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Emerging Constituents 1

Emerging Constituents

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Emerging Constituents. Regulatory Initiatives. CDPH: Draft Groundwater Recharge/Reuse Regulation (applied in NPDES permits & WDRs) SWRCB: Blue Ribbon Panel on CECs EPA: Unregulated Contaminants Monitoring Rule. Emerging Constituents Workgroup. Water Wholesalers Water Retailers - PowerPoint PPT Presentation

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Page 1: Emerging Constituents

Emerging Constituents

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Page 2: Emerging Constituents

Regulatory Initiatives

CDPH: Draft Groundwater Recharge/Reuse Regulation

(applied in NPDES permits & WDRs)

SWRCB: Blue Ribbon Panel on CECs

EPA: Unregulated Contaminants Monitoring Rule

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Page 3: Emerging Constituents

Emerging Constituents Workgroup

Water Wholesalers Water Retailers Wastewater Treatment Operators Regional Board Staff CDPH Staff USGS Staff Analytical Lab Staff NWRI Staff Environmental NGOs

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Page 4: Emerging Constituents

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SACRAMENTO

LOSANGELES

SANBERNARDINO

ColoradoRiver

ColoradoRiver

Water (CRW)

SANDIEGO

State Project Water (SPW)

SANFRANCISCO

Santa Ana River

(SAR)

OCWD/MWDSC/NWRI

Study to Characterize

ECs in the

Santa Ana Watershed

Page 5: Emerging Constituents

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EC Characterization for Municipal Effluents

Compound Use Minimum Median Maximum

Caffeine Stimulant <5 ng/L 14 ng/L 1883 ng/L

Carbamazepine Anti-convulsant 123 ng/L 208 ng/L 331 ng/L

Gemfibrozil Anti-cholesterol <5 ng/L 22 ng/L 1178 ng/L

Primidone Anti-convulsant 84 ng/L 146 ng/L 171 ng/L

Sulfamethoxazole Antibiotic 4 ng/L 417 ng/L 1593 ng/L

Page 6: Emerging Constituents

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EC Characterization for Local Surface Waters

Compound Use Minimum Median Maximum

Caffeine Stimulant 9 ng/L 47 ng/L 1620 ng/L

Carbamazepine Anti-convulsant 49 ng/L 135 ng/L 267 ng/L

Gemfibrozil Anti-cholesterol <5 ng/L 48 ng/L 590 ng/L

Primidone Anti-convulsant 41 ng/L 90 ng/L 146 ng/L

Sulfamethoxazole Antibiotic 4 ng/L 160 ng/L 721 ng/L

Page 7: Emerging Constituents

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EC Characterization for State Project Water

Compound Use Minimum Median Maximum

Caffeine Stimulant <5 ng/L 7 ng/L 37 ng/L

Carbamazepine Anti-convulsant <1 ng/L 2 ng/L 4 ng/L

Gemfibrozil Anti-cholesterol <5 ng/L <5 ng/L 5 ng/L

Primidone Anti-convulsant < 2 ng/L 2 ng/L 10 ng/L

Sulfamethoxazole Antibiotic 5 ng/L 10 ng/L 11 ng/L

Page 8: Emerging Constituents

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EC Characterization for Colorado River Water

Compound Use Minimum Median Maximum

Caffeine Stimulant <5 ng/L <5 ng/L <5 ng/L

Carbamazepine Anti-convulsant <1 ng/L <1 ng/L 2 ng/L

Gemfibrozil Anti-cholesterol <5 ng/L <5 ng/L <5 ng/L

Primidone Anti-convulsant <2 ng/L 2 ng/L 3 ng/L

Sulfamethoxazole Antibiotic <1 ng/L <1 ng/L 1 ng/L

Page 9: Emerging Constituents

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Pharmaceuticals

Explanation

none detected

1 detected

2 detected

3 detected

Page 10: Emerging Constituents

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EC Characterization in Ground Waters

Compound Use # Detections Detection % LRL*

Acetaminophen Analgesic 3 of 89 wells 3% 25 ng/L

Caffeine Stimulant 3 of 89 wells 3% 15 ng/L

Carbamazepine Anti-convulsant 5 of 89 wells 6% 30 ng/L

Sulfamethoxazole Antibiotic 0 of 89 wells 0% 10 ng/L

Page 11: Emerging Constituents

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Page 12: Emerging Constituents

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Toxicological Relevance

Pharmaceutical compounds not detected

in 91% of wells tested (n = 89).

COMPOUND Number of Detections

Median Conc. (ng/L)

Common Dose (ng)

Carbamazepine 5 43 200,000,000

Acetaminophen 3 24 500,000,000

Caffeine 3 13 100,000,000

1,7-Dimethylxanthine 2 15 --

~0.5 million L

>20 million L

~7.5 million L

Page 13: Emerging Constituents
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Cholecalciferol

di-Alpha Tocopheryl Acetate

Phytonadione

Pyridoxine Hydrochloride

Cyanocobalamin

Public Information Programs

Page 15: Emerging Constituents

Cholecalciferol Vitamin D

di-Alpha Tocopheryl Acetate Vitamin E

Phytonadione Vitamin K

Pyridoxine Hydrochloride Vitamin B-6

Cyanocobalamin Vitamin B-12

Page 16: Emerging Constituents

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Page 17: Emerging Constituents

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Page 19: Emerging Constituents

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ECs to be Analyzed

Chemical Category Common Use

Acetaminophen (aka “Tylenol”) Pharmaceutical Over-the Counter Analgesic

Bisphenol-A (BPA) Industrial Plastic Manufacturing

Caffeine (coffee, tea, soft drinks) Food Additive Non-Prescription Stimulant

Carbamazepine Pharmaceutical Prescription Anti-Convulsant

DEET (aka “Off”) Pesticide Household Insect Repellent

Diuron Herbicide Weed Control

Ethynylestradiol/Ethinylestradiol Hormone Prescription

Gemfibrozil Pharmaceutical Prescription Anti-Cholesterol

Ibuprofen (aka “Advil”) Pharmaceutical Over-the-Counter Analgesic

Sulfamethoxazole Pharmaceutical Prescription Antibiotic

TCEP Industrial Flame Retardant

Page 20: Emerging Constituents

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Sampling Locations & Frequency

Sampling Site SamplingFrequency

SampleType

ResponsibleAgency[1]

Final Effluent from AllWastewater Treatment Plants[2]

Annually 24-hourComposite

PermittedOperator

State Project Water @ Devil Canyon Annually RepresentativeGrab

MWDSC

Colorado River @ San Jacinto West Portal

Annually RepresentativeGrab

MWDSC

Santa Ana River near MWD Crossing 2x/year RepresentativeGrab

OCWD

Santa Ana River near Prado Dam 2x/year RepresentativeGrab

OCWD

Page 21: Emerging Constituents

Emerging Constituents

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