Background Information

Table of Contents

Why We Have Advisories

Fishing is fun and fish are an important part of a healthy diet. Fish contain high quality protein, essential nutrients, healthy fish oils, and are low in saturated fat. However, some fish contain chemicals at levels that may be harmful to health.

To help people make healthier choices about which fish to eat, the New York State Department of Health (NYS DOH) issues advice about eating sportfish (fish you catch). People can get the health benefits of fish and reduce their exposures to chemicals, or contaminants, by following the NYS DOH advice. The advisories tell people which fish to avoid and how to reduce their exposures to contaminants in the fish they do eat.

Fish from fresh waters are more likely to be contaminated than fish from remote marine waters because many fresh waters are close to human activities and contamination sources. Anglers (and others who eat fish caught by friends and family) often eat fish from a limited set of waters because they tend to return to favorite fishing locations. When those fishing locations contain fish with higher contaminant levels, the people who eat them will have higher contaminant exposures.

NYS DOH also issues advice about game, such as snapping turtles and wild waterfowl. Game may also contain chemicals at levels of concern.

Procedures for Setting Advisories

In New York State, these advisories are primarily based on information that NYS DEC gathers on contaminant levels in fish and game. NYS DEC collects fish samples each year from different waterbodies. In recent years, NYS DEC has annually collected approximately 1,500 fish from more than 50 locations/waters and analyzed these fish for various contaminants. Sampling focuses on waterbodies with known or suspected contamination, waterbodies susceptible to mercury contamination, popular fishing waters and waters where trends in fish contamination are being monitored. Also, testing focuses on those species that are most likely to be caught and eaten by sport anglers. NYS DEC also tests some game species (e.g., waterfowl, snapping turtles) that accumulate chemical contaminants.

Health Risks from Contaminants in Fish and Game

The primary contaminants of concern in New York State fish are mercury and PCBs. Other contaminants such as cadmium, chlordane, DDT, dieldrin, dioxin and mirex are also concerns in fish from some of the State's waterbodies. These chemicals build up in your body over time. Health problems that may result from these contaminants range from small changes in health that are hard to detect to birth defects and cancer.

Women of childbearing age (under 50) and children under 15 are advised to limit the kinds of fish they eat and how often they eat them. Women who eat highly contaminated fish and become pregnant may have an increased risk of having children who are slower to develop and learn. Chemicals may have a greater effect on the development of young children or unborn babies. Also, some chemicals may be passed on in mother’s milk.

Women beyond their childbearing years and men may face fewer health risks from some chemicals. For that reason, the advice for women over age 50 and men over age 15 allows them to eat more kinds of sportfish and more often (see Information on Chemicals in Sportfish and Game for more information).

Types of Advisories

picture of a fish

New York is a water-rich state: 2.6 million acres of water on Lakes Erie, Ontario, and Champlain; approximately 0.75 million acres on more than 4,000 smaller lakes; 70,000 miles of streams and rivers in 15 major watersheds; 150 tidal miles of the Hudson River estuary; and 1.1 million acres of marine waters extending three miles from shore. Many species of fish are sought by anglers in these waters. To help anglers choose which fish to keep for food, NYS DOH has two types of health advice:

1. General Advice

The general health advisory for sportfish is that people can eat up to four, one-half pound meals a month (which should be spaced out to about a meal a week) of fish from New York State fresh waters and some marine waters near the mouth of the Hudson River. If there is no specific advice for a particular waterbody, follow this general advice.

There are many fishing spots in New York, and not all locations or fish are tested. We know that some chemicals (e.g., mercury and PCBs) are commonly found in New York State fish. Fish may also contain other contaminants, particularly in heavily populated areas of the state. For these reasons, we issue this general advice to reduce the risk to people from consuming unhealthy levels of chemicals or other contaminants.

2. Specific Advice

For some waterbodies in New York, NYS DOH issues stricter advice (eat a limited amount or none at all) because contaminant levels in some fish are higher. To be more protective, NYS DOH advises that infants, children under the age of 15 and women under age 50 should not eat any fish from these waterbodies.

  • The information on this website will help you find where these waterbodies are located in New York State and the specific advice for what should or should not be eaten. In some cases, enough information is available to issue advisories based on the length of the fish. Older (larger) fish are often more contaminated than younger (smaller) fish.
  • There is also specific advice for certain regions. For example, some fish from the Adirondack and Catskill Mountain regions have been shown to have higher levels of mercury in their flesh than similar fish from other regions in the state.