Water Quality in Old Westbury, NY: 1 Violation — Grade A
Grade A · Score 89/100 · 1 water system · Updated 2026-05-03
Old Westbury's water meets all EPA standards with no health-based violations.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
SDWIS records for Old Westbury, NY show 1 EPA violation documented for the local water supply — these span the full range of reportable events from health-based exceedances to monitoring and reporting lapses registered with the federal program.
Water Quality by ZIP Code in Old Westbury
Water quality varies across Old Westbury's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 11568 | A | 89 | 1 | 0 | View report → |
Water Quality Overview
Old Westbury, New York 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 1 water system serving Old Westbury have accumulated 1 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP codes serving approximately 4,700 people.
What Grade A Means
A grade of A indicates excellent compliance with EPA drinking water standards. Old Westbury's water systems have maintained strong performance in both contaminant monitoring and regulatory compliance.
Lead Levels
The average 90th percentile lead level across Old Westbury water systems is 0.0054 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 68% of homes built before 1986, Old Westbury 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 Old Westbury
Old Westbury is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 4,700 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 3 enforcement actions against water systems serving Old Westbury. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Old Westbury
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 Old Westbury Water Systems
The following contaminants have been detected or caused violations across Old Westbury's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | N/A | 1 | 1 | 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 3 enforcement actions against water systems serving Old Westbury. Recent actions:
| Date | Action Type |
|---|---|
| 2025-01-06 | State Order Extension |
| 2021-05-25 | State Informal Action |
| 2021-05-25 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-01-06.
Old Westbury vs. Nearby New York Cities
How Old Westbury's water quality compares to similar cities in New York:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Old Westbury | A | 1 | 1 | 4,700 |
| Warnerville | D | 0 | 1 | 4,678 |
| Little Falls | B | 6 | 2 | 4,675 |
| Waterville | B | 1 | 2 | 4,742 |
Common Questions About Old Westbury Water
These are the most common questions residents search for about water quality in Old Westbury, New York:
Is Old Westbury water hard or soft? Water hardness varies by source. Old Westbury's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Old Westbury tap water? Old Westbury'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 Old Westbury? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Old Westbury vs. New York Average
Understanding how Old Westbury compares to the broader New York 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 Old Westbury.
ZIP Codes in Old Westbury
Old Westbury spans 1 ZIP code. The ZIP with the lowest water quality score is 11568. 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.