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Dauphin Island, AL Tap Water Quality 2026

Water quality report for Dauphin Island, AL — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Dauphin Island's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Dauphin Island Water & Sewer PWSID: AL0000971 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.00 ppb, 7% of the action level and no violations are open. No PFAS was detected.

A

Dauphin Island earns an A for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.00 ppb — 7% of the federal action level
PFAS tested, none detected
4 violations since 2015, 0 health-based
No violations currently open
Dauphin Island's lead level vs. all Alabama community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.00 ppb — 7% of the federal action level
✓ Lower lead than 82% of Alabama utilities
Population Served
1743
~1942 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
4 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.00 ppb, 7% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2022 Resolved
Radium-226 MONITORING AND REPORTING — — 2022 Archived
Radium-228 MONITORING AND REPORTING — — 2022 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2022 Archived
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

4 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Dauphin Island Water & Sewer
PWSID AL0000971
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 1,743
Service connections 1,942
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Dauphin Island tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.00 ppb, 7% of the action level.
Does Dauphin Island water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Dauphin Island? ▼
Dauphin Island Water & Sewer (PWSID AL0000971). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-08-28. No significant deficiencies were recorded.

What Should Dauphin Island Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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