Smart Water Tank Overflow + Bill Saving System (Advanced)

🌍 Introduction

Water overflow problem almost har ghar me hoti hai:

Tank overflow hota hai

• Tank overflow hota hai

Paani waste hota hai

• Paani waste hota hai

Electricity waste hoti hai

• Electricity waste hoti hai

Motor dry run hoti hai

• Motor dry run hoti hai

Bill unnecessary increase hota hai

• Bill unnecessary increase hota hai

Is problem ko solve karne ke liye maine design kiya hai:

🔥 Smart Water Tank Overflow + Bill Saving System (Advanced)

🔥 Smart Water Tank Overflow + Bill Saving System (Advanced)

Ye system:

✔ Tank level monitor karta hai✔ Pump automatically control karta hai✔ Overflow prevent karta hai✔ Dry run protect karta hai✔ Electricity bill reduce karta hai

🔥 Problem Statement

Traditional water systems:

❌ Manual motor ON/OFF❌ Overflow detection nahi❌ Dry run protection nahi❌ Electricity waste❌ High electricity bill

Result: Water + money dono waste.

💡 Proposed Advanced Solution

✔ Ultrasonic Water Level Monitoring✔ Automatic Pump ON/OFF✔ Dry Run Protection✔ Overload Protection✔ Electricity Usage Tracking✔ Estimated Water Pump Bill✔ MQTT Cloud Monitoring✔ Mobile Notification

🧰 Required Hardware

1️⃣ ESP32 (Main Controller)

Role:

WiFi communication

• WiFi communication

Logic control

• Logic control

Cloud connectivity

• Cloud connectivity

2️⃣ Ultrasonic Sensor (Water Level)

Role:

Tank water level detection

• Tank water level detection

3️⃣ PZEM-004T (Energy Monitor – Advanced Version)

Role:

Pump electricity consumption tracking

• Pump electricity consumption tracking

Bill estimation

• Bill estimation

4️⃣ Relay / Contactor

Role:

Pump motor control

• Pump motor control

5️⃣ 5V SMPS Power Supply

🔌 Circuit Diagram

🔗 Complete Wiring

Ultrasonic Sensor → ESP32

Trig → GPIO5Echo → GPIO18VCC → 5VGND → GND

Relay → ESP32

IN → GPIO4VCC → 5VGND → GND

PZEM → ESP32

TX → GPIO16RX → GPIO175V → 5VGND → GND

⚙️ Working Logic

1️⃣ Measure tank level2️⃣ If water level < 30% → Pump ON3️⃣ If water level > 90% → Pump OFF4️⃣ Track pump electricity consumption5️⃣ Calculate estimated bill6️⃣ Publish data to MQTT

💻 Complete ESP32 Code (Core Logic)

#include <WiFi.h>
#include <PubSubClient.h>
#include <PZEM004Tv30.h>

#define TRIG_PIN 5
#define ECHO_PIN 18
#define RELAY_PIN 4

#define PZEM_RX 16
#define PZEM_TX 17

float tankHeight = 100.0;
float lowLevel = 30;
float highLevel = 90;
float electricityRate = 6.0;

WiFiClient espClient;
PubSubClient client(espClient);
HardwareSerial pzemSerial(2);
PZEM004Tv30 pzem(pzemSerial, PZEM_RX, PZEM_TX);

void setup() {
Serial.begin(115200);
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
pinMode(RELAY_PIN, OUTPUT);
digitalWrite(RELAY_PIN, HIGH);
}

void loop() {

digitalWrite(TRIG_PIN, LOW);
delayMicroseconds(2);
digitalWrite(TRIG_PIN, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG_PIN, LOW);

long duration = pulseIn(ECHO_PIN, HIGH);
float distance = duration * 0.034 / 2;
float levelPercent = ((tankHeight - distance) / tankHeight) * 100;

float energy = pzem.energy();
float bill = energy * electricityRate;

if(levelPercent < lowLevel){
digitalWrite(RELAY_PIN, LOW);
}

if(levelPercent > highLevel){
digitalWrite(RELAY_PIN, HIGH);
}

Serial.print("Water Level: ");
Serial.println(levelPercent);

Serial.print("Estimated Pump Bill: ");
Serial.println(bill);

delay(5000);
}

#include <WiFi.h>
#include <PubSubClient.h>
#include <PZEM004Tv30.h>

#define TRIG_PIN 5
#define ECHO_PIN 18
#define RELAY_PIN 4

#define PZEM_RX 16
#define PZEM_TX 17

float tankHeight = 100.0;
float lowLevel = 30;
float highLevel = 90;
float electricityRate = 6.0;

WiFiClient espClient;
PubSubClient client(espClient);
HardwareSerial pzemSerial(2);
PZEM004Tv30 pzem(pzemSerial, PZEM_RX, PZEM_TX);

void setup() {
  Serial.begin(115200);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, HIGH);
}

void loop() {

  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  long duration = pulseIn(ECHO_PIN, HIGH);
  float distance = duration * 0.034 / 2;
  float levelPercent = ((tankHeight - distance) / tankHeight) * 100;

  float energy = pzem.energy();
  float bill = energy * electricityRate;

  if(levelPercent < lowLevel){
    digitalWrite(RELAY_PIN, LOW);
  }

  if(levelPercent > highLevel){
    digitalWrite(RELAY_PIN, HIGH);
  }

  Serial.print("Water Level: ");
  Serial.println(levelPercent);

  Serial.print("Estimated Pump Bill: ");
  Serial.println(bill);

  delay(5000);
}

💰 Bill Saving Concept

If pump runs unnecessarily:

Extra 30–60 minutes daily

• Extra 30–60 minutes daily

1HP motor consumes approx 0.75 kW

• 1HP motor consumes approx 0.75 kW

Monthly waste ≈ 20–30 units

• Monthly waste ≈ 20–30 units

Extra bill ≈ ₹120–₹200

• Extra bill ≈ ₹120–₹200

This system prevents unnecessary runtime and saves electricity cost.

🏠 Applications

✔ Homes✔ Apartments✔ Hostels✔ Farms✔ Commercial buildings

💼 Business Opportunity

✔ Smart home product✔ IoT water management system✔ Commercial building automation✔ Scalable smart utility solution

📞 Project Support

For:

✔ Complete Code✔ PCB Design✔ Android App✔ Web Dashboard✔ Commercial Deployment

📲 WhatsApp: +91 9336183481

🏁 Conclusion

Smart Water Tank Overflow + Bill Saving System ensures:

✔ No water overflow✔ Automatic pump control✔ Electricity bill saving✔ Real-time monitoring✔ IoT based automation

A practical and scalable smart utility solution.