Beach Water Quality at the Jersey Shore
Comprehensive water quality data for 268 monitoring stations. Make informed decisions about where to swim with 5 years of historical data.
Understanding Beach Water Quality
The New Jersey Department of Environmental Protection (NJDEP) monitors water quality at public beaches through the Cooperative Coastal Monitoring Program (CCMP). Testing focuses on Enterococcus bacteria, an indicator of water contamination that can affect swimmers.
What the Ratings Mean
Consistently clean water with no recent advisories
Clean water with minimal concerns
Generally safe, exercise caution after rainfall
Check current conditions before swimming
When to Exercise Caution
- 24-48 hours after heavy rainfall - Stormwater runoff can temporarily increase bacteria levels
- Near inlets or stormwater outflows - These areas may have higher bacteria concentrations
- If you see discoloration or debris - Visual signs may indicate water quality issues
Note: Most rainfall-related closures are precautionary measures, not reactions to detected problems. New Jersey beaches are generally safe and well-monitored.
Water Quality by Rating
Monitoring Station Map
Explore water quality at all 268 monitoring stations. Click on any marker to view details. Colors indicate water quality rating.
Search All Stations
Filter by rating, county, or search by beach name
Top Rated Beaches
Lowest bacteria levelsWater Quality by County
Compare All Counties →Monmouth County
63 monitoring stations
Ocean County
66 monitoring stations
Atlantic County
50 monitoring stations
Cape May County
88 monitoring stations
Beaches Requiring Attention
These stations have fair or poor ratings. Check current conditions before swimming.
Frequently Asked Questions
Is it safe to swim at New Jersey beaches?▼
Yes, the vast majority of New Jersey beaches have excellent or good water quality. 97% of monitored stations meet or exceed quality standards. The NJDEP actively monitors conditions and issues advisories when needed.
What causes beach water quality advisories?▼
Advisories are typically issued when Enterococcus bacteria levels exceed EPA standards. Common causes include stormwater runoff after heavy rain, wildlife, and in rare cases, sewage overflows. Most advisories are precautionary and lifted within 24-48 hours.
Why do beaches close after rain?▼
Rainfall closures are precautionary measures. Stormwater runoff can wash bacteria from land into the ocean. Rather than wait for test results (which take 24 hours), beaches may close temporarily as a safety measure. These are preventive, not reactive closures.
How often is water quality tested?▼
During beach season (typically Memorial Day through Labor Day), water samples are collected at least weekly at each monitoring station. High-traffic beaches may be tested more frequently. Results are reported within 24 hours of sampling.
What is Enterococcus and why is it tested?▼
Enterococcus is a type of bacteria found in the intestines of humans and animals. While not typically harmful itself, its presence in water indicates possible contamination with fecal matter, which could contain pathogens. The EPA recommends Enterococcus as the best indicator for marine water quality.
Beach Safety Essentials
Stay prepared with these beach safety items. Waterproof phone cases let you check conditions on the go, while reef-safe sunscreen protects both you and the ocean.
Water Quality Test Kit
Test bacteria, pH, and other water quality indicators at any beach.
Reef-Safe Sunscreen
Protect yourself and the ocean. No oxybenzone or octinoxate.
Waterproof Phone Case
Check water quality alerts and forecasts even in the water.
UPF 50+ Rash Guard
Sun protection and jellyfish sting prevention while swimming.
Waterproof First Aid Kit
Compact kit for beach emergencies. Waterproof case essential.
Adult Life Jacket / PFD
USCG approved for swimming in unfamiliar waters or rough conditions.
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Data Source
Data provided by the New Jersey Department of Environmental Protection (NJDEP) Cooperative Coastal Monitoring Program (CCMP). The CCMP assesses water quality at public coastal recreational bathing beaches and provides public notification. Learn more about the program →