Public water system · WA5331005
ActiveHarbor Mobile Estates
At a glance
Harbor Mobile Estates (PWSID WA5331005) is an active community water system in Grays Harbor County, Washington. It reports serving 72 people through 44 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
72
Service connections
44
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Harbor Mobile Estates compare with other water systems in Grays Harbor County?
By EPA's size categories, Harbor Mobile Estates is a very small system (500 people or fewer). Grays Harbor County has 88 active public water systems. Its population served is well below the county average of 1,013 people per system, and accounts for less than 0.1% of the 89,150 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active community water system reports serving 6,703 people, so Harbor Mobile Estates is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Washington has 2,392 active community water systems, 51% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates Harbor Mobile Estates?
EPA lists Harbor Mobile Estates as privately owned. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 62 of the 88 active systems in Grays Harbor County (70%) are also privately owned.
Does Harbor Mobile Estates have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2009. The violations listed here began between January 2005 and January 2009. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 9 as resolved and 3 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2007-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Archived |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Archived |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endrincode 2005 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Harbor Mobile Estates: frequently asked questions
Who runs Harbor Mobile Estates?
Harbor Mobile Estates (PWSID WA5331005) is a community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Harbor Mobile Estates serve?
Harbor Mobile Estates reports serving 72 people through 44 service connections in Grays Harbor County, Washington.
Where does Harbor Mobile Estates get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Harbor Mobile Estates have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2009. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Harbor Mobile Estates' water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Harbor Mobile Estates' water quality report?
As a community water system, Harbor Mobile Estates must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Grays Harbor County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aberdeen City of | Grays Harbor | 22,867 | Community | Surface water |
| Hoquiam Water Department | Grays Harbor | 11,456 | Community | Surface water |
| Ocean Shores Water Dept | Grays Harbor | 9,347 | Community | Groundwater |
| Elma City of | Grays Harbor | 6,638 | Community | Groundwater |
| Montesano City of | Grays Harbor | 6,204 | Community | Groundwater |
| Westport Water Department | Grays Harbor | 5,346 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Harbor Mobile Estates, PWSID WA5331005, Washington”, https://aquacensus.com/water-systems/washington/harbor-mobile-estates-wa5331005 (data as of October 1, 2026).