Public water system record
Riverhead Water District
Serves Calverton, Riverhead, Wading River and 4 more places, Suffolk County, NY · 35,000 people served
Federal records show 1 health-based violation and 1 monitoring/reporting issue for Riverhead Water District in the last ten years. The most serious issue in this window was a resolved Nitrite violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 1
Key facts
- Riverhead Water District draws water from 15 wells (1 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Nitrite, 2 mg/L, federal limit 1 mg/L (2 times the limit), 2023.
- Record on file since 2010, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 3,253 unknown out of 12,080 service lines.
Check whether Riverhead 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Nitrite
Contaminant limit exceeded
Measured 2 mg/L, federal limit 1 mg/L (2 times the limit)
|
330 | Jul 1, 2023 | Resolved | Yes |
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
|
Jul 1, 2023 | Resolved |
Full record since 2010
EPA's records for Riverhead Water District go back to 2010. Before October 19, 2016 they list no health-based violations and 49 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2010 to October 18, 2016 | 0 | 49 |
| 2020s | 1 | 1 |
What the violations mean
Nitrite
1 incidentNitrite exceeded the federal limit
High nitrite is especially dangerous for infants under 6 months
Where the water comes from
Riverhead Water District draws water from 15 wells (1 of them for emergency, seasonal or other part-time use). 1 other community water system buys water from Riverhead Water District.
Community systems that buy water from it
- Riverside Water District Hauppauge, NY
Annual water quality report
Riverhead 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