Prop 65 Notices

Prop 65 notice 2020-00889: Costco Wholesale Corp.

Key Sciences filed this California Prop 65 60-day notice on April 3, 2020. It names Costco Wholesale Corp. and alleges exposure to Lead and lead compounds from Kirkland Signature Balsamic Vinegar of Modena - Aged (1L).

The violations below are alleged in a 60-day notice. They are not proven. A 60-day notice is not a lawsuit and not a finding of liability.

AG number
2020-00889
Date filed
Noticing party
Plaintiff attorney
Davitt, Lalley, Dey, & McHale
Alleged violators
Chemicals
Source or product
Kirkland Signature Balsamic Vinegar of Modena - Aged (1L)
Official notice
Notice PDF at oag.ca.gov
Official record
Attorney General record for 2020-00889
Last checked
November 11, 2026

What happened after this notice

Outcomes for this notice have not been checked yet. A settlement is not an admission and not a finding that anyone broke the law.

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Other notices naming Costco Wholesale Corp.

  • Costco Wholesale Corp. and 1 more: Cadmium, Lead in Kirkland Signature Seaweed
    Notice 2020-01268, filed 2020-05-22 by Environmental Health Advocates, Inc.
  • Costco Wholesale Corp.: Acrylamide in Kirkland Signature Super Extra-Large Peanuts - Roasted & Salted
    Notice 2020-00369, filed 2020-02-14 by Key Sciences
  • Costco Wholesale Corp.: Mercury and mercury compounds in KIRKLAND SIGNATURE WHOLE FANCY CASHEWS
    Notice 2020-00283, filed 2020-02-07 by Key Sciences

Recent notices filed by Key Sciences

  • Leisure Foods Limited: Acrylamide in Baby Mum-Mum Organic Rice Rusks - Sweet Potato & Carrot (1.76 oz), Baby Mum-Mum Organic Rice Rusks - Blueberry & Goji (1.76 oz)
    Notice 2021-01626, filed 2021-07-07 by Key Sciences
  • Nature's Path Foods USA Inc. and 2 more: Acrylamide in Nature's Path Organic - Organic Waffles - Gluten Free Buckwheat Wildberry (210 g), Nature's Path Organic Homestyle Waffles - Gluten Free (210 g)
    Notice 2021-01598, filed 2021-07-01 by Key Sciences
  • Ella's Kitchen, Inc.: Lead and lead compounds in Ella's Kitchen Fruit + Veggie Puree Pouch - Organic Apples, Sweet Potatoes, Pumpkin + Blueberries (3.5 oz)
    Notice 2021-00858, filed 2021-04-08 by Key Sciences
  • Sprouts Farmers Market, Inc.: Lead and lead compounds in Sprouts Farmer's Market Balsamic Vinegar of Modena - Age (16.9 fl. Oz), Sprouts Farmers Market Organic Balsamic Vinegar of Modena (16.9 fl. Oz)
    Notice 2021-00328, filed 2021-02-11 by Key Sciences
  • Shearer's Foods Burlington, LLC: Acrylamide in Great Value: Made with Wheat and Whole Wheat Flour Buttery Rounds
    Notice 2020-03400, filed 2020-12-11 by Key Sciences