How to make your own DIY water sensor!

const int Buzzer = 5; //Buzzer pin
const int led = 6; //Led pin
const int watersensor = 7; //Water Sensor pin
int watersensorstate = 0; //State of the water sensor
// setup (intializes everthings)
void setup() {
pinMode(led, OUTPUT); //set the Led as an output
pinMode(Buzzer, OUTPUT); //set the buzzer as an output as well
pinMode(watersensor, INPUT); //set the water sensor as an input
Serial.begin(9600);//Start the serial connection
}
//loop (Does the actual program)
void loop() {
 watersensorstate = digitalRead(watersensor); 
 //Set the water sensor state as either high depending on the water sensor
 //if it senses water it will turn on the led, pulse the buzzer, and say "Water Detected"
 if(watersensorstate==1){
  digitalWrite(led, HIGH);
  digitalWrite(Buzzer, HIGH);
  delay(150);
  digitalWrite(Buzzer, LOW);
  delay(150);
  Serial.println("Water Detected");
  }
  //otherwise it will do nothing and say "No water Detected"
  else{
    digitalWrite(led, LOW);
    digitalWrite(Buzzer, LOW);
    Serial.println("No water Detected");
    }
}