What's in RIVERHEAD WATER DISTRICT's water?
RIVERHEAD WATER DISTRICT had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 35,000, over 9,334 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, RIVERHEAD WATER DISTRICT ranks 7,422th by violation burden (42th percentile) - 52 violations total, 1 health-based.
How RIVERHEAD WATER DISTRICT compares within NY
Among the 443 NY systems in this dataset, the average is 4.1 health-based violations - RIVERHEAD WATER DISTRICT's 1 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for RIVERHEAD WATER DISTRICT is from 2023-01-07 (health-based: 2023-01-07). Last reported to EPA: 06/25/2026.
What kind of problem, specifically
RIVERHEAD WATER DISTRICT's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Nitrate / nitrite - flagged from: Nitrite
The most severe category on record is nitrate / nitrite, which points toward a reverse osmosis-class filter if you want to address it directly.
What this data is and is not
RIVERHEAD WATER DISTRICT's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 52 logged violations can see. The guide to what this data misses covers that gap.