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Pentachlorophenol
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
2,4,5-TP
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
2,4-D
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Heptachlor
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
LASSO
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Atrazine
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Aldicarb
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Carbofuran
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Aldicarb sulfone
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Aldicarb sulfoxide
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Dinoseb
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Picloram
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Simazine
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
OXAMYL
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Endothall
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Diquat
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Dalapon
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Toxaphene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Methoxychlor
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
BHC-GAMMA
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Endrin
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Styrene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Ethylbenzene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Toluene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Benzene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Trichloroethylene
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1991 – October 31, 1991
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 25, 1991 – April 24, 1994
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Chlordane	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Pentachlorophenol	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Benzo(a)pyrene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	2,4,5-TP	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	2,4-D	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Heptachlor epoxide	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Heptachlor	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	LASSO	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Atrazine	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Aldicarb	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Carbofuran	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Aldicarb sulfone	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Picloram	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Simazine	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Endothall	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Dalapon	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Toxaphene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Endrin	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Nitrite	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Toluene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Benzene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	Xylenes, Total	—	Archived
January 1, 2026 – March 31, 2026	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	2,4-D	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Vinyl chloride	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Xylenes, Total	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	DICHLOROMETHANE	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	o-Dichlorobenzene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	p-Dichlorobenzene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,2-Dichloroethane	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Carbon tetrachloride	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,2-Dichloropropane	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Trichloroethylene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Tetrachloroethylene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	CHLOROBENZENE	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Toluene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Ethylbenzene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Nitrate	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Nitrite	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Endrin	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Methoxychlor	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Dalapon	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Diquat	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Endothall	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	OXAMYL	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Simazine	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Picloram	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Dinoseb	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Aldicarb sulfone	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Carbofuran	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Aldicarb	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Atrazine	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	LASSO	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Heptachlor	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Heptachlor epoxide	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	2,4,5-TP	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Pentachlorophenol	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Chlordane	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	o-Dichlorobenzene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Xylenes, Total	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Vinyl chloride	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	DICHLOROMETHANE	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Chlordane	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Nitrate	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Nitrite	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Pentachlorophenol	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4,5-TP	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4-D	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Heptachlor epoxide	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Heptachlor	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	LASSO	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Atrazine	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Aldicarb	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Carbofuran	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Aldicarb sulfone	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Aldicarb sulfoxide	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dinoseb	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Picloram	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Simazine	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	OXAMYL	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Endothall	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Diquat	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dalapon	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Toxaphene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Methoxychlor	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	BHC-GAMMA	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Endrin	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Styrene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Ethylbenzene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Toluene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Benzene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	CHLOROBENZENE	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Tetrachloroethylene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Trichloroethylene	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2-Dichloropropane	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Carbon tetrachloride	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2-Dichloroethane	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
October 1, 1991 – October 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 25, 1991 – April 24, 1994	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 14, 2026State Violation/Reminder Notice1 linked violation
January 14, 2026State Public Notification requested1 linked violation
January 14, 2026State Violation/Reminder Notice1 linked violation
January 14, 2026State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 14, 2026State Violation/Reminder Notice2 linked violations
January 14, 2026State Violation/Reminder Notice2 linked violations
January 14, 2026State Violation/Reminder Notice2 linked violations
January 14, 2026State Violation/Reminder Notice2 linked violations
January 13, 2026State Violation/Reminder Notice21 linked violations
January 13, 2026State Violation/Reminder Notice1 linked violation
January 13, 2026State Public Notification requested21 linked violations
January 13, 2026State Public Notification requested31 linked violations
January 13, 2026State Violation/Reminder Notice31 linked violations
January 13, 2026State Public Notification requested2 linked violations
October 15, 2025State Public Notification requested1 linked violation
October 15, 2025State Violation/Reminder Notice1 linked violation
October 15, 2025State Public Notification requested2 linked violations
October 15, 2025State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
October 15, 2025State Public Notification requested12 linked violations
October 15, 2025State Violation/Reminder Notice1 linked violation
October 15, 2025State Public Notification requested1 linked violation
October 15, 2025State Violation/Reminder Notice1 linked violation
October 14, 2025State Violation/Reminder Notice20 linked violations
October 14, 2025State Violation/Reminder Notice5 linked violations
October 14, 2025State Public Notification requested1 linked violation
October 14, 2025State Public Notification requested31 linked violations
October 14, 2025State Public Notification requested20 linked violations
October 14, 2025State Violation/Reminder Notice31 linked violations
July 21, 1992State Hook-up/Extension Ban1 linked violation
June 11, 1992State Compliance Meeting conducted1 linked violation
June 3, 1992State Public Notification received1 linked violation
May 19, 1992State Formal Notice of Violation issued1 linked violation
March 18, 1992State Public Notification received1 linked violation
March 12, 1992State Public Notification requested1 linked violation
December 28, 1991State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
December 28, 1991State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
December 20, 1991State Public Notification received1 linked violation
November 30, 1991State Public Notification requested1 linked violation
November 30, 1991State Violation/Reminder Notice1 linked violation
May 15, 1991State Public Notification received1 linked violation

Common questions

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

JENKINS, JEFFREY D

618-889-8995

MARION, IL 62959