Olympia Water Quality
Washington
According to EPA SDWIS, Olympia, Washington is served by 25 community water systems covering about 139,015 people. The same extract lists 80 health-based violation records, most recently coded 2950 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Olympia, Washington is delivered through 25 EPA-regulated community water systems serving an estimated 139,015 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 80 violation records across the 25 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 8 distinct EPA contaminant codes: TTHM, LEAD AND COPPER RULE REVISIONS, Total Haloacetic Acids (HAA5), Groundwater Rule, Revised Total Coliform Rule and 3 others. 3 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Washington drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| OLYMPIA CITY OF | 126,966 | 1 | Health |
| GRAND MOUND | 3,764 | 0 | Clean |
| NISQUALLY-LESCHI & WEST NISQUALLY | 3,200 | 1 | Health |
| CARLYON BEACH HOMEOWNERS | 1,273 | 0 | Clean |
| BOSTON HARBOR | 1,153 | 11 | Health |
| BLACK LAKE BIBLE CAMP & CONF CTR | 477 | 1 | Health |
| CUYAMACA | 375 | 1 | Health |
| BETHEL WATER CO | 270 | 0 | Clean |
| TAMOSHAN | 260 | 23 | Health |
| OLYMPIC PARK TRAILER COURT | 169 | 18 | Health |
| MOUNTAIN VALLEY WATER SYSTEM | 126 | 0 | Clean |
| SPANAWAY VILLAGE WATER SYSTEM | 125 | 0 | Clean |
| COUNTRY CLUB ESTATES 521 | 113 | 24 | Health |
| BLACK LAKE ACRES | 104 | 0 | Clean |
| NORTH OFFUT LAKE WTR SERVICE | 97 | 0 | Clean |
| WOODARD PLACE | 94 | 0 | Clean |
| CEDAR CREST MOBILE HOME PARK | 92 | 0 | Clean |
| PIONEER | 84 | 0 | Clean |
| HAYNES ACRES DIVISION 1 | 74 | 0 | Clean |
| Ski View Estates | 47 | 0 | Clean |
| COOPER POINT ESTATES | 36 | 0 | Clean |
| Sexton | 35 | 0 | Clean |
| DELPHI DAUBEL | 29 | 0 | Clean |
| CLOISTER | 29 | 0 | Clean |
| SALT AIRE MOBILE TERRACE | 23 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| BOSTON HARBOR | TTHM | 2025-07-01 |
| BOSTON HARBOR | TTHM | 2025-07-01 |
| CUYAMACA | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| OLYMPIC PARK TRAILER COURT | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| OLYMPIC PARK TRAILER COURT | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| NISQUALLY-LESCHI & WEST NISQUALLY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2023-04-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2023-01-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-10-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-07-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2022-07-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2022-07-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2022-06-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2022-06-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2022-06-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-04-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-04-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-04-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-01-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-01-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2022-01-01 |
| BOSTON HARBOR | Total Haloacetic Acids (HAA5) | 2022-01-01 |
| BOSTON HARBOR | Total Haloacetic Acids (HAA5) | 2022-01-01 |
| BOSTON HARBOR | Total Haloacetic Acids (HAA5) | 2022-01-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2021-12-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2021-10-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2021-10-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2021-09-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2021-07-01 |
| TAMOSHAN | Total Haloacetic Acids (HAA5) | 2021-07-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2021-07-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2021-06-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2020-11-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2020-09-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2020-08-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2020-07-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2020-06-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2020-04-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2019-03-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2019-03-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2019-01-01 |
| COUNTRY CLUB ESTATES 521 | Groundwater Rule | 2019-01-01 |
| BLACK LAKE BIBLE CAMP & CONF CTR | Revised Total Coliform Rule | 2019-01-01 |
What are Olympia's health-based records for?
Olympia's health-based violation records carry 8 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Groundwater Rule | 25 | 2 |
| Total Haloacetic Acids (HAA5) | 24 | 2 |
| Coliform (TCR) | 13 | 2 |
| Tthm | 10 | 2 |
| Lead and Copper Rule Revisions | 4 | 3 |
| Lead and Copper Rule | 2 | 1 |
| Surface Water Treatment Rule | 1 | 1 |
| Revised Total Coliform Rule | 1 | 1 |
TRI Facilities in Olympia
| Facility | Total Releases |
|---|---|
| Crown Beverage Packaging | 1.2M lbs |
| CH2O Inc | 0 lbs |
| Setina Mfg. | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Olympia, Washington? ▼
How many water violations does Olympia have in this EPA extract? ▼
What contaminants were found in Olympia water? ▼
How many water systems serve Olympia? ▼
Where does Olympia get its drinking water? ▼
Are there pollution sources near Olympia? ▼
How does Olympia compare in Washington?
Of the 365 Washington places with at least one community water system on file, Olympia ranks #21 by number of systems (25).
Either side of it: Napavine (26), Oak Harbor (26), Pasco (23), Othello (21)
About This Data
Figures here are the current EPA SDWIS extract joined to the 25 community water systems whose service area lists Olympia, ranked against the 365 Washington places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.