Current IAPMO American National Standards



This Standard specifies a test method to determine roof drain systems performance by measuring flow rates based on the water head and the piping configurations specified in this Standard, for drains in sizes NPS‐2 to NPS‐6.

This Standard covers plastic plumbing fixtures and specifies requirements for materials, construction, performance, testing, and markings.

This Standard covers terrazzo, concrete, composite stone, and natural stone plumbing fixtures and specifies requirements for materials, construction, performance, testing, and markings of these fixtures.

This Standard covers lavatories and sinks made of glass and specifies test methods, performance requirements, and marking requirements.

This Standard covers aluminum and copper plumbing fixtures and specifies requirements for materials, construction, performance, testing, and markings of these fixtures.

This Standard covers vacuum waste-collection systems intended to extract and transport water, condensate from refrigerators, sanitary waste, greywater, or grease and specifies requirements for materials, construction, performance testing, and markings.

This Standard specifies test methods and markings for flexible water connectors with excess flow shut-off devices.

This Standard specifies requirements for the design and installation of pre‐engineered solar water heating systems intended to be installed as stand‐alone systems or in conjunction with auxiliary water heaters, including component selection and sizing criteria.

This Standard specifies the procedures used to determine the energy production rating of solar heating collectors.

This standard covers plastic toilet seats (including toilet seat covers) and specifies requirements for materials, construction, performance testing, and markings.

This Standard covers prefabricated plastic spa shells and specifies requirements for materials, construction, performance testing, and markings.

This Standard covers scale reduction devices intended for residential and similar water-heating applications and specifies general, material, structural integrity, and testing requirements.

This Standard covers prefabricated septic tanks made of concrete, fiber‐reinforced polyester (FRP), thermoplastic, or steel, intended for use in residential or commercial sewage disposal systems, and specifies design, material, performance testing, and marking requirements.

This Standard covers prefabricated gravity grease interceptors made of concrete, fiber‐reinforced polyester (FRP), thermoplastic, or steel and specifies requirements for design, materials, performance, testing, and markings.

This Standard covers rainwater harvesting tanks and specifies requirements for design, materials, manufacture, performance, testing, and markings.

This Standard covers flexible PVC hoses and tubing for use on pools, hot tubs, spas, and jetted bathtubs and specifies requirements for materials, physical characteristics, performance tests, and markings.

This Standard covers pre-pressurized water expansion tanks intended for use in potable and nonpotable water systems and specifies requirements for physical characteristics, performance testing, and markings.

This Standard covers ball valves in sizes NPS‐1/8 to NPS‐4, with minimum rated working pressures of 860 kPa (125 psi) at 23 ºC (73ºF), intended for use in water supply and distribution systems and specifies requirements for materials, physical characteristics, performance, testing, and markings.

This document specifies general safety and performance requirements for design and testing as well as sustainability considerations for non-sewered sanitation systems (NSSS). A NSSS, for the purposes of this document, is a prefabricated integrated treatment unit, comprising frontend (toilet facility) and backend (treatment facility) components that a) collects, conveys, and fully treats the specific input within the system, to allow for safe reuse or disposal of the generated solid, liquid, and gaseous output, and b) is not connected to a networked sewer or networked drainage systems. This document is applicable to sanitation systems that are either manufactured as one package, or manufactured as a set of prefabricated elements designed to be assembled in one location without further fabrication or modification that influences the system function. The plane or surface (e.g. flooring, concrete pad) upon which a fully assembled NSSS is situated is beyond the scope of this document. This document is not applicable to sanitation systems constructed in situ. This document also covers NSSS backend components that are designed to be integrated with one or more specified frontends. Although this document is primarily applicable to the development of sanitation systems that are not connected to water and electricity networks, it can also be applied to systems that can utilize water mains and/or electricity. This document defines the basic treatable input as primarily human excreta and gives options for extending the range of input substances. Requirements for the quality of the outputs from the sanitation system are given for solid and liquid discharges as well as odour, air, and noise emissions. It contains criteria for the safety, functionality, usability, reliability, and maintainability of the system, as well as its compatibility with environmental protection goals. This document does not encompass the following aspects: — guidelines for selection, installation, operation and maintenance, and management of sanitation systems; — transportation of treated output outside of the sanitation system (e.g. manual transport, transportation by truck or trunk pipes) for further processing, reuse, or disposal; — treatment processes taking place at another location separate from that of the frontend and backend components; — reuse and disposal of sanitation system output.


IAPMO Standards are subject to periodic maintenance in accordance with the ANSI Essential Requirements: Due process requirements for American National Standards and the IAPMO PP-1 Policies and Procedures for Consensus Development of American National Standards. Suggestions for their improvement will be referred to the relevant IAPMO Standards Committee. To submit a proposal for change to a Standard, you may send the following information to the International Association of Plumbing and Mechanical Officials, Attention Standards Department, at standards@IAPMOstandards.org and include “Proposal for change” in the subject line:

(a) standard designation (number);

(b) relevant section, table, or figure number, as applicable;

(c) wording of the proposed change, tracking the changes between the original and the proposed wording; and

(d) rationale for the change.

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