Public water system record
Suffolk County Water Authority
Serves Manorville, Coram, Yaphank and 125 more places, Suffolk County, NY · 1,100,000 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Suffolk County Water Authority in the last ten years. The most serious issue in this window was a resolved Asbestos violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Suffolk County Water Authority draws water from 622 wells (16 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Asbestos, 26.62 million fibers per liter, federal limit 7 million fibers per liter (3.8 times the limit), 2020.
- Record on file since 1985, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 11 lead and 54 unknown out of 396,459 service lines.
Check whether Suffolk County Water Authority 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Asbestos
Contaminant limit exceeded
Measured 26.62 million fibers per liter, federal limit 7 million fibers per liter (3.8 times the limit)
|
330 | Jul 1, 2020 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 1985
EPA's records for Suffolk County Water Authority go back to 1985. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 6 |
| 2000s | 2 | 1 |
| October 19, 2016 to 2019 | 0 | 2 |
| 2020s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2006, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2006 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11.11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jan 1, 2002 | Resolved |
What the violations mean
Asbestos
1 incidentAsbestos exceeded the federal limit
Long-term exposure above the limit may increase the risk of benign intestinal polyps
Where the water comes from
Suffolk County Water Authority draws water from 622 wells (16 of them for emergency, seasonal or other part-time use). 3 other community water systems buy water from Suffolk County Water Authority.
Community systems that buy water from it
- Greenport Water District Greenport, NY
- Smithtown Water District Kings Park, NY
- St James Water District Kings Park, NY
Annual water quality report
Suffolk County Water Authority 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