A method, comprising: receiving, by a system comprising at least one processor, sensor data representing one or more measured engine parameters of a turbine engine; determining, by the system, at least one performance parameter of the turbine engine based on the sensor data, the at least one performance parameter representing one or more particulate values associated with the turbine engine, wherein the one or more particulate values are indicative of particulate accumulation within the turbine engine; generating, by the system, a health state associated with the turbine engine using the one or more particulate values and a contamination accumulation model that predicts the particulate accumulations within the turbine engine, wherein the health state represents an accumulated health condition or an amount of degradation or a remaining operational life of the turbine engine or a component thereof; generating, by the system, a wash identifier based on the health state associated with the turbine engine, wherein the wash identifier is indicative of: a wash type and a wash timing for washing the turbine engine; and/or a wash scope for washing the turbine engine; determining, by the system, data indicative of an actual performance recovery achieved by one or more wash events; and determining, by the system, in response to the determined data indicative of the actual performance recovery achieved, at least one of: data indicative of a necessity for an additional wash, data indicative of a remaining useful life of the turbine engine, and data indicative of a remaining useful life of a component of the turbine engine. receiving, by a system comprising at least one processor, sensor data representing one or more measured engine parameters of a turbine engine; determining, by the system, at least one performance parameter of the turbine engine based on the sensor data, the at least one performance parameter representing one or more particulate values associated with the turbine engine, wherein the one or more particulate values are indicative of particulate accumulation within the turbine engine; generating, by the system, a health state associated with the turbine engine using the one or more particulate values and a contamination accumulation model that predicts the particulate accumulations within the turbine engine, wherein the health state represents an accumulated health condition or an amount of degradation or a remaining operational life of the turbine engine or a component thereof; generating, by the system, a wash identifier based on the health state associated with the turbine engine, wherein the wash identifier is indicative of: a wash type and a wash timing for washing the turbine engine; and/or a wash scope for washing the turbine engine; determining, by the system, data indicative of an actual performance recovery achieved by one or more wash events; and determining, by the system, in response to the determined data indicative of the actual performance recovery achieved, at least one of: data indicative of a necessity for an additional wash, data indicative of a remaining useful life of the turbine engine, and data indicative of a remaining useful life of a component of the turbine engine. a wash type and a wash timing for washing the turbine engine; and/or a wash scope for washing the turbine engine; determining, by the system, data indicative of an actual performance recovery achieved by one or more wash events; and determining, by the system, in response to the determined data indicative of the actual performance recovery achieved, at least one of: data indicative of a necessity for an additional wash, data indicative of a remaining useful life of the turbine engine, and data indicative of a remaining useful life of a component of the turbine engine.