Water Test Results

Contaminant

Contaminant Microbiological      Date        Results       MCL       MCLG Possible Sources of Contamination

COLIFORM (TCR) (1)                                        2021                0 pos        1 pos/mo or 5%        0 pos   Naturally present in the environment.

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Inorganics               

BARIUM                                                      5/3/2021           0.0024 ppm        2 ppm              2 ppm      Discharge of drilling wastes. Discharge from                                                                                                                                                                             metal refineries. Erosion of natural deposits.

CHROMIUM                                               5/3/2021             0.56 ppb         100 ppb          100 ppb     Discharge from steel and pulp mills.  Erosion of                                                                                                                                                                        natural deposits.

NITRATE (5)                                                5/3/2021            0.21 ppm          10 ppm             10 ppm    Runoff from fertilizer use. Leaching from septic                                                                                                                                                                        tanks, sewage. Erosion of natural deposits

Lead/Copper

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COPPER 90TH% VALUE (4)                     1/1/2019 - 12/31/2021   0.15 ppm      AL = 1.3 ppm        1.3 ppm    Corrosion of household plumbing systems.

LEAD 90TH% VALUE (4)                          1/1/2019 - 12/31/2021   4.2 ppb         AL = 15 ppb           0 ppb       Corrosion of household plumbing systems.

 

Disinfectants and Disinfection By Products

TOTAL                                                                7/29/2019             5.4 ppb              80 ppb                0 ppb By-product of drinking water chlorination.

TRIHALOMETHANE

(TTHM) (9)

Chlorine Residual 

CHLORINE RESIDUAL  Range ( 0.07 - 0.26 ppm)  MRDL=4 ppm   MRDLG= By-product of drinking water chlorination. 4 ppm

Notes:

1. Total Coliform Bacteria:  Reported as the highest monthly number of positive samples, for water systems that take less than 40 samples per month.

2. E. Coli: E. coli are bacteria whose presence indicates that the water may be contaminated with human or animal wastes. Human pathogens in these wastes cancause short-term effects, such as diarrhea, cramps, nausea, headaches, or other symptoms. They may pose a greater health risk for infants, young children, the elderly, and people with severely-compromised immune systems.

3. Fluoride:  For those systems that fluoridate, fluoride levels must be maintained between 0.5 to 1.2 ppm. The optimum level is 0.7 ppm.

4. Lead/Copper:  Action levels (AL) are measured at consumer’s tap.  90% of the tests must be equal to or below the action level.

5. Nitrate:  Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue baby syndrome. Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant you should ask advice from your health provider.

6. Arsenic: While your drinking water may meet EPA's standard for Arsenic, if it contains between 5 to 10 ppb you should know that the standard balances the current understanding of arsenic's possible health effects against the costs of removing it from drinking water. EPA continues to research the health effects of low levels of arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems. Quarterly compliance is based on running annual average.

7. Gross Alpha:  Action level over 5 pCi/L requires testing for Radium 226 and 228. Action level over 15 pCi/L requires testing for Uranium. Compliance is basedon Gross Alpha results minus Uranium results = Net Gross Alpha.

8. Radon:  The State of Maine adopted a Maximum Exposure Guideline (MEG) for Radon in drinking water at 4000 pCi/L, effective 1/1/07. If Radon exceeds the MEG in water, treatment is recommended. It is also advisable to test indoor air for Radon.

9. TTHM/HAA5:  Total Trihalomethanes and Haloacetic Acids (TTHM and HAA5) are formed as a by-product of drinking water chlorination. This chemical reaction occurs when chlorine combines with naturally occurring organic matter in water. Compliance is based on running annual average.

All other regulated drinking water contaminants were below detection levels.

Secondary Contaminants 

SULFATE                3 ppm        5/3/2021

SODIUM              2.7 ppm       5/3/2021

MAGNESIUM      2.5 ppm      5/3/2021

IRON                0.086 ppm      5/3/2021

ZINC                 0.028 ppm      5/3/2021

CHLORIDE          2 ppm          5/3/2021