diff --git a/opm/core/utility/thresholdPressures.hpp b/opm/core/utility/thresholdPressures.hpp
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+++ b/opm/core/utility/thresholdPressures.hpp
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+/*
+  Copyright 2014 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPM_THRESHOLDPRESSURES_HEADER_INCLUDED
+#define OPM_THRESHOLDPRESSURES_HEADER_INCLUDED
+
+namespace Opm
+{
+
+    /// \brief Make a vector of pressure thresholds from deck input.
+    /// This function looks at EQLOPTS, THPRES and EQLNUM to determine
+    /// pressure thresholds.  It does not considered the case where
+    /// the threshold values are defaulted, in which case they should
+    /// be determined from the initial, equilibrated simulation state.
+    /// \tparam    Grid           Type of grid object (UnstructuredGrid or CpGrid).
+    /// \param[in] deck           Input deck, EQLOPTS and THPRES are accessed from it.
+    /// \param[in] eclipseState   Processed eclipse state, EQLNUM is accessed from it.
+    /// \param[in] grid           The grid to which the thresholds apply.
+    /// \return                   A vector of pressure thresholds, one
+    ///                           for each face in the grid. A value
+    ///                           of zero means no threshold for that
+    ///                           particular face. An empty vector is
+    ///                           returned if there is no THPRES
+    ///                           feature used in the deck.
+    template <class Grid>
+    std::vector<double> thresholdPressures(DeckConstPtr deck, EclipseStateConstPtr eclipseState, const Grid& grid)
+    {
+        // Is the EQLOPTS option THPRES activated?
+        bool has_thpres_option = false;
+        if (deck->hasKeyword("EQLOPTS")) {
+            auto eqlopts = deck->getKeyword("EQLOPTS");
+            auto rec = eqlopts->getRecord(0);
+            for (size_t i = 0; i < rec->size(); ++i) {
+                if (rec->getItem(i)->getString(0) == "THPRES") {
+                    has_thpres_option = true;
+                } else if (rec->getItem(i)->getString(0) == "IRREVERS") {
+                    OPM_THROW(std::runtime_error, "Cannot use IRREVERS version of THPRES option, not implemented.");
+                }
+            }
+        }
+
+        // Do we have the THPRES keyword?
+        // Check for consistency.
+        const bool has_thpres_keyword = deck->hasKeyword("THPRES");
+        if (has_thpres_keyword != has_thpres_option) {
+            OPM_THROW(std::runtime_error, "Invalid deck, the THPRES keyword must be present and the THPRES "
+                      "option of EQLOPTS must be used for the threshold pressure feature.");
+        }
+
+        if (has_thpres_option) {
+            // Check for EQLNUM
+            if (!eclipseState->hasIntGridProperty("EQLNUM")) {
+                OPM_THROW(std::runtime_error, "Invalid deck, EQLNUM must be set in order to use THPRES.");
+            }
+
+            // Create threshold pressure table.
+            auto thpres = deck->getKeyword("THPRES");
+            auto eqlnum = eclipseState->getIntGridProperty("EQLNUM")->getData();
+            const int max_eqlnum = *max_element(eqlnum.begin(), eqlnum.end());
+            std::vector<double> thp_table(max_eqlnum * max_eqlnum, 0.0);
+            const int num_records = thpres->size();
+            for (int rec_ix = 0; rec_ix < num_records; ++rec_ix) {
+                auto rec = thpres->getRecord(rec_ix);
+                const int r1 = rec->getItem("REGION1")->getInt(0) - 1;
+                const int r2 = rec->getItem("REGION2")->getInt(0) - 1;
+                const double p = rec->getItem("THPRES")->getSIDouble(0);
+                if (r1 >= max_eqlnum || r2 >= max_eqlnum) {
+                    OPM_THROW(std::runtime_error, "Too high region numbers in THPRES keyword.");
+                }
+                thp_table[r1 + max_eqlnum*r2] = p;
+                thp_table[r2 + max_eqlnum*r1] = p;
+            }
+
+            // Set values for each face.
+            const int num_faces = UgGridHelpers::numFaces(grid);
+            std::vector<double> thpres_vals(num_faces, 0.0);
+            const int* gc = UgGridHelpers::globalCell(grid);
+            auto fc = UgGridHelpers::faceCells(grid);
+            for (int face = 0; face < num_faces; ++face) {
+                const int c1 = fc(face, 0);
+                const int c2 = fc(face, 1);
+                if (c1 < 0 || c2 < 0) {
+                    // Boundary face, skip this.
+                    continue;
+                }
+                const int eq1 = eqlnum[gc[c1]] - 1;
+                const int eq2 = eqlnum[gc[c2]] - 1;
+                thpres_vals[face] = thp_table[eq1 + max_eqlnum*eq2];
+            }
+            return thpres_vals;
+        } else {
+            return std::vector<double>();
+        }
+    }
+
+}
+
+#endif // OPM_THRESHOLDPRESSURES_HEADER_INCLUDED