Public water system · WA53AB912

Active

Deer Creek Water Assn/Guide South

At a glance

Deer Creek Water Assn/Guide South (PWSID WA53AB912) is an active community water system in Whatcom County, Washington. It reports serving 251 people through 87 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2020.

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

Population served

251

Service connections

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDWA53AB912

System typeCommunity water system

Activity statusActive

Population served251

Service connections87

Primary water sourcePurchased surface water

Owner typePrivate

Primacy agencyWA state drinking water program

City served—

StateWashington

ZIP—

CountyWhatcom County

How does Deer Creek Water Assn/Guide South compare with other water systems in Whatcom County?

By EPA's size categories, Deer Creek Water Assn/Guide South is a very small system (500 people or fewer). Whatcom County has 183 active public water systems. Its population served is well below the county average of 1,437 people per system, and accounts for less than 0.1% of the 263,011 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 Deer Creek Water Assn/Guide South 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 130 Washington systems (2.8%) list purchased surface water as their primary source.

Who owns and regulates Deer Creek Water Assn/Guide South?

EPA lists Deer Creek Water Assn/Guide South 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. 140 of the 183 active systems in Whatcom County (77%) are also privately owned.

Does Deer Creek Water Assn/Guide South have drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2020. The violations listed here began between January 2014 and January 2020. By type: 6 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Haloacetic acids (HAA5) (3 of them). EPA lists 8 as resolved. 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
2020-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2020-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2016-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2016-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2016-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2015-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2014-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2014-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved

All 8 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.

Deer Creek Water Assn/Guide South: frequently asked questions

Who runs Deer Creek Water Assn/Guide South?

Deer Creek Water Assn/Guide South (PWSID WA53AB912) is a community water system privately owned. It is regulated by the WA state drinking water program.

How many people does Deer Creek Water Assn/Guide South serve?

Deer Creek Water Assn/Guide South reports serving 251 people through 87 service connections in Whatcom County, Washington.

Where does Deer Creek Water Assn/Guide South get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Deer Creek Water Assn/Guide South have any drinking water violations?

EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2020. 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 Deer Creek Water Assn/Guide South'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. EPA's records list 8 violations for this system; none is health-based, and the most recent began in January 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.

Where can I find Deer Creek Water Assn/Guide South's water quality report?

As a community water system, Deer Creek Water Assn/Guide South 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 Whatcom County

Water system	County	Population served	Type	Source
Bellingham-Water Division City of	Whatcom	141,127	Community	Surface water
Lynden Water Department	Whatcom	20,062	Community	Surface water
Ferndale	Whatcom	19,305	Community	Groundwater
Lwwsd - South Shore Water System	Whatcom	10,028	Community	Surface water
Birch Bay Water & Sewer District	Whatcom	9,046	Community	Purchased groundwater
Blaine City of	Whatcom	6,319	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, “Deer Creek Water Assn/Guide South, PWSID WA53AB912, Washington”, https://aquacensus.com/water-systems/washington/deer-creek-water-assn-guide-south-wa53ab912 (data as of October 1, 2026).