Public water system record
Greenlawn Water District
Serves Elwood, Greenlawn, Commack and 4 more places, Suffolk County, NY · 42,000 people served
Federal records show no health-based violations and 18 monitoring/reporting issues for Greenlawn Water District in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 18
Key facts
- Greenlawn Water District draws water from 14 wells.
- Most recent formal enforcement: compliance order with a penalty by New York, April 2025.
- Record on file since 1999, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 806 unknown out of 12,098 service lines.
Check whether Greenlawn Water District serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Selenium
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nickel
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Mercury
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Fluoride
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Cadmium
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Barium
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Bromate
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Chlorite
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Nitrite
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
Full record since 1999
EPA's records for Greenlawn Water District go back to 1999. Before October 19, 2016 they list 2 health-based violations (1 resolved, 1 archived by EPA without a recorded fix) and 3 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
| 2000s | 1 | 0 |
| 2010 to October 18, 2016 | 0 | 3 |
| 2020s | 0 | 18 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2000, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2000 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1999 | Archived |
Enforcement actions
New York regulators took 1 formal enforcement action against Greenlawn Water District and issued 1 boil water order between 2010 and 2025. The most recent was a compliance order with a penalty in April 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 1, 2025 | New York | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Jun 30, 2010 | New York | Boil water order | 1 violation: E. coli |
Where the water comes from
Greenlawn Water District draws water from 14 wells.
Annual water quality report
Greenlawn Water District must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by New York.
Certified drinking water labs by state EPA guidance for private wells