Water Quality in Port Aransas, TX: 4 Violations — Grade C
Grade C · Score 68/100 · 1 water system · Updated 2026-05-03
Port Aransas's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Federal EPA data for Port Aransas, TX shows 4 water compliance events in the record — the table below identifies system names and violation types.
Water Quality by ZIP Code in Port Aransas
Water quality varies across Port Aransas's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 78373 | C | 68 | 4 | 4 | View report → |
Water Quality Overview
Port Aransas, Texas receives a water quality grade of C with an overall score of 68 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Port Aransas have accumulated 4 EPA violations, including 4 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 14,880 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Port Aransas's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Port Aransas water systems is 0.0044 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 43% of homes built before 1986, Port Aransas 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.
Water Systems Serving Port Aransas
Port Aransas is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 14,880 people across 1 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 10 enforcement actions against water systems serving Port Aransas. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Port Aransas
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 Port Aransas Water Systems
The following contaminants have been detected or caused violations across Port Aransas's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 4 | 1 | Yes |
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 10 enforcement actions against water systems serving Port Aransas. Recent actions:
| Date | Action Type |
|---|---|
| 2025-03-28 | State Informal Action |
| 2025-03-06 | State Order Extension |
| 2025-02-07 | State Filed Judgment |
| 2025-01-28 | State Informal Action |
| 2025-01-28 | State Informal Enforcement |
| 2025-01-16 | State Informal Action |
| 2025-01-16 | State Informal Enforcement |
| 2024-09-05 | State Informal Action |
| 2024-07-18 | State Informal Action |
| 2024-07-18 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-03-28.
Port Aransas vs. Nearby Texas Cities
How Port Aransas's water quality compares to similar cities in Texas:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Port Aransas | C | 4 | 1 | 14,880 |
| Crosby | B | 1 | 5 | 14,931 |
| Devine | A | 3 | 5 | 14,824 |
| New Waverly | B | 0 | 5 | 14,820 |
Common Questions About Port Aransas Water
These are the most common questions residents search for about water quality in Port Aransas, Texas:
Is Port Aransas water hard or soft? Water hardness varies by source. Port Aransas's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Port Aransas tap water? Port Aransas's water receives a grade of C (68/100). There are 4 health-based violations — consider filtration.
What is the best water filter for Port Aransas? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Port Aransas vs. Texas Average
Understanding how Port Aransas compares to the broader Texas 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 Port Aransas.
ZIP Codes in Port Aransas
Port Aransas spans 1 ZIP code. The ZIP with the lowest water quality score is 78373. 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.