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Consumer Confidence ReportContaminants Highest No. of Detections MCLG Total Coliform Bacteria 0 0 Fecal Coliform Bacteria of E. Coli 0 0 Contaminants (CCR UNITS)No. of Samples --No. of Sites Exceeding RAL RAL PHG Lead (ppb)22 0 15 0.2 Copper (ppm)22 0 1.3 0.3 Contaminants (CCR UNITS)No. of Samples --No. of Sites Exceeding RAL RAL PHG Lead (ppb)10 0 15 0.2 PRIMARY DRINKING WATER STANDARDS WELL #5 WELL #23 PRIMARY CONTAMINANT MCL MCLG PHG RANGE RANGE Arsenic (ppb)10 0.004 4 3 Chromium (total) (ppb)50 100 ug/l 10 10 Erosion of natural deposits Nitrate (as N) (ppm)10 10 0.4 1.6 Nitrite (as N) (ppm)1 1 0.4 0 Fluoride (ppm)2 1 0.10 0.2 MTBE (ug/l)13 13 3.00 0 Gross Alpha Particle Activity (pCi/I)15 NA 6.63 10.1 Uranium (pCi/I)20 0.43 2.15 4.38 WELL #5 WELL #23 SECONDARY CONTAMINANT RANGE RANGE Chloride (ppm)125 45 Iron (ppb)110 100 Manganese (ppb)30 20 Sulfate (as SO4) (ppm)170 167 Total Dissolved Solids (ppm)900 650 Zinc (ppb)50 50 WELL #5 WELL #23 CONTAMINANT RANGE RANGE Total Alkalinity as CaCO3 (ppm)430 390 Calcium (ppm)125 103 Sodium (ppm)56 50 Magnesium (ppm)55 47 WELL #5 WELL #23 Aggressive Index 12.3 12.7 Specific Conductance (micromhos)1320 1090 Total Hardness (ppm) (as CaCO3)538 450 pH (units)7.3(g)7.8 Turbidity (NTU)*****0.9(g)0.5 MCL MRDL RANGE 80 NA 26-65 60 NA 20-39 4.0 4.0 1.1-2.18 UNREGULATED CHEMICALS Avg. Level Detected MCL Boron (ppm)0.2 NS Vanadium (ppb)3 NS Table #1 DISTRIBUTION SYSTEM WATER SAMPLING RESULTS SHOWING DETECTION OF COLIFORM BACTERIA Table #2 - 2020 HOME SAMPLING RESULTS SHOWING THE DETECTION OF LEAD AND COPPER Table #4 - GROUND WATER SAMPLING TEST RESULTS FOR DETECTION OF CONTAMINANTS No. of Months in Violation 0 0 90th Percentile Level Detected ND 0.238 Internal corrosion of household plumbing system; discharges from industrial manufacturers; erosion of natural deposits Internal corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives Typical Source of Contaminant MCL More than 1 positive monthly sample A routine sample and a repeat sample are total Coliform positive, and one is also fecal Coliform or E. Coli Typical Source of Contaminant Erosion of natural deposits Erosion of natural deposits Naturally present in the environment Human and animal fecal waste POTENTIAL CONTAMINANTION SOURCE Erosion of natural deposits Erosion of natural deposits; water additive that promotes strong teeth; discharge from fertilizer and aluminum factories Runoff and leaching from fertilizer use; leaching from septic tanks and sewage; erosion of natural deposits Table #3 - 2017 LEAD SAMPLING RESULTS FOR SCHOOLS K-12 (2 SCHOOLS TESTED) 90th Percentile Level Detected Typical Source of Contaminant 3.5 Internal corrosion of household plumbing system; discharges from industrial manufacturers; erosion of natural deposits Runoff and leaching from fertilizer use; leaching from septic tanks and sewage; erosion of natural deposits gasoline additive methyl tertiary butyl ether Runoff; leaching from natural deposits; seawater Natural or industrial Natural or industrial MCL 500 300 50 POTENTIAL CONTAMINANTION SOURCE By-product of drinking water chlorination By-product of drinking water chlorination Disinfectant DISTRIBUTION SYSTEM ***** Turbidity is a measure of the cloudiness of the water. The City monitors this because it is a good indicator of water quality. High turbidity can hinder the effectiveness of disinfectants. DISINFECTANT RESIDUAL AND BY-PRODUCTS Total Trihalomethanes (ppb) Total Haloacetic Acids (ppb) 100 50 Naturally-occurring; element found in soil and water in the form of boric acid and sodium tetraborate Naturally-occurring; has been found in association with hazardous waste sites Typical Source of ContaminantsRALRange of Detections Low- High Table #5 - WELL SAMPLING RESULTS SHOWING DETECTION OF UNREGULATED CHEMICALS ND-.21 NA NA NA NA N/A Chlorine Residual Runoff; leaching from natural deposits; seawater Runoff; leaching from natural deposits; seawater Runoff; leaching from natural deposits; seawater Runoff; leaching from natural deposits; seawater NA Substances that form ions when in water; seawater influence Generally found in ground and surface water NA Soil runoff; leaching from natural deposits ADDITIONAL ANALYSIS MCL=5 2021 WATER QUALITY DATA FOR PISMO BEACH NA MCL=1600 NA NA Runoff; leaching from natural from natural deposits; industrial Soil runoff; leaching from natural deposits Improper waste disposal POTENTIAL CONTAMINANTION SOURCE WITHOUT A DRINKING WATER STANDARDS 500 1000 5000 MCL SECONDARY DRINKING WATER STANDARDS (g) Laboratory sample (h) Well #23 not in service for 2019 (I) not sampled in reporting year Maximum Contaminant Level (MCL) Regulatory Action Level (RAL) Maximum Contaminant Level Goal (MCLG and Public Health Goal (PHG) Maximum Residual Disinfectant Level (MRDL) Maximum Residual Disinfectant Level Goal (MRDLG) Primary Drinking Water Standards (PDWS) Primary Drinking Water Standards (SDWS) Treatment Technique (TT) Regulatory Notification Level (NL) Running Annual Average (RAA) Not Collected (NC) Not Reported (NR) Not Standard (NS) Not Detected (ND) Not Analyzed (NA) WAIVED pCi/L ppm ppb uS/cm CU NS CFU/ml NTU TON USEPA CDC LI LopezWTP CCWA PPWTP TOC The concentration of a contaminant that, if exceeded, triggers treatment of other requirement which a water system must follow A required process intended to reduce the level of a contaminant in drinking water State and Lopez Water Footnotes: LANGELIER INDEX; NONCORROSIVE = ANY POSITIVE VALUE, CORROSIVE = ANY NEGATIVE VALUE NO STANDARD COLONY FORMING UNITS PER MILLILITER NEPHELOMETRIC TURBIDITY UNIT MCLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible MCLs for contaminants to protect the taste, odor, or appearance of the drinking water. Contaminants with SDWSs do not affect health at the MCL levels The level of a disinfectant added for water treatment below which there is no known or expected risk to health. MRDLGs are set by the U.S. Environmental Protection Agency A sample was not collected for this contaminant Contaminant was not reported Contaminant is not detectable at testing limit Contaminant for which there is no established MCL Contaminant was not analyzed FOR THE WEB BROWSERS: www.pismobeach.org www.thinkh2onow.com The highest level of contaminant that is allowed in drinking water The level of contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the United States Environmental Protection Agency and PHGs are set by the California Environmental Protection Agency The level of a disinfectant added for water treatment that may not be exceeded at the consumer's faucet • County Board of Supervisors http://slocounty.ca.gov/bos.html • The Office of Ground Water and Drinking at EPA • www.water.epa.gov/drink/index.cfm • American Water Works Association http://www.awwa.org The concentration of a contaminat that, if exceeded, triggers treatement or other requirements that a water system must follow In order to ensure that tap water is safe to drink, EPA, and the California State Water Reserouces Control Board, prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water which must provide the same protection for public health. Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence does not necessarily indicate that water poses a health risk. On September 4, 2007, the CDPH granted the TOC waiver to the Lopez WTP. The facility upgraded to Membrane Treatment PICOCURIES PER LITER (A MEASURE OF RADIOACTIVITY) PARTS PER MILLION, OR MILLIGRAMS PER LITER (MG/L) PARTS PER BILLION, OR MICROGRAMS PER LITER (G/L) MICROMHOS PER CENTIMETER (UNIT OF SPECIFIC CONDUCTANCE OF WATER) THRESHOLD ODOR NUMBER UNITED STATES ENVIORNMENTAL PROTECTION AGENCY CENTER FOR DISEASE CONTROL HOTLINE (1-800-426-4791) More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency's State Drinking Water Hotline (1-800-416-4791). Some people may be more vulnerable to contaminants in drinking water then the general population. Immune-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplant, people with HIV/AIDS or other immune system deficiencies, some elderly, and infants can be particularly at risk of infections. These people should seek advice about drinking water from their health care providers. If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The City of Pismo beach is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead drinking water testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov//lead. (a) Distribution system samples. (b) Aluminum has a Secondary MCL of 0.2 ppm (e) The MRDL for chlorine is based on a running annual average of distribution system samples. (f) Increases in odor have been associated with algae blooms. During times of increased algae blooms an odor in the algae is controlled with algaecides and the odor is reduced to acceptable levels by treating water with powder activated carbon. (c) Compliance based on the running annual average of samples computed quarterly. (d) TOCs are taken at the treatment plant's combined filter effluent. LOPEZ WATER TREATMENT PLANT CENTRAL COAST WATER AUTHORITY POLANIO PASS WATER TREATMENT PLANT TOTAL ORGANIC CARBON USEPA/CDC Provides guidelines on appropriate means to the risk of infection by Cryptosporidium and other microbial contaminants, for information call - Safe Drinking Water Hotline (1-800-426- 4791). This hotline operates from 9 a.m. to 5 p.m. EST, Monday through Friday. For more information contact: COLOR UNITS An arithmetic average of all sample is computed quarterly. The quarterly average is then averaged against the previous three quarters worth of data to provide an annual running average. The highest running average over a twelve month period used for compliance You can provide input regarding water quality decisions in your area. •The drinking water source assessment and protection program was completed in September 2002, both are on file at the Water Division. •The public can address concerns to the Public Works Water Division. Contact Brandon Shea at (805) 773-7054 •The City Council meets the first and third Tuesday of each month at City Hall. •Este informe contiene informacion muy importante sobre la calidad del agua que usted consume. Por favor de traducirlo, o hable con alguien que lo entiende bien.