| The sources of the Hardwood water supply are three wells located off Hickory Lane in Windham, NH. Bedrock Well # 3 is located 300 feet southwest of the pump house. Bedrock Well # 4 is located 330 feet southwest of the pump house. Bedrock Well # 5 is located 345 feet south of the pump house. Treatment consist of chlorine for disinfection, greensand filters to remove iron and manganese, softeners to remove hardness, calcium carbonate addition to increase pH in order to optimize the treatment process and aid corrosion control, and phosphate addition for additional corrosion control. | |||||||||||||||||
| HARDWOOD | |||||||||||||||||
| EPA # 2542060 | |||||||||||||||||
| Inorganic Contaminants | Units | MCLG | MCL | Highest Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||||||||
| Arsenic | ppb | n/a | 10 | 5 | nd to 5 | 2006 | NO | Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes. | |||||||||
| Radiological Contaminants | Units | MCLG | MCL | Highest Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||||||||
| Gross Alpha (Compliance) | pCi/L | 0 | 15 | 2.9 | n/a | 2005 | NO | Erosion of natural deposits | |||||||||
| Combined Radium | pCi/L | 0 | 5 | 0.3 | n/a | 2005 | NO | Erosion of natural deposits | |||||||||
| Uranium | ppb | 0 | 30 | 0.9 | n/a | 2005 | NO | Erosion of natural deposits | |||||||||
| Radon | pCi/L | Not Regulated | 1,840 | n/a | 2005 | 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 | Highest Level Detected | Range | Year | Violation Yes/No | Typical Source of Contaminant | |||||||||
| Total Trihalomethanes (TTHMs) | ppb | n /a | 80 | 14 | n/a | 2005 | NO | By-product of drinking water chlorination. | |||||||||
| Haloacetic Acids (HAA5) | ppb | n/a | 60 | 5.6 | n/a | 2004 | 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 | 0.31 | 0.1 to 0.75 | 2006 | NO | Water additive used to control microbes | |||||||||
| Inorganic Contaminants | Units | MCLG | AL | 90th percentile sample value | # sites above AL | Year | Violation Yes/No | Typical Source of Contaminant | |||||||||
| Copper | ppm | 1.3 | 1.3 | 0.406 | 0 | 2006 | NO | Corrosion of household plumbing system | |||||||||
| Source Assessment Information | |||||||||||||||||
| Summary of Susceptibility Factors | |||||||||||||||||
| Source Name | Date | Low | Med | High | |||||||||||||
| Bedrock Well # 3 | 6/10/05 | 8 | 1 | 3 | |||||||||||||
| Bedrock Well # 4 | 6/10/05 | 8 | 1 | 3 | |||||||||||||
| Bedrock Well # 5 | 6/10/05 | 8 | 1 | 3 | |||||||||||||
| 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 | |||||||||||||||||