| #R001 | operational | operational | mandatory | Minimum discharge volume for regulatory applicability | wastewater | requirement | >= 100 cubic metres per day | Applies to owners and operators of wastewater systems that collect and discharge 100 cubic metres or more of effluent per day. | | high |
| #R002 | operational | operational | mandatory | Minimum discharge volume for regulatory applicability (influent) | wastewater | requirement | >= 100 cubic metres per day | They also set achievable national effluent quality standards for owners and operators of wastewater systems that collect and discharge up to 100 cubic metres or more of influent per day. | | high |
| #R003 | operational | operational | mandatory | Minimum discharge volume for regulatory applicability (effluent) | wastewater | requirement | >= 100 cubic metres per day | They also set achievable national effluent quality standards for owners and operators of wastewater systems that collect and discharge up to 100 cubic metres or more of effluent per day. | | high |