MASON, OH · Warren County
SHADOW LAKE VILLAGE MHP Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of October 13, 2000. 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 Warren County, OH.
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 Ohio’s official records. Always confirm current status with Ohio before making decisions based on this information.
System facts
- System ID (PWSID)
- OH8301211
- System type
- Community Water System
- Population served
- 857
- Service connections
- 300
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
SHADOW LAKE VILLAGE MHP is one of 558 community water systems in Ohio in the 501 to 3,300 people size category, formerly serving 857 people from surface water.
EPA's federal records list this system as inactive in 2000; the record below is historical.
As of August 1, 2026, its federal record holds 17 entries between 1986 and 1998, all of which EPA lists as closed. Nothing has been added since 1998.
All 17 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, the Total Coliform Rules, and inorganic chemicals.
Violation history
Monitoring, Routine Minor (TCR)
—Coliform (TCR)
December 1, 1998 – December 31, 1998
ResolvedMonitoring, Regular
—BHC-GAMMA
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Methoxychlor
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Diquat
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—OXAMYL
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Picloram
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Carbofuran
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—2,4-D
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Benzo(a)pyrene
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Pentachlorophenol
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Nitrate
October 1, 1995 – October 31, 1995
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
February 1, 1994 – February 28, 1994
ArchivedMonitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
July 1, 1993 – July 31, 1993
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
December 15, 1986 – December 14, 1990
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 |
|---|---|---|---|---|
| December 1, 1998 – December 31, 1998 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Methoxychlor | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Diquat | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | OXAMYL | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Picloram | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Carbofuran | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | 2,4-D | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| October 1, 1995 – October 31, 1995 | Monitoring, Regular | Nitrate | — | Resolved |
| February 1, 1994 – February 28, 1994 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Archived |
| July 1, 1993 – July 31, 1993 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Archived |
| December 15, 1986 – December 14, 1990 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- October 13, 2000State Compliance achieved7 linked violations
- March 4, 1999State Compliance achieved31 linked violations
- November 6, 1989State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- October 31, 1989State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- April 14, 1988State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- February 22, 1987State Public Notification received1 linked violation
- December 26, 1985State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- December 20, 1985State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- July 28, 1983State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
Not on record
440-564-2279
MASON, OH 45040