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Public Health and Environment

Private Well Water Testing Information


Well water sampling services are available for Washington County residents through the Department of Public Health and Environment for a modest fee. Contact us to order a sample kit at 651-430-6655 or to inquire about additional water analyses not listed below.


Water Analysis Fees - All fees are subject to change. The following fees must be paid when you submit your sample to the Department.
 

·    Total Coliform Bacteria & Nitrate-Nitrogen (basic test for drinking quality) - $43
·    Coliform Bacteria Re-Test - $21.50
·    Arsenic - $44*
·    Fluoride - $37
·    Hardness - $54*
·   Iron - $37
·    Iron Bacteria - $55
·    Lead - $44**
·    Sodium - $37*
·    Sulfate - $35


*   The water drawn for these tests MUST NOT go through a water softener.
** This test requires a special sampling container.


Sample Drop-off Information - Note:  Water must be in container provided by the Department in advance.


Stillwater Government Center
14949 62nd St. N.
Fourth Floor (Room 450)
Stillwater
Tuesdays between 8 a.m. and 10:30 a.m.


Washington County North Service Center
19955 Forest Road N.
Forest Lake
Tuesdays between 8 a.m. and 10 a.m.


Washington County South Service Center
1300 Ravine Parkway
Cottage Grove
Tuesdays Between 8 a.m. and 10:30 a.m.



Private Well Water Testing for Perluorochemicals (PFCs)


The Washington County Department of Public Health and Environment (PHE) is offering private well water to be analyzed for perfluorochemicals (PFCs) to residents for the first time in the spring and summer of 2007.

If interested, contact the PHE Department at 651-430-6707 and a PFC Sampling Request Form will be mailed to you. The cost of the sample is $384.

The PHE Department has contracted with the Minnesota Department of Health (MDH) Public Health Laboratory to have private well water samples analyzed for the following seven PFCs:


·
   
Perfluorobutane sulfonate (PFBS)
·    Perfluorobutanoic acid (PFBA)
·    Perfluoropentanoic acid (PFPeA)
·    Perfluorohexane sulfonate (PFHxS)
·    Perfluorohexanoic acid (PFHxA)
·    Perfluorooctane sulfonate (PFOS)
·    Perfluorooctanoic acid (PFOA)


Results and a description of what they mean will be mailed to you from MDH approximately 6-8 weeks from the date of sampling.



Commonly Asked Questions


Q. How often should I have my well tested?

A. Annual testing for total coliform bacteria and nitrate-nitrogen is recommended.


Q. What will testing for total coliform bacteria and nitrate-nitrogen tell me?

A. Testing for total coliform bacteria and nitrate-nitrogen are the basic tests for sanitary quality of drinking water. Coliform bacteria are found naturally in the intestines of warm-blooded animals (including humans), soil, lake and river water. Coliform bacteria are not normally present in groundwater. Although coliform bacteria themselves are harmless, the presence of these bacteria indicate that contamination has occurred, and other disease-producing bacteria may be present. Hence, coliform bacteria are referred to as "indicator" organisms. Nitrate is found in fertilizers and is also formed during the decay of organic matter, such as sewage and animal wastes. The maximum recommended level set by state and federal guidelines for nitrate-nitrogen is 10 mg/L. While not generally harmful to children or adults, water that exceeds 10 mg/L of nitrate-nitrogen is potentially fatal to infants younger than 6 months of age. This limit is established to prevent the occurrence of methemoglobinemia in infants, also known as "blue baby syndrome." Water containing more than 10 mg/L should not be used in preparing formula for infants. Water that is elevated in nitrates should not be boiling when preparing formula, as boiling the water actually increases the nitrate level.


Q. What does it mean to have "hard water?"

A. Hardness is the soap-consuming property of water. Ever since the use of soap became prevalent, people noticed that, depending on the water source, different amounts of soap were needed to produce suds. Water requiring more soap was called hard water because the suds were hard to produce. In contrast, little soap was required to produce suds in rainwater; therefore, it was soft water. Hardness is caused primarily by calcium and magnesium (natural components of rock and soil) that are dissolved in the groundwater. Soap suds cannot be produced in hard water until the dissolved minerals have been combined with the soap. The minerals that combine with soap remain as an insoluble residue - the familiar bathtub ring. In addition, when hard water is heated, it will deposit a hard scale on cookware, plumbing fixtures, and the inside of pipes.

There is no evidence that hardness in water has any effect on human health. Rather, its ability to consume soap and leave scale on fixtures and appliances are economic concerns. Water softening is the most common form of water treatment for hardness.



Q. My water smells and tastes funny; is it ok to drink?

A. If your water smells like "rotten eggs," tastes funny, has a reddish discoloration, or you notice a reddish slime growth on filters or in the toilet tank, you may have iron bacteria. Iron bacteria do not cause disease and do not render the water undrinkable. However, they are a nuisance aesthetically, and if they become too numerous, may cause the well screen, pump inlet or aquifer pores to become plugged. Iron bacteria are difficult to totally eliminate, but can be controlled by routine well disinfection.

Contact Washington County Department of Public Health & Environment , at 651-430-6655 for step-by-step disinfection instructions, or contact a licensed well contractor.



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