Community Water System · PWS NY5103276
Dix Hills Water District
Operator location Huntington, New York - UCMR5 detected 1 PFAS compound (lower-third PFAS panel (≤ 2 compounds)) on this PWS; SDWIS lists 89 violations and 34,522 people served.
- 34,522
- People served (this PWS)
- 89
- EPA violations (this PWS)
- 11
- Health-based (this PWS)
- 1 PFAS
- UCMR5 (this PWS)
Dix Hills Water District standing, high SDWIS violation third
UCMR5 detected 1 PFAS compound - lower-third PFAS panel (≤ 2 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 12% is middle-third health share (≤ 23%). UCMR5: lower-third PFAS panel (≤ 2 compounds). Population rank #1,623 of 29,740 among systems serving 500+.
The verdict
Dix Hills Water District sits in the upper third of the sitemap cohort by violation count (89), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (34,522; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 12% (middle-third health share (≤ 23%)). UCMR5 detected 1 PFAS compound (lower-third PFAS panel (≤ 2 compounds)).
- #1,623 of 29,740
- Population · /systems
- #49 of 1,204
- Population · NY
- 89
- Total EPA violations on record
- 12%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 8,549
- County
- Suffolk
- School/Daycare
- No
- MCL Violations
- 11
- Monitoring Violations
- 51
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 11 | 2011 |
| Consumer Confidence Rule | Other | 3 | 2010 |
| Nitrate-Nitrite | MR | 3 | 2012 |
| Cadmium | MR | 3 | 2012 |
| Chromium | MR | 3 | 2012 |
| Fluoride | MR | 3 | 2012 |
| Mercury | MR | 3 | 2012 |
| Antimony, Total | MR | 3 | 2012 |
| Beryllium, Total | MR | 3 | 2012 |
| Thallium, Total | MR | 3 | 2012 |
| Selenium | MR | 3 | 2012 |
| TTHM | MR | 3 | 2012 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2012 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Radium-228 | MR | 3 | 2007 |
| Barium | MR | 3 | 2012 |
| Nickel | MR | 3 | 2012 |
| Arsenic | MR | 3 | 2012 |
| CYANIDE | MR | 3 | 2012 |
Violation Count vs. the National Corpus
Dix Hills Water District has 89 recorded EPA violations, 71% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 29% carry more. 12% of this system's own violations are health-based (11 of 89), and it ranks #1,623 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
89 Around the middle fewer violations than 29% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 348 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFPeS | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMPA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 6/24/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 6/24/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/24/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 8:2 FTS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 6/24/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFNA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFBA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 4:2 FTS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 6/24/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 6/24/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| HFPO-DA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFDoA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 5/5/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 5/5/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/5/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 5/5/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 5/5/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 5/5/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 5/5/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 5/5/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NMeFOSAA | 5/5/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFMBA | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 5/5/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFEESA | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 5/5/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 5/5/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 5/5/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 5/5/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| 4:2 FTS | 5/5/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
UCMR5 PFAS record for Dix Hills Water District
Open EPA SDWIS federal reports for PWS NY5103276 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · New York State Department of Health, Public Water Systems
Nationwide peers
89 violations · 34,522 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Dix Hills Water District
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in New York compares on the same EPA violation measures. New York systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.