| Castle Reach | EPA # 2542140 | ||||||||
| Inorganic Contaminants | Date Collected | Highest Detect | Range Detected | MCL or MRDL | MCLG or MRDLG | Violation Yes/No | Typical Source of Contaminant | ||
| Fluoride (ppm) | 8/25/09 | 0.34 | N/A | 4 | 4 | No | Erosion of natural deposits | ||
| Sodium (ppm) | 8/25/09 | 18.7 | N/A | Not Regulated | N/A | Natural sources; runoff from use as salt on roadways; by-product of treatment process | |||
| Volatile Organic Contaminants | |||||||||
| Chlorine (ppm) | 2010 | 0.38 Avg | 0.1 - 1.5 | 4 | 4 | No | Water additive used to control microbes | ||
| Total Trihalomethanes (ppb) | 8/25/10 | 16 | N/A | 80 | 0 | No | By-product of drinking water chlorination | ||
| Haloacetic Acids (ppb) | 8/25/10 | 1.3 | N/A | 60 | 0 | No | By-product of drinking water chlorination | ||
| Radiological Contaminants | |||||||||
| Radium 226 & 228 (pCi/L) | 2/20/07 | 0.5 | N/A | 5 | 0 | No | Erosion of natural deposits | ||
| Uranium (ppb) | 2/20/07 | 2.8 | N/A | 30 | 0 | No | Erosion of natural deposits | ||
| Radon (pCi/L) | 4/11/07 | 448 | N/A | Not Regulated | N/A | Erosion of natural deposits | |||
| Date Collected | 90th Percentile | Action Level | MCLG | # of Sites Sampled | # Sites Above Action Level | Violation Yes/No | Typical Source of Contaminant | ||
| Lead (ppb) | 2/4/10 | < 5 | 15 | 0 | 7 | 0 | No | Corrosion of household plumbing system | |
| Copper (ppm) | 2/4/10 | 0.658 | 1.3 | 1.3 | 7 | 0 | No | Corrosion of household plumbing system | |
| What is the source of my drinking water? | |||||||||
| The source of the Castle Reach water supply is three wells located off Searles Road in Windham, NH. Bedrock well # 4 is located 400' northwest of the pump house, bedrock well # 1 is located 49' northwest of the pump house, and well # 2 is located 243' north of the pump house. Current water treatment consists of chlorination for disinfection; the addition of a blended phosphate for corrosion control and sequestering iron and manganese; and a Calcite filter for additional corrosion control. | |||||||||
| Source Water Assessment Summary | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 1 - 001 | 3/1/06 | 9 | 2 | 1 | |||||
| Bedrock Well # 2 - 002 | 3/1/06 | 9 | 2 | 1 | |||||
| Bedrock Well # 4 - 003 | 3/1/06 | 9 | 2 | 1 | |||||
| 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 | |||||||||