Monitor water consumption and more with Home Assistant

Features

1. Monitor total water consumption per day/week/month

2. Realtime Notification in case of usage irregularity like

   1. Small leakage – e.g. 1 litter/hour

   2. Big leakage – e.g. you child forgot the water opened

Figure 1. per day report

Ingredients

1. HA

2. Appdaemon

3. EV Pulse water meter for example water meter with pulse I’m using Arad with EV

Figure 2. water meter ev

1. Wemo D1 mini with Tasmota firmware

Tasmota configuration

Configure the one of the GPIO to be Counter . Each pulse will increment the counter. However, power cycle will reset the counter. Because of that there is a need for a custom component

Tasmota configuration (once)

CounterDebounce 1000
TelePeriod 60
SetOption36 20

Install HA custom component

Copy this project <config directory>/custom_components/ folder to your <config directory> directory make sure you are in sync with the the right version of hass (see above) after you copy the data you should reboot/restart HA

Enable counter component

Add this to your configuration file.

HA Custom Component

sensor:
  - platform: tasmota
    name: water_total
    stopic: water_out
    id: 1
    unit_of_measurement: 'l'
    icon: mdi:water-pump
    expire_after: 300
    value_template: "{{ (45497 + (value))|int }}"

 - platform: tasmota
    name: water_total_norm
    stopic: water_out
    id: 1
    unit_of_measurement: 'l'
    icon: mdi:water-pump
    expire_after: 300
    value_template: "{{ (37950 + (value/1.21))|int }}"

This will create two sensors, one counting native pulses and one with normalization to litter. My meter should give one pulse to each litter, but due to denounce (hardware) issues I found that there are 20% more pulses that it should be. So I defined two sensors. It would be important for the Appdaemon apps stage.

Appdaemon script

This app is responsible to notify of a real-time irregularity events. The app should get event from another app when there is somebody at home. Using this information the watermarks could be more sensitive to leakage when nobody at home.

custom

water app conf

This is an example for 2 taps

Appdaemon Irrigation configuration

water_monitor:
  module: heat_app
  class: CWaterMonitor
  sensor_water_total: sensor.water_total # input: sensor of water in pulses (not litter)
  sensor_water_leak_detector: variable.water_leak_detector # output: filter one pulse
  sensor_water_bursts: variable.water_bursts # output: filter burst in litters
  watchdog_duration_min: 50 # input: high watermark  in minutes to open a tap
  watchdog_leakage_ticks: 3 # input: how many pulses is a leakage?
  max_day: 2000 # input: max consumption a day
  max_burst_l0: 400  # input: max burst in litters
  max_burst_l1: 600  # input: max burst in litters  when garden taps are open
  taps_switchs: [ switch.wbi_p1, switch.wbi_p2] # when one of them is enabled move to burstl1

Grafana/Influx configuration

First, you should add influxDb and install Grafana. There are some good tutorials how to do that.

Per day consumption (l) for the last 30 days

Figure 3. per day report

Figure 4. query

Figure 5. change the time range

Water bursts (l)

This will shows how much water was consumed in one single burst without closing the water. remember that the Wemo D1 has resolution of 60sec so we can know that there is no water flowing only after 60sec and minimum water pulse it 1 pulse in 60sec.

This is good to identify the guys that like very long shower. The AppDaemon is updating a variable that now you can use

Figure 6. water bursts

This is simple query

Figure 7. query

Water leakage (l)

Identity a lonely single pulses of water (not litter) while you are not at home. This is a signal of a small leakage

Figure 8. water leakage

The query is the same as above but on the leakage variable

Figure 9. query

It is calculated using AppDaemon app

Water flow speed (l/m)

Figure 10. water speed

Figure 11. query