A sourced reference for portable sanitation rules in Middlesex County — who to contact, what official sources say, and where statewide New Jersey rules apply.
Last reviewed July 31, 2026New Jersey delivers environmental health services through county health departments that enforce New Jersey Department of Environmental Protection (NJDEP) regulations, and the Middlesex County Environmental Health Division is the lead agency for municipalities that contract for those services under the County Environmental Health Act (CEHA).
Source: Middlesex County Office of Health Services – Environmental Health Division ↗Middlesex County Office of Health Services is the state-authorized CEHA agency for the county under the County Environmental Health Act (N.J.S.A. 26:3A2-21 et seq.).
Source: NJDEP County Environmental Health Act (CEHA) Agency Directory ↗Note: Middlesex County publishes limited portable-sanitation guidance online. Contact the department above for requirements specific to your event or site.
These New Jersey and federal requirements apply regardless of county:
Under New Jersey's water pollution control rules, "domestic septage" is defined to include liquid or solid material removed from a portable toilet (as well as septic tanks, cesspools, and similar treatment works that receive only domestic sewage), which places waste pumped from portable toilets under NJDEP's septage and residuals management requirements.
Source: NJDEP - N.J.A.C. 7:14A Subchapter 1 (Definitions), dep.nj.gov ↗Federal OSHA construction sanitation rules, which apply to New Jersey construction sites, require toilets to be provided for employees on a sliding scale: one facility for 20 or fewer workers, one toilet seat and one urinal per 40 workers where there are 20 or more workers, and one toilet seat and one urinal per 50 workers where there are 200 or more workers (29 CFR 1926.51(c)(1), Table D-1).
Source: U.S. OSHA - 29 CFR 1926.51 Sanitation, osha.gov ↗OSHA construction rules provide that job sites not served by a sanitary sewer must be provided with one of the following unless prohibited by local codes: privies (where their use will not contaminate ground or surface water), chemical toilets, recirculating toilets, or combustion toilets (29 CFR 1926.51(c)(3)).
Source: U.S. OSHA - 29 CFR 1926.51 Sanitation, osha.gov ↗OSHA construction rules require that under temporary field conditions, provisions be made to assure that not less than one toilet facility is available (29 CFR 1926.51(c)(2)).
Source: U.S. OSHA - 29 CFR 1926.51 Sanitation, osha.gov ↗Pottys Plus delivers portable toilets across Middlesex County. See local pricing and availability: