Community Water System · PWS NJ0228001
Ho Ho Kus Water Dept
Operator location Hohokus Boro, New Jersey - UCMR5 detected 9 PFAS compounds (upper-third PFAS panel (> 4 compounds)) on this PWS; SDWIS lists 137 violations and 4,060 people served.
- 4,060
- People served (this PWS)
- 137
- EPA violations (this PWS)
- 4
- Health-based (this PWS)
- 9 PFAS
- UCMR5 (this PWS)
Ho Ho Kus Water Dept standing, high SDWIS violation third
UCMR5 detected 9 PFAS compounds - upper-third PFAS panel (> 4 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #8,772 of 29,740 among systems serving 500+.
The verdict
Ho Ho Kus Water Dept sits in the upper third of the sitemap cohort by violation count (137), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (4,060; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 3% (middle-third health share (≤ 23%)). UCMR5 detected 9 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #8,772 of 29,740
- Population · /systems
- #238 of 689
- Population · NJ
- 137
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
9 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,514
- County
- Bergen
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 109
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 23 | 2006 |
| Groundwater Rule | MR | 21 | 2013 |
| Chlorine | MR | 16 | 2025 |
| Combined Uranium | MR | 9 | 2008 |
| Combined Radium (-226 and -228) | MR | 6 | 2008 |
| Consumer Confidence Rule | Other | 5 | 2013 |
| Gross Alpha, Excl. Radon and U | MR | 5 | 2008 |
| TTHM | MR | 5 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2014 |
| Coliform (TCR) | MCL | 4 | 2012 |
| Lead and Copper Rule | MR | 3 | 2019 |
| Arsenic | MR | 2 | 1988 |
| Selenium | MR | 2 | 1988 |
| Fluoride | MR | 2 | 1988 |
| Chromium | MR | 2 | 1988 |
| Cadmium | MR | 2 | 1988 |
| Barium | MR | 2 | 1988 |
| Mercury | MR | 2 | 1988 |
| E. COLI | MR | 1 | 2012 |
| Coliform (TCR) | MR | 1 | 2012 |
Violation Count vs. the National Corpus
Ho Ho Kus Water Dept has 137 recorded EPA violations, 79% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 20% carry more. 3% of this system's own violations are health-based (4 of 137), and it ranks #8,772 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)
137 Higher than most more violations than 79% 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. 68 of 232 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NEtFOSAA | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 8/14/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFTA | 8/14/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 8/14/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NFDHA | 8/14/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| NMeFOSAA | 8/14/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFHpA | 8/14/2023 | 8.10 ppt | 3.00 ppt | Detected |
| PFHxS | 8/14/2023 | 5.50 ppt | 3.00 ppt | Detected |
| PFNA | 8/14/2023 | 4.70 ppt | 4.00 ppt | Detected |
| PFOS | 8/14/2023 | 21.00 ppt | 4.00 ppt | Detected |
| PFOA | 8/14/2023 | 29.30 ppt | 4.00 ppt | Detected |
| PFDA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 8/14/2023 | 4.80 ppt | 3.00 ppt | Detected |
| PFHxA | 8/14/2023 | 12.40 ppt | 3.00 ppt | Detected |
| PFHpS | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/14/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 8/14/2023 | 9.40 ppt | 5.00 ppt | Detected |
| 6:2 FTS | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 8/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 8/14/2023 | 14.00 ppt | 3.00 ppt | Detected |
| PFEESA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 8/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 8/14/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| ADONA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 8/14/2023 | 7.00 ppt | 5.00 ppt | Detected |
| 6:2 FTS | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 8/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 8/14/2023 | 9.20 ppt | 3.00 ppt | Detected |
| PFHpS | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 8/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFUnA | 8/14/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMBA | 8/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 8/14/2023 | 5.50 ppt | 3.00 ppt | Detected |
| 9Cl-PF3ONS | 8/14/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFTrDA | 8/14/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 8/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 8/14/2023 | 4.60 ppt | 3.00 ppt | Detected |
| PFTA | 8/14/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
UCMR5 PFAS record for Ho Ho Kus Water Dept
Open EPA SDWIS federal reports for PWS NJ0228001 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · NJ DEP, Bureau of Safe Drinking Water
Nationwide peers
137 violations · 4,060 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 Ho Ho Kus Water Dept
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in New Jersey compares on the same EPA violation measures. New Jersey 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.