TOPPENISH, 10
SOUTH WHITE SWAN Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of May 1, 2015. 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 10.
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 EPA Region 10’s official records. Always confirm current status with EPA Region 10 before making decisions based on this information.
System facts
- System ID (PWSID)
- 105300104
- System type
- Community Water System
- Population served
- 90
- Service connections
- 21
- Ownership
- Native American tribal
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Nitrate
January 1, 2008 – December 31, 2008
ResolvedMonitoring, Regular
—Nitrate
January 1, 2007 – December 31, 2007
ResolvedMonitoring and Reporting (DBP)
—Chlorine
July 1, 2006 – September 30, 2006
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
June 1, 2006 – June 30, 2006
ResolvedMonitoring, Regular
—Nitrate
January 1, 2006 – December 31, 2006
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 2005 – March 31, 2005
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
February 1, 2005 – February 28, 2005
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 2004 – October 31, 2004
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2004 – December 31, 2004
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
December 1, 2003 – December 31, 2003
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 2003 – November 30, 2003
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
May 1, 2002 – April 30, 2005
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2002 – March 31, 2005
ResolvedMonitoring, Regular
—Antimony, Total
April 1, 2002 – March 31, 2005
ResolvedSanitary Survey (TCR)
—No contaminant on record
February 1, 2001 – January 31, 2006
ResolvedMonitoring, Regular
—Nitrate
March 1, 1999 – February 29, 2000
Resolved
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, 2008 – December 31, 2008 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Nitrate | — | Resolved |
| July 1, 2006 – September 30, 2006 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| June 1, 2006 – June 30, 2006 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | Nitrate | — | Archived |
| March 1, 2005 – March 31, 2005 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| February 1, 2005 – February 28, 2005 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 2004 – October 31, 2004 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| December 1, 2003 – December 31, 2003 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 2003 – November 30, 2003 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| May 1, 2002 – April 30, 2005 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| April 1, 2002 – March 31, 2005 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| April 1, 2002 – March 31, 2005 | Monitoring, Regular | Antimony, Total | — | Resolved |
| February 1, 2001 – January 31, 2006 | Sanitary Survey (TCR) | — | — | Resolved |
| March 1, 1999 – February 29, 2000 | Monitoring, Regular | Nitrate | — | Resolved |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- April 6, 2011Federal Compliance achieved2 linked violations
- March 31, 2009Federal Compliance achieved1 linked violation
- March 31, 2009Federal Compliance achieved4 linked violations
- July 26, 2006Federal Compliance achieved1 linked violation
- May 3, 2006Federal Compliance achieved1 linked violation
- September 1, 2005Federal Compliance achieved1 linked violation
- August 19, 2005Federal Compliance achieved1 linked violation
- August 4, 2005Federal Compliance achieved1 linked violation
- August 1, 2005Federal Compliance achieved1 linked violation
- April 1, 2005Federal Compliance achieved1 linked violation
- June 1, 2004Federal Compliance achieved1 linked violation
- May 1, 2004Federal Compliance achieved1 linked violation
- July 19, 2001Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- November 30, 2000Federal Violation/Reminder Notice1 linked violation
Last known contact on file (system is inactive)
AMBROSE, MICHAEL
509-865-5121
TOPPENISH, WA 98948