What are the turbidity levels entering NO-DES system?
(A) Once the NO-DES system starts circulating the water and stirring up any sediment, the water quality quickly decreases to a brown rusty color with turbidities well over 100 NTU’s. Typically , within two to five minutes water quality returns to accepted distribution system standards. Each water distribution system is different, and conditions could be much better or much worse. For distribution systems that are extremely bad, we recommend that the municipality perform a one time system wide conventional flush prior to implementing the NO-DES system. If this is not performed, you might experience higher filter loading conditions with the NO-DES system; making the first system wide NO-DES flush more costly with frequent cartridge replacements.
