在五个使用硅酸钠和氯隔离铁和锰的水系统中进行了现场研究。在其中四个系统中，隔离通常是成功的，但在一个几乎不同时添加硅酸盐和氯的系统中，隔离是不成功的。铁和锰确实在热水器中沉淀，水龙头处没有明显的红色水，客户投诉也很少。铁浓度越高，所需的硅酸盐含量就越少，而当水在水库中长期储存时，客户的投诉似乎也会增加。1985年，在加拿大的两个系统中，硅酸盐和氯的年总化学成本为每人1.25美元1.75美元。其中每人每年1.03至1.14美元用于硅酸盐。硅酸盐剂量可通过膜过滤器过滤处理过的水样，并向上增加剂量，直到滤纸不变色。 包括15个参考文献、表格和图表。

Field studies were conducted at five water systems that used sodium silicate and chlorine to sequester iron and manganese. Sequestering was generally successful in four of the systems but was unsuccessful in one system that was not adding the silicate and chlorine nearly simultaneously. Iron and manganese did precipitate in hot water heaters, with no apparent red water at the tap and few customer complaints. Higher iron concentrations required less than proportionately higher dosages of silicate, and when water was stored in reservoirs for long periods of time, customer complaints seemed to rise. Total yearly chemical costs for silicate and chlorine were $1.25$1.75 per person in 1985 at the two Canadian systems. Of this cost, $1.03-$1.14 per person per year was for silicate. Silicate dosages can be chosen by filtering treated-water samples through a membrane filter and increasing the dosage upward until the filter paper is not discolored. Includes 15 references, tables, figures.