int resval = 0; // holds the value
int respin = A0; // sensor pin used

void setup() {
    // start the serial console
    Serial.begin(9600);
}

void loop() {
    resval = analogRead(respin); // Read data from analog pin and store it to resval variable
    
    if (resval <= 100) {
        Serial.println("Water Level: Empty");
    }
    else if (resval > 100 && resval <= 300) {
        Serial.println("Water Level: Low");
    }
    else if (resval > 300 && resval <= 330) {
        Serial.println("Water Level: Medium");
    }
    else if (resval > 330) {
        Serial.println("Water Level: High");
    }

    delay(1000);
}