Water Quality in Auburn, ME: 21 Violations — Grade D
Grade D · Score 54/100 · 3 water systems · Updated 2026-05-03
Auburn's water has significant violations. Water testing and filtration are recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Auburn, ME has 21 violations in the EPA compliance history — breakdown below.
Water Quality by ZIP Code in Auburn
Water quality varies across Auburn's 3 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 04210 | D | 49 | 7 | 0 | View report → |
| 04211 | D | 54 | 7 | 0 | View report → |
| 04212 | C | 59 | 7 | 0 | View report → |
Water Quality Overview
Auburn, Maine receives a water quality grade of D with an overall score of 54 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 3 water systems serving Auburn have accumulated 21 EPA violations (all monitoring/reporting type). These violations are tracked across 3 ZIP codes serving approximately 17,380 people.
What Grade D Means
A grade of D indicates significant compliance issues. Auburn's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.
Lead Levels
The average 90th percentile lead level across Auburn water systems is 0.0062 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 83% of homes built before 1986, Auburn has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Auburn is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Auburn
Auburn is served by 3 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 17,380 people across 3 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 30 enforcement actions against water systems serving Auburn. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Auburn
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Auburn Water Systems
The following contaminants have been detected or caused violations across Auburn's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | N/A | 12 | 3 | No |
| Surface Water Treatment Rule | Treatment Technique | N/A | 9 | 3 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 8 enforcement actions against water systems serving Auburn. Recent actions:
| Date | Action Type |
|---|---|
| 2025-03-18 | State Filed Judgment |
| 2025-02-24 | State Filed Judgment |
| 2025-02-24 | State Informal Enforcement |
| 2024-07-19 | State Order Extension |
| 2022-09-16 | State Order Extension |
| 2022-07-25 | State Order Extension |
| 2022-06-30 | State Informal Action |
| 2022-06-16 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-03-18.
Auburn vs. Nearby Maine Cities
How Auburn's water quality compares to similar cities in Maine:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Auburn | D | 21 | 3 | 17,380 |
| Lisbon Falls | D | 0 | 1 | 17,245 |
| Topsham | B | 11 | 5 | 18,701 |
| Sanford | C | 2 | 4 | 14,678 |
Water Quality by ZIP Code in Auburn
Water quality varies across Auburn's ZIP codes. The table below shows the worst-scoring and best-scoring areas:
Common Questions About Auburn Water
These are the most common questions residents search for about water quality in Auburn, Maine:
Is Auburn water hard or soft? Water hardness varies by source. Auburn's 3 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Auburn tap water? Auburn's water receives a grade of D (54/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Auburn? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Auburn vs. Maine Average
Understanding how Auburn compares to the broader Maine average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Auburn.
ZIP Codes in Auburn
Auburn spans 3 ZIP codes. The ZIP with the lowest water quality score is 04210. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.