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UNITS PHG MCL DLR CATEGORY CANCER RISK CANCER BEST AGGREGATE COST PERPARAMETER OF OR OR AVERAGE RANGE OF AT PHG RISK AVAILABLE COST SERVICE CONNECTIONMEASUREMENT (MCLG)* (CCRDL) RISK OR MCLG AT MCL TECHNOLOGIES PER YEAR PER YEARINORGANIC CHEMICALSArsenic μg/l 0.004 10 2 ND ND - 2.5 C 1 x 10-62.5 x 10-3AA,C/F,E,IE,LS,O/F,RO$2,610,000 (a)$57 (a)Bromateμg/l 0.1 10 1 ND ND - 7.6 C 1 x 10-61 x 10-4C/F, GAC, RO $2,020,000 - $17,300,000 (b)$44 - 379 (b)Hexavalent Chromiumμg/l 0.02 10 0.1 0.7 0.29 - 2.3 C 1 x 10-65 x 10-4IE, R/C/F, RO $17,800,000 - $111,000,000 (c)$390 - $2,440 (c)Perchlorateμg/l 1 6 1 ND ND - 3.3 E NA NA IE, BFBR $3,370,000 - $7,400,000 (d) $74 - $162 (d)ORGANIC CHEMICALSPerfluorooctanesulfonic Acid (PFOS) ng/l 1 4 ** (4) ND ND - 22 *** C 1 x 10-6(e)GAC, IE, RO $4,450,000 - $60,800,000 (f)$97 - $1,330 (f)Perfluorooctanoic Acid (PFOA) ng/l 0.007 4 ** (4) ND ND - 15 *** C 1 x 10-6(e)GAC, IE, RO -- --RADIOLOGICALGross Alpha Particle Activity pCi/l (0) 15 3 ND ND - 5 C 0 1 x 10-3RO $10,500,000 - $89,800,000 (g)$230 - $1,970 (g)Gross Beta Particle Activity pCi/l (0) 50 4 ND ND - 9 C 0 2 x 10-3IE, RO -- --Radium, Combined (h) pCi/l (0)51 (h)ND ND - 1C1 x 10-63 x 10-4IE, LS, RO -- --Uranium pCi/l 0.43 20 1 2 ND - 5.8 C1 x 10-65 x 10-5IE, RO, LS,C/F -- --ALL CONTAMINANTS-- -- -- -- -- -- -- -- -- IE and RO $14,100,000 - $99,500,000 (i) $309 - $2,180 (i)* MCLGs are shown in parentheses. MCLGs are provided only when no applicable PHG exists.** Federal MCL*** Range of detections reported before the effective Federal MCL compliance date of April 26, 2029.TREATMENT TECHNOLOGIESAA = Activated AluminumRISK CATEGORIESBFBR = Biological fluidized Bed ReactorC (Carcinogen) = A substance that is capable of producing cancer.C/F = Coagulation/FiltrationE (Endocrine Toxicity and Developmental Toxicity) = A substance that can affect the thyroid or cause neurodevelopmental deficits. E = ElectrodialysisGAC = Granular Activated CarbonNOTESIE = Ion ExchangeCCRDL = Consumer Confidence Report Detection LevelLS = Lime SofteningDLR = Detection Limit for Purposes of ReportingO/F = Oxidation/FiltrationMCL = Maximum Contaminant LevelR/C/F = Reduction/Coagulation/FiltrationMCLG = Maximum Contaminant Level Goal RO = Reverse Osmosisμg/l = micrograms per liter or parts per billionNA = Not ApplicableND = Not Detectedng/l = nanograms per liter or parts per trillionpCi/l = picoCuries per literPHG = Public Health Goal (a) Estimated cost to remove arsenic using IE.(b) Estimated cost to remove bromate using RO.(c) Estimated cost to remove hexavalent chromium using R/C/F. (d) Estimated cost to remove perchlorate using IE.(e) Not applicable. Cancer risk cannot be calculated.(f) Estimated cost to remove PFOS and PFOA using IE.(g) Estimated cost to remove gross alpha particle activity using RO, which also removes combined radium, gross beta particle activity, and uranium. (h) As the sum of radium-226 and radium-228. DLRs for radium-226 and radium-228 is 1 pCi/L and 1 pCi/L, respectively.(i) Assuming treating the entire production by IE and RO, which can remove all contaminants listed in the above table to below the detectable levels. 2025 PUBLIC HEALTH GOALS REPORTCITY OF SANTA ANACONCENTRATIONJ:\2605\2605-004 - Santa Ana 2025 PHG\Santa Ana_phgtable_2025_Final.xlsx City Council 23 – 1211/4/2025
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