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If your family gets drinking water from your own well, do you know if your water is safe to drink? What health risks could you and your family face? Where can you go for help or advice? This pamphlet helps answer these questions. It gives you general information about drinking water from home wells (also considered private drinking water sources). It describes types of activities in your area that can create threats to your water supply. It also describes problems to look for and offers maintenance suggestions. Sources for more information and help are also listed. [Editing for clarity by DF are marked by brackets or italics] Initial Source: EPA 816-K-02-003 January 2002 Edits, content addition, & web page design © 2008 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use links at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website. What Is Ground Water And How Can It Be Polluted?Ground water is a resource found under the earth's surface. Most ground water comes from rain and melting snow soaking into the ground. Water fills the spaces between rocks and soils, making an "aquifer". (See Watershed Graphic.) About half of our nation's drinking water comes from ground water. Most is supplied through public drinking water systems. But many families rely on private, household wells and use ground water as their source of fresh water. Ground water - its depth from the surface, quality for drinking water, and chance of being polluted - varies from place to place. Generally, the deeper the well, the better the ground water. The amount of new water flowing into the area also affects ground water quality. Ground water may contain some natural impurities or contaminants, even with no human activity or pollution. Natural contaminants can come from many conditions in the watershed or in the ground. Water moving through underground rocks and soils may pick up magnesium, calcium and chlorides. Some ground water naturally contains dissolved elements such as arsenic, boron, selenium, or radon, a gas formed by the natural breakdown of radioactive uranium in soil. Whether these natural contaminants are health problems depends on the amount of the substance present. 
A "watershed" is the land area where water soaks through the earth filling an underground water supply or aquifer. It is also called a recharge area. The "water table" is the line below which the ground is saturated or filled with water and available for pumping. The water table will fall during dry seasons. A well can pump water from either the saturated zone or an aquifer. Wells must be deep enough to remain in the saturated zone. In addition to natural contaminants, ground water is often polluted by human activities such as
These problems are discussed in greater detail later in this brochure. Suburban growth is bringing businesses, factories and industry (and potential sources of pollution) into once rural areas where families often rely on household wells. Growth is also pushing new home developments onto the edge of rural and agricultural areas. Often municipal water and sewer lines do not extend to these areas. Many new houses rely on wells and septic tanks. But the people buying them may not have any experience using these systems. Most U.S. ground water is safe for human use. However, ground water contamination has been found in all 50 states, so well owners have reason to be vigilant in protecting their water supplies. Well owners need to be aware of potential health problems. They need to test their water regularly and maintain their wells to safeguard their families' drinking water. 
Use links at the left of each page to continue to navigate this document or to view other topics at this website. Green links at page left show where you are in our document or website. More expert information on wells, water testing, and contaminants | |
| WATER TESTING WATER TESTING ADVICE SHOULD YOU TEST YOUR WATER? PUBLIC vs PRIVATE WATER WHEN TO TEST WATER TEST COSTS SPECIAL SITUATION TESTS ARSENIC in WATER BACTERIA TEST GUIDE CHEATING on WATER TESTS CHOICES of WATER TESTS CORRECTING BAD WATER Common Water Tests for Bacteria What to Do About Failed Water Tests When & How to Shock or Chlorinate a Well Acting on Unsatisfactory or Contaminated Water EPA GUIDE to WATER QUALITY FHA WATER TESTS REQUIRED LEAD in WATER, ACTION GUIDE LEAD POISONING SYMPTOMS LEAD TEST VARIATION CAUSES ODORS IN WATER SEWAGE CONTAMINATION TOTAL COLIFORM TESTING WATER CONTAMINANT LEVELS WATER TEST RESULTS, ACTION GUIDE WATER TESTING GUIDE WATER TREATMENT GUIDE WATER TREATMENT EQUIPMENT CHOICES WATER ODORS, CAUSE CURE WATER PUMPS & WELLS WATER QUANTITY GUIDE WATER SOFTENERS WELL SHOCKING GUIDE WELLS CISTERNS & SPRINGS WATER PRESSURE LOSS WATER TANK TYPES WELL CLEARANCE DISTANCES WELL TYPES WELL, PUMP, TANK LIFE More Information InspectAPedia TM Home & Site Map Air Conditioning InspectAPedia Bookstore Electrical Environment Exteriors Heating Home Inspection Insulate Ventilate Interiors Mold Inspect/Test Plumbing Water Septic Roofing Structure Accuracy & Bias Pledge Contact Us |
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03/28/2008 - 12/31/2002 www.inspect-ny.com/water/Water_Pollution_02.htm - Web page design © 2008 Copyright Daniel Friedman All Rights Reserved; content, less minor edits, is US EPA public document EPA 816-K-02-003 January 2002
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