| Maple Haven | EPA # 0612170 | ||||||||
| Inorganic Contaminants | Date(s) Collected | Highest Detect | Range Detected | MCL or MRDL | MCLG or MRDLG | Violation Yes/No | Typical Source of Contaminant | ||
| Fluoride (ppm) | 7/28/10 | 0.24 | N/A | 4 | 4 | No | Erosion of natural deposits | ||
| Sodium (ppm) | 7/31/07 | 9.0 | N/A | Not Regulated | N/A | Natural sources; runoff from use as salt on roadways; by-product of treatment process | |||
| Radiological Contaminants | |||||||||
| Compliance Gross Alpha (pCi/L) | 1/11/06 5/4/06 8/27/06 12/4/06 | 2.4 | nd - 2.4 | 15 | 0 | No | Erosion of natural deposits | ||
| Radium 226 & 228 (pCi/L) | 1/11/06 5/4/06 8/27/06 12/4/06 | 2.1 | nd - 2.1 | 5 | 0 | No | Erosion of natural deposits | ||
| Uranium (ppb) | 1/11/06 5/4/06 8/27/06 12/4/06 | 3.8 | 2.2 - 3.8 | 30 | 0 | No | Erosion of natural deposits | ||
| Radon (pCi/L) | 4/5/10 | 731 | 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) | 7/21/09 | < 5 | 15 | 0 | 5 | 0 | No | Corrosion of household plumbing system | |
| Copper (ppm) | 7/21/09 | 0.206 | 1.3 | 1.3 | 5 | 0 | No | Corrosion of household plumbing system | |
| What is the source of my drinking water? | |||||||||
| The source of the Maple Haven water supply is two wells and a pump house located off Nut Meadow Lane in Derry, NH. Well # 2 is located 169 feet north of the pump house. Well # 4 is located 200 feet northeast of the pump house. Treatment consists of phosphate addition to sequester iron and manganese and aid in corrosion control. | |||||||||
| Source Water Assessment Summary | |||||||||
| Summary of Susceptibility Factors | |||||||||
| Source Name | Date | Low | Med | High | |||||
| Bedrock Well # 2 | 11/3/00 | 9 | 0 | 3 | |||||
| Bedrock Well # 4 | 11/3/00 | 9 | 0 | 3 | |||||
| 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 | |||||||||