| Gage
Hill |
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EPA # 1852020 |
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| Inorganic
Contaminants |
Date(s)
Collected |
Highest
Detect |
Range
Detected |
MCL or MRDL |
MCLG or MRDLG |
Violation
Yes/No |
Typical Source of Contaminant |
| Barium
(ppm) |
2/3/10 |
0.020 |
N/A |
2 |
2 |
No |
Erosion of natural deposits |
| Nitrate
as Nitrogen (ppm |
2/3/10 |
2.37 |
N/A |
10 |
10 |
No |
Runoff from fertilizer use; leaching from
septic tanks, sewage; erosion of natural deposits. |
| Sodium (ppm) |
2/3/10 |
29.3 |
N/A |
Not Regulated |
N/A |
Natural sources; runoff from use as salt on
roadways; by-product of treatment process |
| Thallium (ppb) |
2/3/10 3/24/10 |
1 |
nd - 1 |
2 |
0.5 |
No |
Leaching from ore-processing sites; Discharge
from electronics, glass, and drug factories |
| Volatile Organic
Contaminants |
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| Chlorine (ppm) |
2010 |
0.33 Avg |
nd - 0.5 |
4 |
4 |
No |
Water additive used to control microbes |
| Total
Trihalomethanes (ppb) |
8/18/10 |
0.7 |
N/A |
80 |
0 |
No |
By-product of drinking water chlorination |
| Radiological
Contaminants |
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| Compliance Gross Alpha
(pCi/L) |
2005 |
7.2 |
1.0 - 7.2 |
15 |
0 |
No |
Erosion of natural deposits |
| Radium
226 & 228 (pCi/L) |
2005 |
0.8 |
0.6 - 0.8 |
5 |
0 |
No |
Erosion of natural deposits |
| Uranium
(ppb) |
1/31/08 |
18 |
N/A |
30 |
0 |
No |
Erosion of natural deposits |
| Radon
(pCi/L) |
4/21/10 |
489 |
564 - 633 |
Not Regulated |
N/A |
Erosion of natural deposits |
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Date(s)
Collected |
90th
Percentile |
Action Level |
MCLG |
# of Sites
Sampled |
# Sites Above
Action Level |
Violation
Yes/No |
Typical Source of Contaminant |
| Lead (ppb) |
5/2008 |
< 5 |
15 |
0 |
5 |
0 |
No |
Corrosion of household plumbing system |
| Copper
(ppm) |
5/2008 |
0.221 |
1.3 |
1.3 |
5 |
0 |
No |
Corrosion of household plumbing system |
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| What is the
source of my drinking water? |
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| The source of the Gage Hill water supply is the Gage Hill well
and pump house located on Vassar Drive off Route 38 in Pelham, NH. Bedrock well # 1 is located 3 feet east of
the pump house. Treatment consists of
chlorine for disinfection, packed tower aeration for radon removal, and
phosphate addition to control corossion. |
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| Source Water
Assessment Summary |
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Summary of Susceptibility Factors |
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| Source
Name |
Date |
Low |
Med |
High |
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| Bedrock
Well # 1 |
12/17/01 |
9 |
2 |
1 |
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| 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 |
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