Public water system · ME0090660
ActiveHampden Water District
At a glance
Hampden Water District (PWSID ME0090660) is an active community water system in Penobscot County, Maine. It reports serving 4,628 people through 1,851 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,628
Service connections
1,851
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Hampden Water District compare with other water systems in Penobscot County?
By EPA's size categories, Hampden Water District is a medium system (3,301 to 10,000 people). Penobscot County has 169 active public water systems, and Hampden Water District is the 6th-largest of them by population served. Its population served is about 8.5 times the county average of 547 people per system, and accounts for 5% of the 92,416 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 Hampden Water District is about 31% 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 8 Maine systems (0.4%) list purchased surface water as their primary source.
Who owns and regulates Hampden Water District?
EPA lists Hampden Water 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. 37 of the 169 active systems in Penobscot County (22%) are also owned by a local government.
Does Hampden Water District have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2021. The violations listed here began between July 1992 and July 2021. By type: 5 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2004-07-11 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2004-01-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2003-07-11 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1992-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 7 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.
Hampden Water District: frequently asked questions
Who runs Hampden Water District?
Hampden Water District (PWSID ME0090660) is a community water system owned by a local government. It is regulated by the ME state drinking water program.
How many people does Hampden Water District serve?
Hampden Water District reports serving 4,628 people through 1,851 service connections in Penobscot County, Maine.
Where does Hampden Water District 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 Hampden Water District have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2021. 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 Hampden Water 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. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in July 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the ME state drinking water program.
Where can I find Hampden Water District's water quality report?
As a community water system, Hampden Water 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 Penobscot County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bangor Water District | Penobscot | 27,298 | Community | Surface water |
| Brewer Water Department | Penobscot | 8,860 | Community | Surface water |
| Old Town Water District | Penobscot | 7,648 | Community | Groundwater |
| Orono-Veazie Water District | Penobscot | 5,793 | Community | Groundwater |
| Maine Water Company Millinocket Division | Penobscot | 5,400 | Community | Surface water |
| Lincoln Water District | Penobscot | 3,020 | 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, “Hampden Water District, PWSID ME0090660, Maine”, https://aquacensus.com/water-systems/maine/hampden-water-district-me0090660 (data as of October 1, 2026).