LAONA, WI · Forest County

LAONA SANITARY DIST Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.

System facts

System ID (PWSID): WI7210108
System type: Community Water System
Population served: 950
Service connections: 442
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2022 – September 30, 2022
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2022 – October 18, 2022
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
January 1, 1995 – March 19, 1996
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Diquat
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Endothall
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Simazine
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Picloram
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Atrazine
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
LASSO
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
2,4-D
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Chlordane
January 1, 1993 – July 6, 1993
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Endrin
January 1, 1993 – July 6, 1993
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2022 – September 30, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2022 – October 18, 2022	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 1995 – March 19, 1996	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
July 1, 1993 – December 31, 1993	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Diquat	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Endothall	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Simazine	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Picloram	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Atrazine	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	LASSO	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	2,4-D	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Chlordane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1993 – July 6, 1993	Monitoring, Regular	Endrin	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

December 23, 2025State Compliance achieved1 linked violation
July 11, 2023State Violation/Reminder Notice7 linked violations
October 18, 2022State Compliance achieved9 linked violations
November 22, 2011Federal Compliance achieved2 linked violations
June 23, 2011Federal issued Formal Notice of Violation2 linked violations
December 10, 2010State Public Notification received13 linked violations
January 22, 2001State Other7 linked violations
December 19, 1991State Public Notification received6 linked violations
December 19, 1991State Public Notification issued2 linked violations
December 10, 1991State Public Notification requested1 linked violation

Contact

LAONA SANITARY DISTRICT

Phone not on record

LAONA, WI 54541