| W&E | EPA # 2542030 | ||||||||
| Inorganic Contaminants | Date(s) Collected | Highest Detect | Range Detected | MCL or MRDL | MCLG or MRDLG | Violation Yes/No | Typical Source of Contaminant | ||
| Barium (ppm) | 10/20/09 | 0.092 | nd - 0.092 | 2 | 2 | No | Erosion of natural deposits | ||
| Fluoride (ppm) | 10/20/09 | 0.81 | 0.67 - 0.81 | 4 | 4 | No | Erosion of natural deposits | ||
| Nitrate as Nitrogen (ppm | 10/27/10 11/1/10 | 0.29 | nd - 0.29 | 10 | 10 | No | Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits. | ||
| Sodium (ppm) | 2010 | 142 | 80.2 - 142 | Not Regulated | N/A | Natural sources; runoff from use as salt on roadways; by-product of treatment process | |||
| Volatile Organic Contaminants | |||||||||
| Chlorine (ppm) | 2010 | 0.45 Avg | 0.3 - 0.6 | 4 | 4 | No | Water additive used to control microbes | ||
| Total Trihalomethanes (ppb) | 2010 | 21 | 13 - 21 | 80 | 0 | No | By-product of drinking water chlorination | ||
| Methyl-Tertiary-Butyl Ether (MtBE) (ppb) | 2010 | 0.5 | 0.5 - 0.6 | 13 | 13 | No | Gasoline additive | ||
| Haloacetic Acids (ppb) | 8/10/10 | 2.5 | N/A | 60 | 0 | No | By-product of drinking water chlorination | ||
| Radiological Contaminants | |||||||||
| Compliance Gross Alpha (pCi/L) | 2/12/07 | 6.5 | N/A | 15 | 0 | No | Erosion of natural deposits | ||
| Radium 226 & 228 (pCi/L) | 2/12/07 | 0.1 | N/A | 5 | 0 | No | Erosion of natural deposits | ||
| Uranium (ppb) | 2/12/07 | 1.0 | N/A | 30 | 0 | No | Erosion of natural deposits | ||
| Radon (pCi/L) | 4/19/10 | 1,870 | N/A | Not Regulated | N/A | Erosion of natural deposits | |||
| Date(s) Collected | 90th Percentile | Action Level | MCLG | # of Sites Sampled | # Sites Above Action Level | Violation Yes/No | Typical Source of Contaminant | ||
| Lead (ppb) | 11/11/09 11/12/09 | < 5 | 15 | 0 | 5 | 0 | No | Corrosion of household plumbing system | |
| Copper (ppm) | 11/11/09 11/12/09 | 0.083 | 1.3 | 1.3 | 5 | 0 | No | Corrosion of household plumbing system | |
| What is the source of my drinking water? | |||||||||
| The sources of the W&E water supply are three wells located off West Shore Road in Windham, NH. Well # 3 is located 45 feet southwest of the pump house. Well # 4 is located 107 feet south of the pump house. Well # 6 is located 1,270 feet southwest of the pump house. Treatment consists of manganese green sand filtration to remove iron and manganese, ion exchange to remove hardness from the water, chlorine addition to kill bacteria, and pH adjustment to aid in corrosion control and optimize iron and manganese removal. | |||||||||
| Source Water Assessment Summary | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 3 | 6/10/05 | 5 | 5 | 2 | |||||
| Bedrock Well # 4 | 6/10/05 | 5 | 5 | 2 | |||||
| Bedrock Well # 6 | Not currently available | ||||||||
| The complete Assessment Report is available for review. For more information call Gary Tetley at 800-553-5191 ext. 2378 or visit NH Department of Environmental Services Drinking Water and Groundwater Bureau web site at http://www.des.nh.gov/organization/divisions/water/dwgb/dwspp/reports/index.htm | |||||||||