- Recessed ports to accommodate various plumbing configurations
- Accepts Fernco® rubber couplers and clamps
- Heavy-duty thick wall construction
- Provides versatile storage under office trailers on job sites
Mr. John's holding tanks are an excellent solution when running water is available without a sewer hookup. Our holding tanks and pumping service can afford benefits such as flushing toilets and fresh water hand washing. Mr. John will install holding tanks to fit the needs of our customers and their specific job conditions. Tank capacity ranges from 250 to 1,000 gallons, and Mr. John's tank pumping can provide service at any level.