Waddington Water Works 2020 Consumer Confidence Report   6/15/21
We test the drinking water quality for many constituents as required by state and federal regulations.  This report shows the results of our monitoring for the period of January 1 to December 31, 2020 and may include earlier monitoring data.
Type of water source(s) in use:  	groundwater	
Name & general location of source(s):  	Crosby Rd ¼ mile south of Grizzly Bluff	
	
Time and place of regularly scheduled board meetings for ppublic participation:	   as needed	
For more information, contact: 	Jerry Lema	Phone: (707) 786-9555 (work)	
Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water.  Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible.  Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.
Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health.  MCLGs are set by the U.S. Environmental Protection Agency (U.S. EPA).
Public Health Goal (PHG): The level of a contaminant in drinking water below which there is no known or expected risk to health.  PHGs are set by the California Environmental Protection Agency.
Maximum Residual Disinfectant Level (MRDL):  The highest level of a disinfectant allowed in drinking water.  There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health.  MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
Primary Drinking Water Standards (PDWS): MCLs and MRDLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements.
The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells.  As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.
Contaminants that may be present in source water include:
•	Microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
•	Inorganic contaminants, such as salts and metals, that can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
•	Pesticides and herbicides, that may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
•	Organic chemical contaminants, including synthetic and volatile organic chemicals, that are byproducts of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, agricultural application, and septic systems.
•	Radioactive contaminants, that can be naturally-occurring or be the result of oil and gas production and mining activities.
In order to ensure that tap water is safe to drink, the U.S. EPA and the State Board prescribe regulations that limit the amount of certain contaminants in water provided by public water systems.  The U.S. Food and Drug Administration regulations and California law also establish limits for contaminants in bottled water that provide the same protection for public health.
Tables 1, 2, 3, 4, 5, and 6 list all of the drinking water contaminants that were detected during the most recent sampling for the constituent.  The presence of these contaminants in the water does not necessarily indicate that the water poses a health risk.  The State Board allows us to monitor for certain contaminants less than once per year because the concentrations of these contaminants do not change frequently.  Some of the data, though representative of the water quality, are more than one year old.  Any violation of an AL, MCL, MRDL, or TT is asterisked.  Additional information regarding the violation is provided later in this report
Fecal Coliform or E. coli
Microbiological Contaminants
(complete if bacteria detected)	Highest No. of Detections	No. of Months in Violation	 	MCL	MCLG	
Total Coliform Bacteria
(state Total Coliform Rule)	(In a month)	0	1 positive monthly sample	0               Naturally present 
                  in the environment	
Fecal Coliform or E. coli
(state Total Coliform Rule)	(In the year)	0	A routine sample and a repeat sample are total coliform positive, and one of these is also fecal coliform or E. coli positive	0              Human and animal 
                  fecal waste
             	
E. coli
(federal Revised Total Coliform Rule)	(In the year)	0		0               Human and animal 
                   fecal waste	
	
 Lead and Copper
(complete if lead or copper
 detected in the last sample set)	Sample Date	No. of Samples Collected	90th Percentile Level Detected	No. Sites Exceeding AL	AL	PHG	
Lead (ppb)	07/16/19	5	1.1	0	15	0.2	
Copper (ppm)	07/16/19	5	1.155	1	1.3	0.3	

Chemical or Constituent (and reporting units)	Sample Date	Level
Detected	Range of Detections	MCL	
Typical Source of Contaminant	
Sodium (ppm)	12/16/15	Well 1
15 mg/L		None	Salt present in the water and is generally naturally occurring	
Hardness (ppm)	1/15/13	Well 1
 120mg/L
		None	Sum of polyvalent cations present in the water, generally magnesium and calcium, and are usually naturally occurring	

Primary Drinking Water Standards
Chemical or Constituent
(and reporting units)	Sample Date	Level
Detected	Range of Detections	MCL
[MRDL]	
					
nitrate	10/21/20	Well 1
 1.5	mg/L

		10 mg/L	
					
fluoride	10/21/20	Well 1
.27 mg/L		2 mg/L	
					
Gross alpha	12/27/16	Well 1
1.06 pCi/L		15 pCi/L	
Radium 228	12/26/17	Well 1
 1.91	pCi/L		5 pCi/L	
					
Typical Source of Contaminant ----   erosion of natural deposits

Secondary Drinking Water Standards
Chemical or Constituent
(and reporting units)	Sample Date	Level Detected	Range of Detections	SMCL	
color	1/15/13	Well 1
4 units		15 units	
					
Total Disolved Solids	12/16/15	Well 1
170 mg/L		1000 mg/L	
					
specific conductance	1/26/17	Well 1
270 US		1600 US	
					
chloride	1/15/13	Well 1
20 mg/L		500 mg/L	
					
sulfate	1/15/13	Well 1
14 mg/L		500 mg/L	
					
Typical Source of Contaminant  ----   leaching from natural deposits
Specific conductance ---- Substances that form ions when in water; seawater influence