Restatement (Second) of Torts (1979)
Division 10. Invasions Of Interests In Land Other Than By Trespass
Chapter 40. Nuisance
Topic 2. Private Nuisance: Elements Of Liability (Selected Provisions)
§ 822. General Rule
One is subject to liability for a private nuisance if, but only if, his conduct is a legal cause of an invasion of another's interest in the private use and enjoyment of land, and the invasion is either
(a) intentional and unreasonable, or
(b) unintentional and otherwise actionable under the rules controlling liability for negligent or reckless conduct, or for abnormally dangerous conditions or activities.
§ 824. Type Of Conduct Essential To Liability
The conduct necessary to make the actor liable for either a public or a private nuisance may consist of
(a) an act; or
(b) a failure to act under circumstances in which the actor is under a duty to take positive action to prevent or abate the interference with the public interest or the invasion of the private interest.
§ 825. Intentional Invasion--What Constitutes
An invasion of another's interest in the use and enjoyment of land or an interference with the public right, is intentional if the actor
(a) acts for the purpose of causing it, or
(b) knows that it is resulting or is substantially certain to result from his conduct.
§ 826. Unreasonableness Of Intentional Invasion
An intentional invasion of another's interest in the use and enjoyment of land is unreasonable if
(a) the gravity of the harm outweighs the utility of the actor's conduct, or
(b) the harm caused by the conduct is serious and the financial burden of compensating for this and similar harm to others would not make the continuation of the conduct not feasible.
§ 827. Gravity Of Harm--Factors Involved
In determining the gravity of the harm from an intentional invasion of another's interest in the use and enjoyment of land, the following factors are important:
(a) The extent of the harm involved;
(b) the character of the harm involved;
(c) the social value that the law attaches to the type of use or enjoyment invaded;
(d) the suitability of the particular use or enjoyment invaded to the character of the locality; and
(e) the burden on the person harmed of avoiding the harm.
§ 828. Utility Of Conduct--Factors Involved
In determining the utility of conduct that causes an intentional invasion of another's interest in the use and enjoyment of land, the following factors are important:
(a) the social value that the law attaches to the primary purpose of the conduct;
(b) the suitability of the conduct to the character of the locality; and
(c) the impracticability of preventing or avoiding the invasion.