Public water system · AL0000971
ActiveDauphin Island Water & Sewer
At a glance
Dauphin Island Water & Sewer (PWSID AL0000971) is an active community water system in Mobile County, Alabama. It reports serving 5,802 people through 1,942 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in July 2022.
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
5,802
Service connections
1,942
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dauphin Island Water & Sewer compare with other water systems in Mobile County?
By EPA's size categories, Dauphin Island Water & Sewer is a medium system (3,301 to 10,000 people). Mobile County has 15 active public water systems. Its population served is well below the county average of 30,761 people per system, and accounts for 1.3% of the 461,411 people reported by systems filed under the county. Across Alabama, the 576 active systems average 11,028 people each. Nationally, the average active community water system reports serving 6,703 people, so Dauphin Island Water & Sewer is about 13% 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. Alabama has 505 active community water systems, 88% of the state's 576 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 302 Alabama systems (52%) list groundwater as their primary source.
Who owns and regulates Dauphin Island Water & Sewer?
EPA lists Dauphin Island Water & Sewer as owned by a local government. The AL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 14 of the 15 active systems in Mobile County (93%) are also owned by a local government.
Does Dauphin Island Water & Sewer have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in July 2022. The violations listed here began between October 2003 and July 2022. By type: 6 monitoring and reporting and 6 contaminant level above the legal limit. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (6 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross Beta Particle Activitycode 4100 | No | Archived |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2005-10-11 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2004-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2004-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2004-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | 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.
Dauphin Island Water & Sewer: frequently asked questions
Who runs Dauphin Island Water & Sewer?
Dauphin Island Water & Sewer (PWSID AL0000971) is a community water system owned by a local government. It is regulated by the AL state drinking water program.
How many people does Dauphin Island Water & Sewer serve?
Dauphin Island Water & Sewer reports serving 5,802 people through 1,942 service connections in Mobile County, Alabama.
Where does Dauphin Island Water & Sewer 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 Dauphin Island Water & Sewer have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in July 2022. 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 Dauphin Island Water & Sewer'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, 6 are health-based, and the most recent began in July 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the AL state drinking water program.
Where can I find Dauphin Island Water & Sewer's water quality report?
As a community water system, Dauphin Island Water & Sewer 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 Mobile County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mobile, Bd. of W&S Comm. of the City of | Mobile | 279,000 | Community | Surface water |
| Mobile County Water & Fire Pro Authority | Mobile | 39,573 | Community | Groundwater |
| South Alabama Utilities Water System | Mobile | 39,249 | Community | Groundwater |
| Prichard Water Works Board | Mobile | 29,190 | Community | Purchased surface water |
| Saraland, Bd of W&S Commissioners | Mobile | 13,827 | Community | Groundwater |
| Grand Bay Water Works Board | Mobile | 11,100 | 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, “Dauphin Island Water & Sewer, PWSID AL0000971, Alabama”, https://aquacensus.com/water-systems/alabama/dauphin-island-water-sewer-al0000971 (data as of October 1, 2026).