Jacob S. Grouser is a partner in the firm’s Environmental and Toxic Tort Litigation Department and a member of the Executive Management Committee. 

With regards to his toxic torts practice, Jacob has successfully defended various claims alleging exposure to hazardous substances, including: benzene; mold; lead paint; asbestos; silica; talc; pressure treated lumber; carbon monoxide; mixed dust and mixed chemicals. He also supports the firm’s Real Estate, Land Use and Redevelopment teams. 

Jacob has also extensive experience defending and prosecuting environmental pollution claims in both NJ state and federal courts arising from contamination associated with dry-cleaning operations, service stations, industrial facilities, underground-storage tanks and landfills.  Additionally, he frequently counsels clients in connection with transactional and regulatory environmental matters and the pursuit of insurance coverage.

Actively involved in the legal community, Jacob is the Vice Chair of the New Jersey Defense Association’s Environmental Law Committee and was a member of the Justice Stewart G. Pollock Environmental American Inn of Court.  Since 2009, Jacob has served as an accredited professional in Leadership in Energy and Environmental Design (LEED AP) and was instrumental in the formation of Hoagland Longo’s Green Building Practices Group.

Prior to joining the firm, Jacob served as a law clerk to the Honorable Bryan D. Garruto, in the Law Division of the Middlesex County Superior Court.  While in law school, Jacob received a Pro Bono award in connection with his participation in the Bankruptcy Project, VITA Tax Assistance, Security Deposit Project and Holocaust Survivor Project.

Ross v. State Farm Fire & Casualty

In March of 2015, Jacob presented arguments to the Supreme Court of New Jersey in Ross v. State Farm Fire & Casualty, et al.  The Ross Court granted Certification to review whether the Plaintiffs had a viable nuisance claim against their neighbors based upon the failure to mitigate contamination within a reasonable amount of time that they were not otherwise liable for under § 822 of the Second Restatement of Torts.  The Court also granted Certification to review whether the Plaintiffs should be considered third-party beneficiaries to the contracts of insurance entered into by their neighbors and able to proceed directly against the insurers for damages sustained as a result of an alleged delay in completing the remediation.  On August 6, 2015, the Supreme Court of New Jersey affirmed the trial court and Appellate Division’s decisions. 

NJDEP v. Dimant

In May of 2012, Jacob successfully argued NJDEP v. Dimant before the Supreme Court of New Jersey, in which the Court upheld the Appellate Division’s decision that the NJDEP failed to establish liability against the operators of two separate dry cleaning establishments which allegedly caused regional groundwater contamination for which the NJDEP sought investigative and cleanup costs.  On September 26, 2012, the Supreme Court of New Jersey affirmed the Appellate Division’s decision.  The unanimous decision of the Court noted that although the NJDEP need only show a discharge to obtain injunctive relief under the Spill Act, “in order to obtain damages, authorized costs and other similar relief under the Act, there must be shown a reasonable link between the discharge, the putative discharger and the contamination at the specifically damaged site.”

Articles & Publications

Beyond his legal practice, Jacob attends and presents at various seminars and publishes articles and updates on emerging trends and developments.

The article “Have the Tides Changed in Favor of the Defense in Environmental Litigation?”, published in the winter newsletter of the New Jersey Defense Association, discusses the ruling and impact of Ross v. State Farm by the defense bar in light of the Supreme Court’s recent plaintiff-friendly decisions in Morristown Associates v. Grant Oil and Magic Petroleum v. ExxonMobil Corp.

The article “The New Jersey Supreme Court Rules that Spill Act Contribution Claims are Not Subject to a Statute of Limitations” addresses the New Jersey Supreme Court’s decision to reverse the Appellate Division’s decision in Morristown Associates v. Grant Oil, et al.

Jacob was also featured in the New Jersey Defense’s newsletter with a published article titled, “The Appellate Division Clarifies the Law of Nuisance, Trespass and Strict Liability in Connection with Environmental Claims and Denies the Expansion of a Breach of Good Faith and Fair Dealing to Third-Party Insurers”.  The article discusses the Appellate Division's decision to uphold the trial court's decision in Ross v. State Farm Fire & Casualty, et al., which was also published in the 2015 Middlesex County Bar Association’s fall newsletter, The Middlesex Advocate

Other Articles – Authored and Co-Authored:


Reported Decisions

  • Sussex County Plumbing v. NJM, 2011 N.J. Super. Unpub. LEXIS 658 (App. Div. 2011)
  • New Jersey Dept. of Envt’l Protect. v. Dimant, 418 N.J. Super. 530 (App. Div. 2011)
  • North Brunswick Twp. v. Avery Dennison, 2012 N.J. Super. Unpub. LEXIS 2836 (App. Div. 2012)
  • New Jersey Dept. of Envt’l Protect. v. Dimant, 208 N.J. 381 (2012)
  • New Jersey Dept. of Envt’l Protect. v. Dimant, 212 N.J. 153 (2012)
  • Ross v. Lowitz, 2014 N.J. Super. Unpub. LEXIS 568 (App. Div. 2014)
  • Ross v. Lowitz, 218 N.J. 273 (2014)
  • Ross v. Lowitz 222 N.J. 494 (2015)


  • Member, U.S. Green Building Council (New Jersey Chapter)
  • Member, Middlesex County Bar Association, Environmental Law Committee
  • Vice-Chair, New Jersey Defense Association, Environmental Law Committee
  • Member, Defense Research Institute
  • Member, Claims and Litigation Management Alliance (“CLM”)
  • Justice Stewart G. Pollock Environmental American Inns of Court, 2007/2008


  • New Jersey Super Lawyers "Rising Stars" list, 2013 and 2015-2018

A description of the selection process methodologies on which these accolades are based can be found here. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.

Super Lawyers® is published by Thomson Reuters. Best Lawyers in America® is published by Best Lawyers in partnership with U.S. News & World Report. Martindale-Hubbell® is published by Internet Brands, Inc. A description of their selection process can be found in the respective links above. The aforementioned organizations are private peer review organizations, not court-specific, public certification vehicles. No aspect of this advertisement has been submitted to or approved by the Supreme Court of New Jersey.