Public water system · WA5302055

Active

Ames Lake Water Assoc Inc.

At a glance

Ames Lake Water Assoc Inc. (PWSID WA5302055) is an active community water system in King County, Washington. It reports serving 3,224 people through 1,160 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 July 2024.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

3,224

Service connections

1,160

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDWA5302055

System typeCommunity water system

Activity statusActive

Population served3,224

Service connections1,160

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyWA state drinking water program

City served—

StateWashington

ZIP—

CountyKing County

How does Ames Lake Water Assoc Inc. compare with other water systems in King County?

By EPA's size categories, Ames Lake Water Assoc Inc. is a small system (501 to 3,300 people). King County has 214 active public water systems. Its population served is well below the county average of 15,523 people per system, and accounts for less than 0.1% of the 3,321,960 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 Ames Lake Water Assoc Inc. is about half of 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 Ames Lake Water Assoc Inc.?

EPA lists Ames Lake Water Assoc Inc. 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. 142 of the 214 active systems in King County (66%) are also privately owned.

Does Ames Lake Water Assoc Inc. have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2024. The violations listed here began between April 2008 and July 2024. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Consumer Confidence Rule, Chlorobenzene, 1,1,1-Trichloroethane and o-Dichlorobenzene. EPA lists 11 as archived and 1 as resolved. 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. 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.

Began	Violation	Contaminant or rule	Health-based	Status
2024-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	Chlorobenzenecode 2989	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	1,1,1-Trichloroethanecode 2981	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	o-Dichlorobenzenecode 2968	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloroethanecode 2980	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	1,2-Dichloropropanecode 2983	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	1,1,2-Trichloroethanecode 2985	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	Dichloromethanecode 2964	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	Toluenecode 2991	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	Tetrachloroethylenecode 2987	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	Vinyl chloridecode 2976	No	Archived
2008-04-01	Monitoring and reportingMonitoring, Regular · code 03	Benzenecode 2990	No	Archived

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.

Ames Lake Water Assoc Inc.: frequently asked questions

Who runs Ames Lake Water Assoc Inc.?

Ames Lake Water Assoc Inc. (PWSID WA5302055) is a community water system privately owned. It is regulated by the WA state drinking water program.

How many people does Ames Lake Water Assoc Inc. serve?

Ames Lake Water Assoc Inc. reports serving 3,224 people through 1,160 service connections in King County, Washington.

Where does Ames Lake Water Assoc Inc. 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 Ames Lake Water Assoc Inc. 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 July 2024. 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 Ames Lake Water Assoc Inc.'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, none is health-based, and the most recent began in July 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.

Where can I find Ames Lake Water Assoc Inc.'s water quality report?

As a community water system, Ames Lake Water Assoc Inc. 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 King County

Water system	County	Population served	Type	Source
Seattle Public Utilities	King	1,161,961	Community	Surface water
Bellevue City of	King	321,349	Community	Purchased surface water
Kent Water Department	King	166,421	Community	Purchased surface water
Redmond Water System City of	King	163,335	Community	Purchased surface water
Lakehaven Water and Sewer District	King	148,809	Community	Purchased surface water
Renton City of	King	108,091	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, “Ames Lake Water Assoc Inc., PWSID WA5302055, Washington”, https://aquacensus.com/water-systems/washington/ames-lake-water-assoc-inc-wa5302055 (data as of October 1, 2026).