A natural swimming pond looks like a natural garden pond, but is specifically designed to swim in clean, pure water with no chemicals in it. The difference between a swimming pond and a swimming pool is that a swimming pool uses chemicals such as chlorine to kill bacteria, whereas a swimming pond cleanses the water naturally. It uses the purifying properties of plants, a filter to extract surface debris such as leaves, and a pump to keep the water circulating through the planting area. Nevertheless, the water quality has to be checked regularly to make sure that the bathers are safe under all circumstances, e.g. microorganism and other biological, chemical and physical components.

Chemical Requirements for fresh water - possibly after preconditioning*

Parameter

Guide Value

Ammonia

≤ 0,5 mg/l

Iron

≤ 0,2 mg/l

Total Phosphorus [Ptotal]

≤ 0,03 mg/l

Hardness (Total alkaline earths)
match Total Hardness

≥ 1,0 mmol/l
≥ 5,6 dH°

Conductivity

≤ 1000 µS/cm at 20 °C

Manganese

≤ 0,05 mg/l

Nitrate

≤ 50,0 mg/l

ortho Phosphate
(Specified as P)

≤ 0,01 mg/l

pH value

6,0 - 9,0

Acid capacity KS4.3
match Carbonate hardness

≥ 2,0 mmol/l
≥ 5,6 dH°

* Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau e.V. (FLL). Richtlinien für Planung, Bau, Instandhaltung von privaten Schwimm- und Badeteichen, Ausgabe 2017.

Chemical guide values for the usage area

Parameter

Guide Value

Ammonia

≤ 0,3 mg/l

Total Phosphorus [Ptotal]

≤ 0,03 mg/l (Type I - III)
≤ 0,01 mg/l (Type IV, V)

Hardness (Total alkaline earths)
match Total Hardness

≥ 1,0 mmol/l
≥ 5,6 dH°

Conductivity

≤ 1000 µS/cm at 20 °C

Nitrate

≤ 30,0 mg/l

Nitrite

≤ 0,01 mg/l

ortho Phosphate
(Specified as P)

≤ 0,03 mg/l (Type I - III)
≤ 0,01 mg/l (Type IV, V)

pH value

7,0 - 9,0

Acid capacity KS4.3
match Carbonate hardness

≥ 2,0 mmol/l
≥ 5,6 dH°