Water Quality in Cedar Park, TX: 12 Violations — Grade A
Grade A · Score 89/100 · 3 water systems · Updated 2026-05-03
Cedar Park's water meets all EPA standards with no health-based violations.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
On record with EPA: Cedar Park, TX has 12 water violations.
Water Quality by ZIP Code in Cedar Park
Water quality varies across Cedar Park's 2 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 78613 | B | 82 | 6 | 0 | View report → |
| 78630 | A | 96 | 6 | 0 | View report → |
Water Quality Overview
Cedar Park, Texas receives a water quality grade of A with an overall score of 89 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 3 water systems serving Cedar Park have accumulated 12 EPA violations (all monitoring/reporting type). These violations are tracked across 2 ZIP codes serving approximately 93,224 people.
What Grade A Means
A grade of A indicates excellent compliance with EPA drinking water standards. Cedar Park's water systems have maintained strong performance in both contaminant monitoring and regulatory compliance.
Lead Levels
The average 90th percentile lead level across Cedar Park water systems is 0.0030 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
Water Systems Serving Cedar Park
Cedar Park is served by 3 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 93,224 people across 2 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 20 enforcement actions against water systems serving Cedar Park. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Cedar Park
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 Cedar Park Water Systems
The following contaminants have been detected or caused violations across Cedar Park's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | N/A | 6 | 2 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 6 | 2 | 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 10 enforcement actions against water systems serving Cedar Park. Recent actions:
| Date | Action Type |
|---|---|
| 2023-04-14 | State Order Extension |
| 2023-03-08 | State Informal Action |
| 2023-03-08 | State Order Extension |
| 2023-02-15 | State Informal Action |
| 2023-02-15 | State Informal Enforcement |
| 2023-01-25 | State Informal Action |
| 2022-08-11 | State Informal Action |
| 2022-08-11 | State Informal Enforcement |
| 2022-01-25 | State Informal Action |
| 2021-12-17 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2023-04-14.
Cedar Park vs. Nearby Texas Cities
How Cedar Park's water quality compares to similar cities in Texas:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Cedar Park | A | 12 | 3 | 93,224 |
| Harlingen | B | 60 | 3 | 92,311 |
| Heidenheimer | C | 0 | 1 | 94,935 |
| Baytown | B | 116 | 5 | 88,459 |
Recommended Water Filters for Cedar Park
Based on contaminants detected in Cedar Park's water supply, these filter types are recommended:
Granular Activated Carbon (GAC, whole-house or under-sink)
- Removes: Chlorine
- Effectiveness: 95-99%
- Cost range: $100–$600
- Certification: NSF/ANSI 42
- Recommended products:
- Aquasana AQ-5200
- Waterdrop Chubby Pitcher
- Berkey Travel
Common Questions About Cedar Park Water
These are the most common questions residents search for about water quality in Cedar Park, Texas:
Is Cedar Park water hard or soft? Water hardness varies by source. Cedar Park's 3 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Cedar Park tap water? Cedar Park's water receives a grade of A (89/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Cedar Park? Based on detected contaminants, a granular activated carbon (gac, whole-house or under-sink) filter is most recommended. See our Water Filter Matcher for personalized recommendations.
Cedar Park vs. Texas Average
Understanding how Cedar Park 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 Cedar Park.
ZIP Codes in Cedar Park
Cedar Park spans 2 ZIP codes. The ZIP with the lowest water quality score is 78613. 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.
Frequently Asked Questions
Your Water is Safe — Here's How to Keep It That Way
Grade A is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.