Muller Mutual Water Company Water Quality Report for 2021

      We purchase all our water from TUD; which is now providing their 2021 water quality report ONLY online at:
            http://www.tudwater.com/wp-content/uploads/2020/06/TUD_WaterQualityReport_2021.pdf
      
      Alternatively, go to TUD's home page (www.tudwater.com), click About > Documents, Reports and Videos; scroll down to Annual Water Quality Report - 2021.
      The data relevant to us is under the "ponderosa" system.
      For those who cannot or do not wish to view the report online, call TUD at 532-5536 and request a printed copy.

      In addition, we have a commercial laboratory do the following tests:
      
a) Every month a sample is taken from the farthest point in our system and tested for total coliform bacteria. These tests have been uniformly negative. Free chlorine remaining in the water is also tested. The presence of free chlorine is important to prevent bacterial contamination.
b) In 2021 4 quarterly tests were made for "disinfection by-products" at the same point. The running annual average was within acceptable limits, see below.
c) In 2021 5 homes provided samples of their interior tap water for a lead and copper test. The highest lead level was 0.003 ppm (parts per million); the maximum acceptable is 0.015 ppm.; the highest copper level was 0.0828 ppm (parts per million); the maximum acceptable is 1.3 ppm.

Explanation of tests done by MMWC:
Total coliform bacteria: this would be a sign of contamination by bacteria naturally present in the environment, possibly including fecal matter. All tests met state standards.
Disinfection byproducts are a result of the chlorine disinfectant reacting with and eliminating organic contaminants, and are considered harmful above certain levels. Two types were tested for: trihalomethanes and haloacetic acids. All tests showed a result below the state's maximum contamination level (MCL).
The lead and copper test measures these metals in the user's home tap water. These metals can leach out of older house plumbing especially if the water supply is corrosive, e.g. acidic. Lead is especially harmful, and was not detected.
For more information call John Jacobson at (209) 532-7398.

 Tabulated Results:

Detection of Contaminants with Primary Drinking Water Standards	
Chemical or Constituent (and reporting units)	Sample Date	Average level detected	Range of Detection	MCL* [MRDL]	PHG* (MCLG) [MRDLG]	Typical Source of Contamination	
Free Chlorine Residual (ppm) as CL2	2021	0.22	0.06 – 0.32	4	4	Disinfection additive for water treatment	
Total Trihalomethanes (ppb)	2021	47.2	32.3- 67.7	80	N/A	By-product of drinking water disinfection	
Haloacetic Acid (ppb)	2021	30.0	21.7- 46.0	60	N/A	By-product of drinking water disinfection	

 *MCL = Maximum Contaminant Level
           PHG = Public Health Goal