
Consumer Confidence Report > Water > For Your Business

The Consumer Confidence Rule requires public water suppliers that serve the same people year round (community water systems) to provide consumer confidence reports (CCR) to their customers. These reports are also known as annual water quality reports or drinking water quality reports. The CCR summarizes information regarding sources used (i.e., rivers, lakes, reservoirs, or aquifers) any detected contaminants, compliance and educational information. The following is ALP's 2006 CCR. Please contact our office if you have any questions..

2006

Annual Drinking Water Report

Alexandria Light and Power

Alexandria Minnesota

The City of Alexandria is pleased to issue the results of monitoring done on its drinking water for the period from January 1 to December 31,

2006 the purpose of this report is to advance consumers’ understanding of drinking water and heighten awareness of the need to protect

precious water resources.

Our water source is groundwater i.e.: (7) wells ranging from 110 - 140 feet deep, that draws water from the Quanternary Buried Artesian

aquifer.

The Minnesota Department of Health has determined that one or more sources of your drinking water is potentially susceptible to

contamination. If you wish to obtain the entire source water assessment regarding your drinking water, please call 651-201-4700 or

1-800-818-9318 (press 5) during normal business hours. Also you can view it on line at www.health.state.mn.us/divs/eh/water/swp/swa.

Alexandria Light and Power routinely monitors for constituents in your drinking water according to Federal and State laws. All drinking

water, including bottled drinking water, may be reasonably expected to contain at least small amounts of some constituents.

It is important to remember that the presence these constituents do not necessarily pose a health risk.

Results of Monitoring

No contaminants were detected at levels that violated Federal drinking standards. However, some contaminants were detected in trace

amounts that were below legal limits. The table that follows shows the contaminants that were detected in trace amounts last year.

(Some contaminants are sampled less frequently than once a year; as a result, not all contaminants were sampled for in 2005. If any of

these contaminants were detected the last time they were sampled for, they are included in the table along with the date that the detection occurred. )

Key to abbreviations:

MRDLG- Maximum Residual Disinfectant Goal

MRDL- Maximum Residual Disinfectant Level

MCLG - Maximum Contaminant Level Goal: The level of a contaminant in drinking water below which there is no known or expected

risk to health. MCLG’s allow for a margin of safety.

MCL - Maximum Contaminant Level: The highest level of a contaminant that is allowed in drinking water. MCL’s are set as close to

the MCLG’s as feasible using the best available treatment technology.

AL - Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system

must follow.

90th Percentile Level - This is the value obtained after disregarding 10 percent of the samples taken that had the highest levels. (For

example, in a situation in which 10 samples were taken, the 90th percentile level is determined by disregarding the highest result, which

represents 10 percent of the samples.) Note: In situations in which only 5 samples are taken, the average of the two highest levels is

taken to determine the 90th percentile level.

PCi/l - Pico Curies per Liter (a measure of Radioactivity)

Ppb - Parts per billion, which can also be expressed as micrograms per liter (ug/l).

Ppm - Parts per million, which can also be expressed as milligrams per liter (mg/l).

N/A - Not Applicable (does not apply).

Contaminant			MCLG	MCL	Level Found		Typical Source
( units )			MRDLG		Range	Average	of Contaminant
					2006	Result*



Fluoride ( ppm )			4	4	1.2-1.3	1.23	State of Minnesota requires
							all municipal water systems to
							add fluoride to the drinking water
							to promote strong teeth; Erosion
							of natural deposits.








Nitrate (ppm )			10	10	N/A	.3	Runoff from fertilizer use.
as Nitrogen							Leaching from septic tanks
							Sewage
							Erosion of natural deposits.

Chlorine ( ppm )			4	4	.36-.92	.78	Water Additive used to control microbes





Sodium (ppm)					N/A	16	Erosion of natural materials
Sulfate	(ppm)				N/A	30	Erosion of natural materials



* This is the value used to determine compliance with federal standards. It sometimes is the highest value detected and sometimes is an average of all the detected values.


Contaminant			MCLG	AL	90%	Average	Typical Source of
( Units )					Level	Results	Contamination



HAA5	ppb		0	60	10.6-25.7	10.6	Byproduct of Drinking Water
							Disinfection.
TTHM	ppb		0	80.0	37.5-45.3	45.3

Copper		ppm	NA	1.3	1.14	1out of 30 over AL	Corrosion of household Plumbing: erosion of natural deposits

This is the value used to determine compliance with federal standards. It sometimes is the highest value detected and sometimes
is an average of all the detected values. If it is an average, it may contain sampling results from the previous year.

It is interesting to note that M.C.L.’s and Action Levels are set at very stringent levels. To understand the possible health effects

described for many regulated constituents, a person would have to drink 2 liters of water every day at the M.C.L. for a lifetime to have a

one-in-a-million chance of having the described health effect. In addition, Lead and coppe