COON VALLEY, WI · Jackson County
SHERWOOD ESTATES MHP Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of March 1, 1996. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Jackson County, WI.
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 Wisconsin’s official records. Always confirm current status with Wisconsin before making decisions based on this information.
System facts
- System ID (PWSID)
- WI6270257
- System type
- Community Water System
- Population served
- 50
- Service connections
- 18
- Ownership
- privately owned
- Water source
- groundwater (wells)
SHERWOOD ESTATES MHP is one of 1,289 community water systems in Wisconsin in the 500 or fewer people size category, formerly serving 50 people from groundwater.
EPA's federal records list this system as inactive in 1996; the record below is historical.
As of August 1, 2026, its federal record holds 19 entries between 1994 and 1996, all of which EPA lists as closed. Nothing has been added since 1996.
All 19 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 and the Lead and Copper Rule.
Violation history
Follow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 1996 – March 1, 1996
ResolvedMonitoring, Regular
—Endrin
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Methoxychlor
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Toxaphene
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Dalapon
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—OXAMYL
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Simazine
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Picloram
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Dinoseb
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Pentachlorophenol
January 1, 1994 – March 31, 1994
ResolvedMonitoring, Regular
—Aldicarb sulfoxide
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—LASSO
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Heptachlor
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Heptachlor epoxide
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—2,4-D
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—2,4,5-TP
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Pentachlorophenol
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 1994 – March 31, 1994
ArchivedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 1994 – March 31, 1994
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 |
|---|---|---|---|---|
| January 1, 1996 – March 1, 1996 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Endrin | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Methoxychlor | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Toxaphene | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Dalapon | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | OXAMYL | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Simazine | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Picloram | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Dinoseb | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Aldicarb sulfoxide | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | LASSO | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Heptachlor | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Heptachlor epoxide | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | 2,4-D | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | 2,4,5-TP | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Pentachlorophenol | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Archived |
| January 1, 1994 – March 31, 1994 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- September 28, 1994State Public Notification received24 linked violations
- August 31, 1994State Violation/Reminder Notice24 linked violations
- August 31, 1994State Public Notification requested24 linked violations
Last known contact on file (system is inactive)
Not on record
Phone not on record
COON VALLEY, WI 54623