Public water system · WA5395910
ActiveLwwsd - South Shore Water System
At a glance
Lwwsd - South Shore Water System (PWSID WA5395910) is an active community water system in Whatcom County, Washington. It reports serving 10,028 people through 4,038 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
10,028
Service connections
4,038
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Lwwsd - South Shore Water System compare with other water systems in Whatcom County?
By EPA's size categories, Lwwsd - South Shore Water System is a large system (10,001 to 100,000 people). Whatcom County has 183 active public water systems, and Lwwsd - South Shore Water System is the 4th-largest of them by population served. Its population served is about 7 times the county average of 1,437 people per system, and accounts for 3.8% 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 Lwwsd - South Shore Water System is about 50% above 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 140 Washington systems (3%) list surface water as their primary source.
Who owns and regulates Lwwsd - South Shore Water System?
EPA lists Lwwsd - South Shore Water System as owned by a local 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. 28 of the 183 active systems in Whatcom County (15%) are also owned by a local government.
Does Lwwsd - South Shore Water System 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 2012. The violations listed here began between January 2007 and July 2012. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Consumer Confidence Rule, 1,2,4-Trichlorobenzene, Carbon tetrachloride and 1,1,2-Trichloroethane. EPA lists 12 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 |
|---|---|---|---|---|
| 2012-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | 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.
Lwwsd - South Shore Water System: frequently asked questions
Who runs Lwwsd - South Shore Water System?
Lwwsd - South Shore Water System (PWSID WA5395910) is a community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does Lwwsd - South Shore Water System serve?
Lwwsd - South Shore Water System reports serving 10,028 people through 4,038 service connections in Whatcom County, Washington.
Where does Lwwsd - South Shore Water System get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Lwwsd - South Shore Water System 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 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 Lwwsd - South Shore Water System'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 2012. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Lwwsd - South Shore Water System's water quality report?
As a community water system, Lwwsd - South Shore Water System 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 |
| Birch Bay Water & Sewer District | Whatcom | 9,046 | Community | Purchased groundwater |
| Blaine City of | Whatcom | 6,319 | Community | Groundwater |
| Everson City of | Whatcom | 3,893 | 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, “Lwwsd - South Shore Water System, PWSID WA5395910, Washington”, https://aquacensus.com/water-systems/washington/lwwsd-south-shore-water-system-wa5395910 (data as of October 1, 2026).