Napavine, WA · Lewis County
GUNDERSON WATER WORKS Water System
Consumer Confidence Report status
GUNDERSON WATER WORKS 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 GUNDERSON WATER WORKS.
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 Washington’s official records. Always confirm current status with Washington before making decisions based on this information.
System facts
- System ID (PWSID)
- WA5330235
- System type
- Community Water System
- Population served
- 53
- Service connections
- 24
- Ownership
- privately owned
- Water source
- groundwater (wells)
GUNDERSON WATER WORKS is one of 3,227 community water systems in Washington in the 500 or fewer people size category, serving 53 people from groundwater.
As of August 1, 2026, its federal record holds 56 entries between 1979 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.
Of the 56, 55 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 volatile organic chemicals, inorganic chemicals, and the Total Coliform Rules.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 2014 – October 31, 2014
ResolvedMonitoring, Regular
—Nitrate
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—DICHLOROMETHANE
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—o-Dichlorobenzene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—p-Dichlorobenzene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Vinyl chloride
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-Dichloroethane
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Carbon tetrachloride
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-Dichloropropane
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Trichloroethylene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Tetrachloroethylene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—CHLOROBENZENE
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Benzene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Toluene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Ethylbenzene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Styrene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
October 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—DICHLOROMETHANE
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—o-Dichlorobenzene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—p-Dichlorobenzene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Vinyl chloride
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—1,2-Dichloroethane
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Carbon tetrachloride
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—1,2-Dichloropropane
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Trichloroethylene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Tetrachloroethylene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—CHLOROBENZENE
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Benzene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Toluene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Ethylbenzene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Regular
—Styrene
July 1, 2010 – September 30, 2010
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 2008 – August 31, 2008
ArchivedMonitoring, Regular
—Diquat
January 1, 2005 – December 31, 2007
ResolvedMonitoring, Repeat Major (TCR)
—Coliform (TCR)
November 1, 1995 – November 30, 1995
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 1995 – September 30, 1995
ArchivedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
August 1, 1992 – August 31, 1992
ArchivedMonitoring, Regular
—Cadmium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Chromium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Fluoride
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Mercury
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Nitrate
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Selenium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Arsenic
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Barium
October 1, 1979 – October 31, 1979
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 |
|---|---|---|---|---|
| October 1, 2014 – October 31, 2014 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2011 – December 31, 2011 | Monitoring, Regular | Nitrate | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Benzene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Toluene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | Styrene | — | Resolved |
| October 1, 2010 – December 31, 2010 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Benzene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Toluene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| July 1, 2010 – September 30, 2010 | Monitoring, Regular | Styrene | — | Resolved |
| August 1, 2008 – August 31, 2008 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| January 1, 2005 – December 31, 2007 | Monitoring, Regular | Diquat | — | Resolved |
| November 1, 1995 – November 30, 1995 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Archived |
| September 1, 1995 – September 30, 1995 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| August 1, 1992 – August 31, 1992 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Cadmium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Chromium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Fluoride | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Mercury | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Nitrate | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Selenium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Arsenic | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Barium | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- November 30, 2014State Compliance achieved1 linked violation
- March 28, 2012State Compliance achieved1 linked violation
- March 24, 2011State Compliance achieved40 linked violations
- September 22, 1993Federal issued Formal Notice of Violation3 linked violations
- August 31, 1992State Violation/Reminder Notice1 linked violation
Common questions
Is GUNDERSON WATER WORKS required to publish a Consumer Confidence Report?
- Yes. GUNDERSON WATER WORKS 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 GUNDERSON WATER WORKS’s next Consumer Confidence Report due?
- GUNDERSON WATER WORKS’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GUNDERSON WATER WORKS have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for GUNDERSON WATER WORKS.
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
GUNDERSON WATER WORKS
Phone not on record
Napavine, WA 98565