In short Clogged drippers are caused by particles, limescale or algae – usually due to a missing or poorly maintained filter. Solution: flush or descale the drippers, clean the filter element and always install a 120 Mesh filter upstream. A pressure drop after the filter indicates that cleaning is due.
Uneven water delivery or individual dry plants are the classic sign: a dripper is clogged. The cause is almost always particles, limescale or algae – and in most cases a missing or neglected filter. With the right maintenance, the system runs reliably again.
The most common causes
| Symptom | Cause | Solution |
|---|---|---|
| Individual drippers without water | Dirt particles in the outlet | Flush/clean the dripper; check the filter |
| White deposits | Limescale (hard water) | Descale the dripper; use pressure-compensating drippers if needed |
| Slimy coating | Algae (light + nutrients) | Disc filter, cover the lines, flush |
| Pressure too low at the end | Zone too long / pressure loss | Split zones, increase diameter |
Maintaining the filter correctly
- Depressurise the system and open the filter housing.
- Remove the sieve or disc element and rinse it under clean water (fan out the discs if necessary).
- Check the seal, insert the element, close the housing.
- Slowly open the valve and flush the system through once.
A visible pressure drop after the filter is the best signal that cleaning is due.
How to prevent it
- Always place a 120 Mesh filter upstream of the drip system.
- Choose a disc filter for well or pond water.
- Open and flush the line ends at the start of the season.
- Before winter, winterize the system.
Expert advice from KLN: We recommend the right filter and the right drip irrigation accessories for your water quality. Send your enquiry now.
Frequently asked questions
Why do my drippers clog?
Due to dirt particles, limescale or algae in the water – almost always the result of a missing or dirty filter.
How do I clean a clogged dripper?
Flush it out, descale if there is limescale. Pressure-compensating drippers are less sensitive.
How often should I clean the filter?
As soon as the pressure after the filter visibly drops – more often with surface water.