| Thurston Woods obtains its water from two bedrock wells. Bedrock Well # 1 is located 50 feet north of the pump house and is 760 feet deep and yields 10 gallons per minute. Bedrock Well # 2 is located 60 feet north of the pump house and is 447 feet deep and yields 20 gallons per minute. Current water treatment consists of chlorine for disinfection, aeration to remove radon, and an arsenic removal system. | |||||||||||
| THURSTON WOODS | |||||||||||
| EPA # 1332050 | |||||||||||
| Inorganic Contaminants | Units | MCLG | MCL | Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||
| Nitrate as Nitrogen | ppm | 10 | 10 | 0.35 | n/a | 2006 | NO | Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits. | |||
| Radiological Contaminants | Units | MCLG | MCL | Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||
| Combined Radium | pCi/L | 0 | 5 | 2.1 | nd - 2.1 | 2006 | NO | Erosion of natural deposits | |||
| Radon | pCi/L | Not Regulated | 567 | nd - 567 | 2006 | n/a | Erosion of natural deposits | ||||
| Radon is a radioactive gas that you can't see, taste or smell. It can move up through the ground and into a home through cracks and holes in the foundation. Radon can also get into indoor air when released from tap water from showering, washing dishes, and other household activities. It is a known human carcinogen. Breathing radon can lead to lung cancer. Drinking water containing radon may cause an increased risk of stomach cancer. Presently EPA is reviewing a standard for radon in water. | |||||||||||
| Volatile Organic Contaminants | Units | MCLG | MCL | Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||
| Total Trihalomethanes (TTHMs) | ppb | n /a | 80 | 1.8 | 1.1 to 1.8 | 2005 | NO | By-product of drinking water chlorination. | |||
| Haloacetic Acids (HAA5) | ppb | n/a | 60 | 1.8 | n/a | 2005 | NO | By-product of drinking water chlorination. | |||
| Volatile Organic Contaminants | Units | MRDLG | MRDL | Average Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||
| Chlorine | ppm | 4 | 4 | 0.46 | 0.28 to 0.7 | 2006 | NO | Water additive used to control microbes | |||
| Source Assessment Information | |||||||||||
| Summary of Susceptibility Factors | |||||||||||
| Source Name | Date | Low | Med | High | |||||||
| Bedrock Well # 1 | 2/28/06 | 9 | 3 | 0 | |||||||
| Bedrock Well # 2 | 2/28/06 | 9 | 3 | 0 | |||||||
| The complete Assessment Report is available for inspection. For more information call Gary Tetley or visit NH DES's Drinking Water Source Assessment Program web site at www.des.state.nh.us/dwspp | |||||||||||