Can it be irrigated with pool water?

Whether it is because you want to completely empty the pool to clean it or because of the rain, you had to empty part of it, it is common to wonder if can be irrigated with pool water or we will cause damage to our plants.

To find the solution, we must understand what is the water in our swimming pool. Initially, without knowing too much, we can understand that the very large amount of chlorine it contains to keep it clean is absolutely toxic to plants and we will kill them.

Nothing could be further from the truth…

We are going to know what are the normal parameters that must have pool waterin particular the chlorine content (because it is an element which, in excess, generates phytotoxicity for plants) and conductivity.


Ideal parameters for a swimming pool and for irrigation

Optimal parameters for a swimming pool use for watering
pH: between 7 and 7.8 suitable for watering
Free chlorine: 0.5-2.5 mg/L Up to 30 mg/L without toxicity problems in sensitive species
Temperature: 24-30°C suitable for watering
Nitrates: <20mg/L suitable for watering
Iron: <0.3mg/L suitable for watering
Copper: <1.5mg/L suitable for watering
Conductivity: <1.7mS/cm suitable for watering
Hardness: 150-250mg/L suitable for watering

Water with pool water

Looking at the data above, you can water any type of plant in your garden without any problemincluding susceptible species.

In fact, most well water in areas with low access to water, such as the Mediterranean coast, in many cases uses lower quality irrigation water, both in terms of chlorine content and conductivity. total.

Therefore, if you need to partially or completely empty the pool, do not doubt that you can enjoy the water to water your plants.

Of course, avoid mixing the water with inorganic fertilizers, as they add a considerable volume of salts which can increase the final conductivity of the water.

If in doubt, measure the conductivity

If you have a saltwater pool, it is usually much more dilute in salt than seawater, so in most cases you can irrigate with pool water of this type as well.

However, as there are many exceptions, measuring conductivity is the best and easiest way to check if you can irrigate. In general, below 3 mS/cm it is suitable for irrigation, although species very sensitive to sodium would be avoided.

Homtiky Digital pH Meter, 4 in 1 EC Temperature TDS Meter, Calibrated Digital pH Meter for Water Quality, 0-14 pH Peachimeter, 0-9999ppm Auto Calibration

Homtiky Digital pH Meter, 4 in 1 EC Temperature TDS Meter, Calibrated Digital pH Meter for Water Quality, 0-14 pH Peachimeter, 0-9999ppm Auto Calibration

  • 【4 in 1 set】The 2 meters with LCD screen is suitable for measuring pH, TDS, conductivity and temperature. It only takes 5 seconds to know the water quality, very quick and convenient.
  • 【Precise Measurement】pH measurement range: 0.00-14.00pH, resolution: 0.01pH, accuracy: +/- 0.01pH. TDS test range is 0-9999ppm, Accuracy: ±2% FS Will produce accurate results when used correctly, more convenient than paper strips.
  • 【Automatic Calibration】The pH tester can self-calibrate at three points (accuracy is 0.1 ph). No adjustment is necessary before use. It is very convenient to use.
  • 【Backlight】LCD backlight design makes the data display clearer than other meters without light. You can see the data easily even in dark environment.
  • 【Multiple Applications】Homtiky pH meter can be widely used: test pH value and quality of drinking water, aquariums, swimming pools, spas and wine, tap water, well water, sea water, amniotic water, lead, aquaculture, food processing, saliva, enzyme, chemical experiment, ionized water, human urine pH, etc Help you distinguish water quality in daily life.

the conductivity meter It’s a very simple and inexpensive device to get, and it’s part of any pool kit you can find.

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