watertap-org · ksbeattie · Jul 13, 2023 · Jul 10, 2023 · Jul 10, 2023 · Jul 10, 2023
diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/CANDOP_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/CANDOP_zo.rst
@@ -12,8 +12,8 @@ The constraint used to calculate energy consumption is described in the Addition
 
 Costing Method
 --------------
-Costing is calculated using the **cost_CANDOP** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.CANDOP_zo.CANDOPData.cost_CANDOP` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/aeration_basin_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/aeration_basin_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.aeration_basin_zo;aeration_basin_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/air_flotation_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/air_flotation_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.air_flotation_zo;air_flotation_zo

diff --git a/...ference/unit_models/zero_order_unit_models/anaerobic_digestion_oxidation_zo.rst b/...ference/unit_models/zero_order_unit_models/anaerobic_digestion_oxidation_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.anaerobic_digestion_oxidation_zo;anaerobic_digestion_oxidation_zo

diff --git a/...eference/unit_models/zero_order_unit_models/anaerobic_digestion_reactive_zo.rst b/...eference/unit_models/zero_order_unit_models/anaerobic_digestion_reactive_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/...technical_reference/unit_models/zero_order_unit_models/anaerobic_mbr_mec_zo.rst b/...technical_reference/unit_models/zero_order_unit_models/anaerobic_mbr_mec_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_anaerobic_mbr_mec** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.anaerobic_mbr_mec_zo.AnaerobicMBRMECZOData.cost_anaerobic_mbr_mec` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.anaerobic_mbr_mec_zo;anaerobic_mbr_mec_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/automate_rst_file_wt3.py b/docs/technical_reference/unit_models/zero_order_unit_models/automate_rst_file_wt3.py
diff --git a/...unit_models/zero_order_unit_models/autothermal_hydrothermal_liquefaction_zo.rst b/...unit_models/zero_order_unit_models/autothermal_hydrothermal_liquefaction_zo.rst
@@ -12,8 +12,8 @@ The constraint used to calculate energy consumption is described in the Addition
 
 Costing Method
 --------------
-Costing is calculated using the **cost_autothermal_hydrothermal_liquefaction** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.autothermal_hydrothermal_liquefaction_zo.ATHTLZOData.cost_autothermal_hydrothermal_liquefaction` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/...al_reference/unit_models/zero_order_unit_models/backwash_solids_handling_zo.rst b/...al_reference/unit_models/zero_order_unit_models/backwash_solids_handling_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.backwash_solids_handling_zo;backwash_solids_handling_zo

diff --git a/...nical_reference/unit_models/zero_order_unit_models/bio_active_filtration_zo.rst b/...nical_reference/unit_models/zero_order_unit_models/bio_active_filtration_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.bio_active_filtration_zo;bio_active_filtration_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/bioreactor_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/bioreactor_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.bioreactor_zo;bioreactor_zo

diff --git a/...echnical_reference/unit_models/zero_order_unit_models/blending_reservoir_zo.rst b/...echnical_reference/unit_models/zero_order_unit_models/blending_reservoir_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.blending_reservoir_zo;blending_reservoir_zo

diff --git a/...echnical_reference/unit_models/zero_order_unit_models/brine_concentrator_zo.rst b/...echnical_reference/unit_models/zero_order_unit_models/brine_concentrator_zo.rst
@@ -12,8 +12,8 @@ The constraint used to calculate energy consumption is described in the Addition
 
 Costing Method
 --------------
-Costing is calculated using the **cost_brine_concentrator** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.brine_concentrator_zo.BrineConcentratorZOData.cost_brine_concentrator` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/buffer_tank_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/buffer_tank_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.buffer_tank_zo;buffer_tank_zo

diff --git a/...hnical_reference/unit_models/zero_order_unit_models/cartridge_filtration_zo.rst b/...hnical_reference/unit_models/zero_order_unit_models/cartridge_filtration_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.cartridge_filtration_zo;cartridge_filtration_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/centrifuge_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/centrifuge_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_centrifuge** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.centrifuge_zo.CentrifugeZOData.cost_centrifuge` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/...technical_reference/unit_models/zero_order_unit_models/chemical_addition_zo.rst b/...technical_reference/unit_models/zero_order_unit_models/chemical_addition_zo.rst
@@ -12,8 +12,8 @@ The constraint used to calculate energy consumption is described in the Addition
 
 Costing Method
 --------------
-Costing is calculated using the **cost_chemical_addition** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.chemical_addition_zo.ChemicalAdditionZOData.cost_chemical_addition` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/chlorination_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/chlorination_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_chlorination** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.chlorination_zo.ChlorinationZOData.cost_chlorination` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/clarifier_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/clarifier_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.clarifier_zo.ClarifierZOData.cost_clarifier` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.clarifier_zo;clarifier_zo

diff --git a/...ical_reference/unit_models/zero_order_unit_models/cloth_media_filtration_zo.rst b/...ical_reference/unit_models/zero_order_unit_models/cloth_media_filtration_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.cloth_media_filtration_zo.ClothMediaFiltrationData.cost_cloth_media_filtration` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.cloth_media_filtration_zo;cloth_media_filtration_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/co2_addition_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/co2_addition_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.co2_addition_zo;co2_addition_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/coag_and_floc_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/coag_and_floc_zo.rst
@@ -12,8 +12,8 @@ The constraint used to calculate energy consumption is described in the Addition
 
 Costing Method
 --------------
-Costing is calculated using the **cost_coag_and_floc** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.coag_and_floc_zo.CoagulationFlocculationZOData.cost_coag_and_floc` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/cofermentation_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/cofermentation_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_cofermentation** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.cofermentation_zo.CofermentationZOData.cost_cofermentation` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.cofermentation_zo;cofermentation_zo

diff --git a/...hnical_reference/unit_models/zero_order_unit_models/constructed_wetlands_zo.rst b/...hnical_reference/unit_models/zero_order_unit_models/constructed_wetlands_zo.rst
@@ -8,8 +8,8 @@ See documentation for :ref:`single-input, single-output Helper Methods<siso_meth
 
 Costing Method
 --------------
-Costing is calculated using the **cost_constructed_wetlands** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.constructed_wetlands_zo.ConstructedWetlandsZOData.cost_constructed_wetlands` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.constructed_wetlands_zo;constructed_wetlands_zo

diff --git a/...ference/unit_models/zero_order_unit_models/conventional_activated_sludge_zo.rst b/...ference/unit_models/zero_order_unit_models/conventional_activated_sludge_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.conventional_activated_sludge_zo;conventional_activated_sludge_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/cooling_supply_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/cooling_supply_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.cooling_supply_zo;cooling_supply_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/cooling_tower_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/cooling_tower_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/decarbonator_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/decarbonator_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.decarbonator_zo;decarbonator_zo

diff --git a/...chnical_reference/unit_models/zero_order_unit_models/deep_well_injection_zo.rst b/...chnical_reference/unit_models/zero_order_unit_models/deep_well_injection_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_deep_well_injection** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.deep_well_injection_zo.DeepWellInjectionZOData.cost_deep_well_injection` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 Additional Variables
 --------------------

diff --git a/...cal_reference/unit_models/zero_order_unit_models/dissolved_air_flotation_zo.rst b/...cal_reference/unit_models/zero_order_unit_models/dissolved_air_flotation_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.dissolved_air_flotation_zo;dissolved_air_flotation_zo

diff --git a/docs/technical_reference/unit_models/zero_order_unit_models/dmbr_zo.rst b/docs/technical_reference/unit_models/zero_order_unit_models/dmbr_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_dmbr** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.unit_models.zero_order.dmbr_zo.DMBRZOOData.cost_dmbr` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.dmbr_zo;dmbr_zo

diff --git a/...nical_reference/unit_models/zero_order_unit_models/dual_media_filtration_zo.rst b/...nical_reference/unit_models/zero_order_unit_models/dual_media_filtration_zo.rst
@@ -13,8 +13,8 @@ See documentation for :ref:`Helper Methods for Electricity Demand<electricity_me
 
 Costing Method
 --------------
-Costing is calculated using the **cost_power_law_flow** method in the zero-order costing package.
-See documentation for the :ref:`zero-order costing package<zero_order_costing>`.
+Costing is calculated using the :py:meth:`~watertap.core.zero_order_base.ZeroOrderBaseData.cost_power_law_flow` method.
+For full details on costing, see documentation for the :ref:`zero-order costing package<zero_order_costing>`.
 
 .. index::
    pair: watertap.unit_models.zero_order.dual_media_filtration_zo;dual_media_filtration_zo