Public water system · ME0090410
ActiveGreat Salt Bay Sanitary District
At a glance
Great Salt Bay Sanitary District (PWSID ME0090410) is an active community water system in Lincoln County, Maine. It reports serving 2,143 people through 857 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, 5 are health-based, and the most recent began in April 2023.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,143
Service connections
857
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Great Salt Bay Sanitary District compare with other water systems in Lincoln County?
By EPA's size categories, Great Salt Bay Sanitary District is a small system (501 to 3,300 people). Lincoln County has 84 active public water systems, and Great Salt Bay Sanitary District is the 2nd-largest of them by population served. Its population served is about 7.4 times the county average of 289 people per system, and accounts for 8.8% of the 24,301 people reported by systems filed under the county. Across Maine, the 1,862 active systems average 503 people each. Nationally, the average active community water system reports serving 6,703 people, so Great Salt Bay Sanitary District 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. Maine has 386 active community water systems, 21% of the state's 1,862 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 61 Maine systems (3.3%) list surface water as their primary source.
Who owns and regulates Great Salt Bay Sanitary District?
EPA lists Great Salt Bay Sanitary District as owned by a local government. The ME state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 17 of the 84 active systems in Lincoln County (20%) are also owned by a local government.
Does Great Salt Bay Sanitary District have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in April 2023. The violations listed here began between October 2009 and April 2023. By type: 7 monitoring and reporting, 4 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2023-04-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2021-04-21 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Archived |
| 2015-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2010-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2009-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | 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.
Great Salt Bay Sanitary District: frequently asked questions
Who runs Great Salt Bay Sanitary District?
Great Salt Bay Sanitary District (PWSID ME0090410) is a community water system owned by a local government. It is regulated by the ME state drinking water program.
How many people does Great Salt Bay Sanitary District serve?
Great Salt Bay Sanitary District reports serving 2,143 people through 857 service connections in Lincoln County, Maine.
Where does Great Salt Bay Sanitary District 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 Great Salt Bay Sanitary District have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in April 2023. 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 Great Salt Bay Sanitary District'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, 5 are health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the ME state drinking water program.
Where can I find Great Salt Bay Sanitary District's water quality report?
As a community water system, Great Salt Bay Sanitary District 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 Lincoln County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Boothbay Region Water District | Lincoln | 8,448 | Community | Surface water |
| Wiscasset Water District | Lincoln | 1,970 | Community | Purchased surface water |
| Waldoboro Water Dept | Lincoln | 1,065 | Community | Groundwater |
| Lake Pemaquid Campground | Lincoln | 808 | Transient non-community | Groundwater |
| Rsu 40 Medomak Valley High School | Lincoln | 669 | Non-transient non-community | Groundwater |
| Glidden Point Oyster Company | Lincoln | 399 | Transient non-community | Groundwater |
Related pages
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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, “Great Salt Bay Sanitary District, PWSID ME0090410, Maine”, https://aquacensus.com/water-systems/maine/great-salt-bay-sanitary-district-me0090410 (data as of October 1, 2026).