OLYMPIA, WA · Thurston County
ALDERBROOK ESTATES Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of September 1, 2002. 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 Thurston County, WA.
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)
- WA5301130
- System type
- Community Water System
- Population served
- 151
- Service connections
- 55
- Ownership
- privately owned
- Water source
- groundwater (wells)
ALDERBROOK ESTATES is one of 3,227 community water systems in Washington in the 500 or fewer people size category, formerly serving 151 people from groundwater.
EPA's federal records list this system as inactive in 2002; the record below is historical.
As of August 1, 2026, its federal record holds 9 entries between 1979 and 1994, all of which EPA lists as closed. Nothing has been added since 1994.
All 9 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 inorganic chemicals, the Total Coliform Rules, and the Radionuclides and Revised Rad Rule.
Violation history
Monitoring, Routine Major (TCR)
—Coliform (TCR)
March 1, 1994 – March 31, 1994
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
February 1, 1993 – February 28, 1993
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1991 – November 30, 1991
ArchivedMonitoring, Regular
—Fluoride
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Nitrate
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Mercury
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Arsenic
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Barium
October 1, 1979 – October 31, 1979
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| March 1, 1994 – March 31, 1994 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| February 1, 1993 – February 28, 1993 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| November 1, 1991 – November 30, 1991 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Fluoride | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Nitrate | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Mercury | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Arsenic | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Barium | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- February 28, 1993State Violation/Reminder Notice2 linked violations
- March 31, 1992State Violation/Reminder Notice1 linked violation
Last known contact on file (system is inactive)
Not on record
Phone not on record
OLYMPIA, WA 98502