Public water system · WA5309677
ActiveIce Harbor Dam
At a glance
Ice Harbor Dam (PWSID WA5309677) is an active non-transient non-community water system in Walla Walla County, Washington. It reports serving 197 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
197
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Ice Harbor Dam compare with other water systems in Walla Walla County?
By EPA's size categories, Ice Harbor Dam is a very small system (500 people or fewer). Walla Walla County has 69 active public water systems. Its population served is well below the county average of 1,126 people per system, and accounts for 0.3% of the 77,717 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Ice Harbor Dam is about half of that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Washington has 400 active non-transient non-community water systems, 8.5% 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 Ice Harbor Dam?
EPA lists Ice Harbor Dam as owned by the federal government. 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. 8 of the 69 active systems in Walla Walla County (12%) are also owned by the federal government.
Does Ice Harbor Dam have drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 2012. The violations listed here began between October 2006 and July 2012. By type: 11 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Nitrate (11 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 |
|---|---|---|---|---|
| 2012-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2009-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2008-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Archived |
| 2008-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Archived |
| 2008-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Archived |
| 2008-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2007-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2007-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2006-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | 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.
Ice Harbor Dam: frequently asked questions
Who runs Ice Harbor Dam?
Ice Harbor Dam (PWSID WA5309677) is a non-transient non-community water system owned by the federal government. It is regulated by the WA state drinking water program.
How many people does Ice Harbor Dam serve?
Ice Harbor Dam reports serving 197 people through 2 service connections in Walla Walla County, Washington.
Where does Ice Harbor Dam 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 Ice Harbor Dam have any drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in July 2012. 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 Ice Harbor Dam's 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, 11 are health-based, and the most recent began in July 2012. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Ice Harbor Dam's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ice Harbor Dam is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Walla Walla County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Walla Walla Water Division | Walla Walla | 42,959 | Community | Surface water |
| College Place Water Dept | Walla Walla | 8,147 | Community | Groundwater |
| Snake River Housing Water System | Walla Walla | 3,036 | Community | Groundwater |
| Hood Park | Walla Walla | 2,283 | Transient non-community | Groundwater |
| Burbank Business Park | Walla Walla | 1,983 | Non-transient non-community | Groundwater |
| Waitsburg City of | Walla Walla | 1,817 | 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, “Ice Harbor Dam, PWSID WA5309677, Washington”, https://aquacensus.com/water-systems/washington/ice-harbor-dam-wa5309677 (data as of October 1, 2026).