Community Water System · PWS NJ1426005
Mount Arlington Boro Dpw Main
Operator location Mount Arlington, New Jersey - upper-third violation load (> 74 violations) with 75 EPA violations; groundwater source; 1,978 served (PWS-level, not municipal population).
- 1,978
- People served (this PWS)
- 75
- EPA violations (this PWS)
- 16
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Mount Arlington Boro Dpw Main standing, high SDWIS violation third
75 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 21% is middle-third health share (≤ 23%). UCMR5: UCMR5 tested, none detected. Population rank #13,756 of 29,740 among systems serving 500+.
The verdict
Mount Arlington Boro Dpw Main sits in the upper third of the sitemap cohort by violation count (75), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,978 (mid served population (≤ 3,309)). Health-based share is 21% (middle-third health share (≤ 23%)). UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #13,756 of 29,740
- Population · /systems
- #316 of 689
- Population · NJ
- 75
- Total EPA violations on record
- 21%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 685
- County
- Morris
- School/Daycare
- No
- MCL Violations
- 16
- Monitoring Violations
- 54
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 21 | 2005 |
| Coliform (TCR) | MCL | 16 | 1996 |
| Chlorine | MR | 11 | 2023 |
| Lead and Copper Rule | MR | 11 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2025 |
| TTHM | MR | 3 | 2025 |
| Revised Total Coliform Rule | MON | 2 | 2024 |
| Nitrate | MR | 1 | 1993 |
| Revised Total Coliform Rule | RPT | 1 | 2024 |
Violation Count vs. the National Corpus
Mount Arlington Boro Dpw Main has 75 recorded EPA violations, 67% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 33% carry more. 21% of this system's own violations are health-based (16 of 75), and it ranks #13,756 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)
75 Around the middle fewer violations than 33% 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. 0 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 11Cl-PF3OUdS | 7/14/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 7/14/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| 8:2 FTS | 7/14/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 7/14/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/14/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 7/14/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 7/14/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 7/14/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 7/14/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 7/14/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxS | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 7/14/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 7/14/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHpS | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 7/14/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFUnA | 7/14/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 7/14/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 7/14/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 7/14/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 7/14/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpA | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 1/13/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 1/13/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTrDA | 1/13/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFHxS | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 1/13/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBS | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 1/13/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 1/13/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 1/13/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFNA | 1/13/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 1/13/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 1/13/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 1/13/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 1/13/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 1/13/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMPA | 1/13/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
SDWIS compliance record for Mount Arlington Boro Dpw Main
75 violations on record for NJ1426005; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS · NJ DEP, Bureau of Safe Drinking Water
Nationwide peers
75 violations · 1,978 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Mount Arlington Boro Dpw Main
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.