Community Water System · PWS WA5329250
Grays Harbor Co Water Dist 2
Montesano, Washington 98563 - drinking water served from groundwater sources to 5,112 people, tracked in EPA SDWIS and UCMR5.
- 5,112
- People served
- 73
- EPA violations
- 9
- Health-based
- No PFAS
- UCMR5 result
The verdict
EPA records 73 drinking-water violations at Grays Harbor Co Water Dist 2, 12% of them health-based - above the Washington per-system average.
- 73
- Total EPA violations on record
- 12%
- Health-based (MCL / treatment failure)
- 5,112
- People served by this system
- 0
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Grays Harbor Co Water Dist 2
Grays Harbor Co Water Dist 2 is a local-owned community water system that delivers drinking water to 5,112 residents in Montesano, Washington (Grays Harbor County) through 1,513 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 73 total violations for this system , of which 9 (12%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 61 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.
The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 11 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.
Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%).
Grays Harbor Co Water Dist 2's 73 violations sit above the Washington average.
All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,513
- County
- Grays Harbor
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 61
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 11 | 2007 |
| Coliform (TCR) | MCL | 9 | 1995 |
| Coliform (TCR) | MR | 7 | 1994 |
| Consumer Confidence Rule | Other | 3 | 2023 |
| Revised Total Coliform Rule | MON | 2 | 2020 |
| Endrin | MR | 1 | 2008 |
| Toxaphene | MR | 1 | 2008 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2008 |
| Simazine | MR | 1 | 2008 |
| Hexachlorocyclopentadiene | MR | 1 | 2008 |
| Atrazine | MR | 1 | 2008 |
| LASSO | MR | 1 | 2008 |
| Heptachlor epoxide | MR | 1 | 2008 |
| HEXACHLOROBENZENE | MR | 1 | 2008 |
| Benzo(a)pyrene | MR | 1 | 2008 |
| Chlordane | MR | 1 | 2008 |
| trans-1,2-Dichloroethylene | MR | 1 | 2008 |
| 1,2-Dichloropropane | MR | 1 | 2008 |
| Trichloroethylene | MR | 1 | 2008 |
| Benzene | MR | 1 | 2008 |
| Toluene | MR | 1 | 2008 |
| Styrene | MR | 1 | 2008 |
| Pentachlorophenol | MR | 1 | 2008 |
| 1,2-Dichloroethane | MR | 1 | 2008 |
| Carbon tetrachloride | MR | 1 | 2008 |
| Heptachlor | MR | 1 | 2008 |
| p-Dichlorobenzene | MR | 1 | 2008 |
| cis-1,2-Dichloroethylene | MR | 1 | 2008 |
| Asbestos | MR | 1 | 2011 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2021 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 4:2 FTS | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 6/23/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 8:2 FTS | 6/23/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 6/23/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 6/23/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 6/23/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 6/23/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| NEtFOSAA | 6/23/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 6/23/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFDoA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 6/23/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 6/23/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFNA | 6/23/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFUnA | 6/23/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| HFPO-DA | 6/23/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxS | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 6/23/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/23/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/23/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 6/23/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 6/23/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 10/20/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMPA | 10/20/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 10/20/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 4:2 FTS | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 10/20/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 10/20/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOS | 10/20/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 10/20/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 10/20/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 10/20/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 10/20/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 10/20/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFDA | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 10/20/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Grays Harbor Co Water Dist 2.
EPA SDWIS, Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID WA5329250 on SDWISSource: EPA SDWIS Federal Reports Search
Washington Drinking Water Authority
Washington State Department of Health, Office of Drinking Water is the primacy agency that licenses and inspects Grays Harbor Co Water Dist 2 under EPA-delegated authority.
Open WA regulator portalSource: Washington State Department of Health, Office of Drinking Water
Violation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2023 | Consumer Confidence Rule | Other | 3 | SDWIS / WA5329250 / 7000 |
| 2021 | Total Haloacetic Acids (HAA5) | MR | 1 | SDWIS / WA5329250 / 2456 |
| 2021 | Nitrate | MR | 1 | SDWIS / WA5329250 / 1040 |
| 2021 | TTHM | MR | 1 | SDWIS / WA5329250 / 2950 |
| 2020 | Revised Total Coliform Rule | MON | 2 | SDWIS / WA5329250 / 8000 |
| 2011 | Asbestos | MR | 1 | SDWIS / WA5329250 / 1094 |
| 2008 | Endrin | MR | 1 | SDWIS / WA5329250 / 2005 |
| 2008 | Toxaphene | MR | 1 | SDWIS / WA5329250 / 2020 |
| 2008 | Di(2-ethylhexyl) adipate | MR | 1 | SDWIS / WA5329250 / 2035 |
| 2008 | Simazine | MR | 1 | SDWIS / WA5329250 / 2037 |
| 2008 | Hexachlorocyclopentadiene | MR | 1 | SDWIS / WA5329250 / 2042 |
| 2008 | Atrazine | MR | 1 | SDWIS / WA5329250 / 2050 |
| 2008 | LASSO | MR | 1 | SDWIS / WA5329250 / 2051 |
| 2008 | Heptachlor epoxide | MR | 1 | SDWIS / WA5329250 / 2067 |
| 2008 | HEXACHLOROBENZENE | MR | 1 | SDWIS / WA5329250 / 2274 |
How Grays Harbor Co Water Dist 2 Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Grays Harbor Co Water Dist 2 | Washington avg | Federal benchmark |
|---|---|---|---|
| Total violations | 73 | 69 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 9 | 4.5 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 39.7% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 5,112 | 2,137 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.
Federal MCL reference, Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026) |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is Grays Harbor Co Water Dist 2 water safe to drink? ▼
How many people does Grays Harbor Co Water Dist 2 serve? ▼
What type of violations does Grays Harbor Co Water Dist 2 have? ▼
Has PFAS been detected in Grays Harbor Co Water Dist 2 water? ▼
What water source does Grays Harbor Co Water Dist 2 use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.