Out of 769 ZIP codes with data in New Jersey, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All New Jersey Rankings
| Statistic | Value |
|---|---|
| ZIP codes ranked | 769 |
| Lowest value | 15/100 |
| Median value | 65/100 |
| State | New Jersey |
100 Lowest-Ranked ZIP Codes
| Rank | ZIP Code | City | State | Reliability Score | Safety Score |
|---|---|---|---|---|---|
| 1 | 07828 | Budd Lake | NJ | 15/100 | 50/100 |
| 2 | 08850 | Milltown | NJ | 15/100 | 56/100 |
| 3 | 07110 | Nutley | NJ | 21/100 | 59/100 |
| 4 | 07460 | Stockholm | NJ | 21/100 | 58/100 |
| 5 | 07930 | Chester | NJ | 22/100 | 66/100 |
| 6 | 07663 | Saddle Brook | NJ | 24/100 | 60/100 |
| 7 | 07826 | Branchville | NJ | 24/100 | 57/100 |
| 8 | 07890 | Branchville | NJ | 24/100 | 56/100 |
| 9 | 08873 | Somerset | NJ | 24/100 | 58/100 |
| 10 | 08875 | Somerset | NJ | 24/100 | 68/100 |
| 11 | 07035 | Lincoln Park | NJ | 25/100 | 36/100 |
| 12 | 07405 | Butler | NJ | 25/100 | 46/100 |
| 13 | 07435 | Newfoundland | NJ | 25/100 | 49/100 |
| 14 | 07461 | Sussex | NJ | 25/100 | 48/100 |
| 15 | 07830 | Califon | NJ | 25/100 | 35/100 |
| 16 | 07849 | Lake Hopatcong | NJ | 25/100 | 35/100 |
| 17 | 08041 | Jobstown | NJ | 25/100 | 71/100 |
| 18 | 08302 | Bridgeton | NJ | 25/100 | 48/100 |
| 19 | 08360 | Vineland | NJ | 25/100 | 65/100 |
| 20 | 08361 | Vineland | NJ | 25/100 | 70/100 |
| 21 | 08362 | Vineland | NJ | 25/100 | 73/100 |
| 22 | 08833 | Lebanon | NJ | 25/100 | 51/100 |
| 23 | 08882 | South River | NJ | 25/100 | 47/100 |
| 24 | 07009 | Cedar Grove | NJ | 26/100 | 66/100 |
| 25 | 08826 | Glen Gardner | NJ | 28/100 | 58/100 |
| 26 | 08723 | Brick | NJ | 29/100 | 49/100 |
| 27 | 08724 | Brick | NJ | 29/100 | 54/100 |
| 28 | 07057 | Wallington | NJ | 30/100 | 55/100 |
| 29 | 07442 | Pompton Lakes | NJ | 30/100 | 50/100 |
| 30 | 07446 | Ramsey | NJ | 30/100 | 64/100 |
| 31 | 07450 | Ridgewood | NJ | 30/100 | 51/100 |
| 32 | 07451 | Ridgewood | NJ | 30/100 | 66/100 |
| 33 | 07803 | Mine Hill | NJ | 30/100 | 57/100 |
| 34 | 07832 | Columbia | NJ | 30/100 | 52/100 |
| 35 | 07844 | Hope | NJ | 30/100 | 62/100 |
| 36 | 07853 | Long Valley | NJ | 30/100 | 48/100 |
| 37 | 07856 | Mount Arlington | NJ | 30/100 | 47/100 |
| 38 | 07866 | Rockaway | NJ | 30/100 | 46/100 |
| 39 | 07962 | Morristown | NJ | 30/100 | 25/100 |
| 40 | 07963 | Morristown | NJ | 30/100 | 25/100 |
| 41 | 08005 | Barnegat | NJ | 30/100 | 66/100 |
| 42 | 08098 | Woodstown | NJ | 30/100 | 66/100 |
| 43 | 08318 | Elmer | NJ | 30/100 | 69/100 |
| 44 | 08804 | Bloomsbury | NJ | 30/100 | 56/100 |
| 45 | 08809 | Clinton | NJ | 30/100 | 46/100 |
| 46 | 07109 | Belleville | NJ | 31/100 | 59/100 |
| 47 | 07848 | Lafayette | NJ | 31/100 | 40/100 |
| 48 | 07871 | Sparta | NJ | 31/100 | 59/100 |
| 49 | 08601 | Trenton | NJ | 33/100 | 85/100 |
| 50 | 08602 | Trenton | NJ | 33/100 | 54/100 |
| 51 | 08603 | Trenton | NJ | 33/100 | 54/100 |
| 52 | 08604 | Trenton | NJ | 33/100 | 60/100 |
| 53 | 08605 | Trenton | NJ | 33/100 | 54/100 |
| 54 | 08606 | Trenton | NJ | 33/100 | 54/100 |
| 55 | 08607 | Trenton | NJ | 33/100 | 54/100 |
| 56 | 08608 | Trenton | NJ | 33/100 | 60/100 |
| 57 | 08609 | Trenton | NJ | 33/100 | 55/100 |
| 58 | 08610 | Trenton | NJ | 33/100 | 55/100 |
| 59 | 08611 | Trenton | NJ | 33/100 | 55/100 |
| 60 | 08618 | Trenton | NJ | 33/100 | 45/100 |
| 61 | 08619 | Trenton | NJ | 33/100 | 45/100 |
| 62 | 08620 | Trenton | NJ | 33/100 | 60/100 |
| 63 | 08625 | Trenton | NJ | 33/100 | 54/100 |
| 64 | 08628 | Trenton | NJ | 33/100 | 50/100 |
| 65 | 08629 | Trenton | NJ | 33/100 | 55/100 |
| 66 | 08638 | Trenton | NJ | 33/100 | 45/100 |
| 67 | 08641 | Trenton | NJ | 33/100 | 54/100 |
| 68 | 08644 | Trenton | NJ | 33/100 | 54/100 |
| 69 | 08645 | Trenton | NJ | 33/100 | 54/100 |
| 70 | 08646 | Trenton | NJ | 33/100 | 54/100 |
| 71 | 08647 | Trenton | NJ | 33/100 | 54/100 |
| 72 | 08650 | Trenton | NJ | 33/100 | 54/100 |
| 73 | 08666 | Trenton | NJ | 33/100 | 54/100 |
| 74 | 08690 | Trenton | NJ | 33/100 | 60/100 |
| 75 | 08691 | Trenton | NJ | 33/100 | 60/100 |
| 76 | 08695 | Trenton | NJ | 33/100 | 54/100 |
| 77 | 07044 | Verona | NJ | 34/100 | 60/100 |
| 78 | 07850 | Landing | NJ | 34/100 | 43/100 |
| 79 | 08057 | Moorestown | NJ | 34/100 | 73/100 |
| 80 | 07418 | Glenwood | NJ | 35/100 | 64/100 |
| 81 | 07940 | Madison | NJ | 35/100 | 57/100 |
| 82 | 08817 | Edison | NJ | 35/100 | 64/100 |
| 83 | 08818 | Edison | NJ | 35/100 | 74/100 |
| 84 | 08820 | Edison | NJ | 35/100 | 64/100 |
| 85 | 08837 | Edison | NJ | 35/100 | 69/100 |
| 86 | 08857 | Old Bridge | NJ | 35/100 | 65/100 |
| 87 | 08867 | Pittstown | NJ | 35/100 | 57/100 |
| 88 | 08884 | Spotswood | NJ | 35/100 | 64/100 |
| 89 | 08899 | Edison | NJ | 35/100 | 74/100 |
| 90 | 07456 | Ringwood | NJ | 36/100 | 72/100 |
| 91 | 07465 | Wanaque | NJ | 36/100 | 75/100 |
| 92 | 07438 | Oak Ridge | NJ | 37/100 | 49/100 |
| 93 | 07715 | Belmar | NJ | 37/100 | 69/100 |
| 94 | 07719 | Belmar | NJ | 37/100 | 54/100 |
| 95 | 07734 | Keansburg | NJ | 37/100 | 46/100 |
| 96 | 07820 | Allamuchy | NJ | 37/100 | 65/100 |
| 97 | 08066 | Paulsboro | NJ | 37/100 | 74/100 |
| 98 | 08203 | Brigantine | NJ | 37/100 | 71/100 |
| 99 | 08559 | Stockton | NJ | 37/100 | 51/100 |
| 100 | 08064 | New Lisbon | NJ | 39/100 | 75/100 |
Methodology
Water system reliability scores (0-100) combine violation frequency, violation recency, resolution rate, and system size. Systems with repeated health-based violations and unresolved issues score lowest. The reliability score focuses specifically on the water utility performance, distinct from the broader Home Safety Score.
Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-06-04.
Frequently Asked Questions
What does a low water reliability score mean?
A low reliability score (below 50) indicates a water system with frequent violations, poor resolution rates, or recurring compliance issues. These systems may have aging infrastructure, inadequate treatment, or management challenges.
How is reliability different from safety score?
The reliability score focuses specifically on the water utility performance (violations, resolution, compliance). The Home Safety Score is broader, also including lead risk, radon, and flood data. A ZIP code can have a reliable water system but still have high radon or flood risk.
Explore More Rankings
- Worst ZIP Codes for Lead in Water in New Jersey
- ZIP Codes with Most EPA Violations in New Jersey
- Lowest Home Safety Scores in New Jersey
- Safest ZIP Codes in New Jersey — Highest Safety Scores
- ZIP Codes with Highest Flood Risk in New Jersey
- ZIP Codes with Highest Energy Costs in New Jersey
- ZIP Codes with Highest Radon Risk in New Jersey
- ZIP Codes with PFAS Detections in New Jersey
- Environmental Justice Concern Areas in New Jersey
- Worst ZIP Codes for Homebuyers in New Jersey
- ZIP Codes with Worst CO & Gas Risk in New Jersey
- Safest ZIP Codes for Gas & CO Risk in New Jersey
- ZIP Codes with Worst Wildfire Smoke Risk in New Jersey
- Safest ZIP Codes for Wildfire Smoke in New Jersey
- All Rankings