North Conway Water
Precinct Water Quality Report 2003
The North Conway Water Precinct derives its water from a series of gravel packed wells (groundwater) located within the Saco River Basin. These wells are located within the floodplain and range in depth from 80' to 115' with a yield of between 300 and 1400 gallons per minute. Information concerning the location and wellhead protection / monitoring may be obtained directly from the Precinct Superintendent.
Drinking water, including bottled water, may reasonably be expected to contain at least small amount of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency's Safe Drinking Water Hotline (1-800-426-4791).
|
Contaminant |
Violation Y/N |
Level Detected/ Range of Detection |
Unit Meas. |
MCLG |
MCL |
Likely Source of Contamination |
|
Microbiological Contaminants |
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|
Total Coliform Bacteria (% positive samples) |
N |
0 |
Presence of coliform bacteria in > or = 5% of compliance samples |
Naturally present in the environment |
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|
|
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|
Turbidity |
N |
N/A |
TT |
Soil Runoff |
||
|
|
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|
Fecal coliform and E coli |
N |
0 |
A routine sample and repeat sample are total coliform positive, and one is also fecal coliform or E. coli positive. |
Human and fecal waste | ||
|
Radioactive Contaminants |
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|
Beta/photon emitters |
N |
mrem/yr |
0 |
4 |
Decay of natural and man-made deposits |
|
|
Alpha emitter |
N |
<1.0 |
pCi/1 |
0 |
15 |
Erosion of natural deposits |
|
Combined radium |
N |
pCi/1 |
0 |
5 |
Erosion of natural deposits |
|
|
Inorganic Contaminants |
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|
Antimony |
N |
2.00 |
ppb |
6 |
6 |
Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder |
|
Arsenic |
N |
5.00 |
ppb |
n/a |
50 |
Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes |
|
Asbestos |
N |
0.18 |
MFL |
7 |
7 |
Decay of asbestos cement water mains; erosion of natural deposits |
|
Barium |
N |
0.100 |
ppm |
2 |
2 |
Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits |
|
Beryllium |
N |
1.0 |
ppb |
4 |
4 |
Discharge from metal refineries and coal burning factories; discharge from electrical, aerospace and defense industries |
|
Cadmium |
N |
1.0 |
ppb |
5 |
5 |
Corrosion of galvanize pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints |
|
Chromium |
N |
10.0 |
ppb |
100 |
100 |
Discharge from steel and pulp mills; erosion of natural deposits |
|
Copper |
N |
0.050 |
ppm |
1.3 |
AL=1.3 |
Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives |
|
Cyanide |
N |
40.00 |
ppb |
200 |
200 |
Discharge from steel/metal factories; discharge from plastic and fertilizer factories |
|
Fluoride |
N |
1.21 |
ppm |
4 |
4 |
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories |
|
Lead |
N |
5.0 |
ppb |
0 |
AL=15 |
Corrosion of household plumbing systems; erosion of natural deposits |
|
Mercury (Inorganic) |
N |
1.0 |
ppb |
2 |
2 |
Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland |
|
Nitrate (as Nitrogen) |
N |
<.50 |
ppm |
10 |
10 |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits |
|
Nitrite (as Nitrogen) |
N |
ppm |
1 |
1 |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits |
|
|
Selenium |
N |
5.0 |
ppb |
50 |
50 |
Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines |
|
Thallium |
N |
1.0 |
ppb |
0.5 |
2 |
Leaching from ore-processing sites; discharge from electronics, glass and drug factories |
|
Synthetic Organic Contaminants including Pesticides and Herbicides |
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|
2,4-D |
N |
Nd |
ppb |
70 |
70 |
Runoff from herbicide used on row crops |
|
2,4,5-TP (Silvex) |
N |
Nd |
ppb |
50 |
50 |
Residue of banned herbicide |
|
Acrylamid |
N |
Nd |
ppb |
0 |
TT |
Added to water during sewage/wastewater treatment |
|
Alachlor |
N |
Nd |
ppb |
0 |
2 |
Runoff from herbicide used on row crops |
|
Atrazine |
N |
Nd |
ppb |
3 |
3 |
Runoff from herbicide used on row crops |
|
Benzo(a)pyrene (PAH) |
N |
Nd |
ppt |
0 |
200 |
Leaching from linings of water storage tanks and distribution lines |
|
Carbofuran |
N |
Nd |
ppb |
40 |
40 |
Leaching of soil fumigant used on rice and alfalfa |
|
Chlordane |
N |
Nd |
ppb |
0 |
2 |
Residue of banned termiticide |
|
Dalapon |
N |
Nd |
ppb |
200 |
200 |
Runoff from herbicide used on rights of way |
|
Di(2-ethylhexyl) adipate |
N |
Nd |
ppb |
400 |
400 |
Discharge from chemical factories |
|
Di(2-ethylhexyl) phthalate |
N |
Nd |
ppb |
0 |
6 |
Discharge from rubber and chemical factories |
|
Dibromochloropropane |
N |
Nd |
ppt |
0 |
200 |
Runoff/leaching from soil fumigant used on soybeans, cotton, pineapples, and orchards |
|
Dinoseb |
N |
Nd |
ppb |
7 |
7 |
Runoff from herbicide used on soybeans and vegetables |
|
Diquat |
N |
Nd |
ppb |
20 |
20 |
Runoff from herbicide use |
|
Dioxin [2,3,7,8-TCDD] |
N |
Nd |
ppq |
0 |
30 |
Emissions from waste incineration and other combustion; discharge from chemical factories |
|
Endothall |
N |
Nd |
ppb |
100 |
100 |
Runoff from herbicide use |
|
Endrin |
N |
Nd |
ppb |
2 |
2 |
Residue of banned insecticide |
|
Epichlorohydrin |
N |
Nd |
ppb |
0 |
TT |
Discharge from industrial chemical factories; an impurity of some water treatment chemicals |
|
Ethylene dibromide |
N |
Nd |
ppt |
0 |
50 |
Discharge from petroleum refineries |
|
Glyphosate |
N |
Nd |
ppb |
700 |
700 |
Runoff from herbicide use |
|
Heptachlor |
N |
Nd |
ppt |
0 |
400 |
Residue of banned termiticide |
|
Heptachlor epoxide |
N |
Nd |
ppt |
0 |
200 |
Breakdown of heptachlor |
|
Hexachlorobenzene |
N |
Nd |
ppb |
0 |
1 |
Discharge from metal refineries and agricultural chemical factories |
|
Hexachlorocyclopentadiene |
N |
Nd |
ppb |
50 |
50 |
Discharge from chemical factories |
|
Lindane |
N |
Nd |
ppt |
200 |
200 |
Runoff/leaching from insecticide used on cattle, lumber, gardens |
|
Methoxychlor |
N |
Nd |
ppb |
40 |
40 |
Runoff/leaching from insecticide used on fruits, vegetables, alfalfa, livestock |
|
Oxamyl [Vydate] |
N |
Nd |
ppb |
200 |
200 |
Runoff/leaching from insecticide used on apples, potatoes and tomatoes |
|
PCB's [Polychlorinated biphenyls] |
N |
Nd |
ppb |
0 |
500 |
Runoff from landfills; discharge of water chemicals |
|
Pentachlorophenol |
N |
Nd |
ppb |
0 |
1 |
Discharge from wood preserving factories |
|
Picloram |
N |
Nd |
ppb |
500 |
500 |
Herbicide runoff |
|
Simazine |
N |
Nd |
ppb |
4 |
4 |
Herbicide Runoff |
|
Toxaphene |
N |
Nd |
ppb |
0 |
3 |
Runoff/Leaching from insecticide used on cotton and cattle |
|
Volatile Organic Contaminants |
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|
Benzene |
N |
Nd |
ppb |
0 |
5 |
Discharge from factories; leaching from gas storage tanks and landfills |