вопрос по пламбингу

[bazilio]

жил в ричмонде-корыто в душевой синело от воды, теперь в коквитламе-розовеет .от чего зависит и что это такое? кто интересовался? или это краска с труб по которым вода течёт постепенно смывается или это химия какая-то добавленная в воду?
(корыто пластмассовое)

[elena S.]

Blue/green stains on shower curtains and bathtubs are very common in the Lower Mainland. The stain comes from a reaction between Vancouver’s soft water and copper piping, commonly found in household plumbing. When the water sits stagnant for extended periods, the copper pipes can corrode, releasing small amounts of dissolved copper into the water. This copper binds with the soap residue in your bath and produces a stain. The stain can easily be removed with a household cleaner. Lowering the temperature of the hot water can help reduce the staining problem and save money on your heating bill.

Copper concentrations found in the water distribution system is not a health concern. Health Canada has set an aesthetic objective of <1.0 mg/L of copper in drinking water, and the City of Vancouver tests metals concentrations semi annually against Health Canada's guidelines with good results. By letting the tap run for 15 to 30 seconds before use, ensures your water will meet the Health Canada aesthetic guideline for copper in drinking water. To avoid waste, save this water for plant watering.

What's that pink stuff in the bathroom?
The pink stuff is actually produced by naturally occurring bacteria. It is a harmless, airborne bacteria called Serratia marcescens. Presence of the pink bacteria does not have anything to do with the water quality coming out of the faucet distributed by the water system. These bacteria are very common but cannot be seen until after they grow and multiply. Left undisturbed in areas of high humidity at room temperature, the bacteria multiply producing a pinkish-red pigment, or sometimes a dark gray color, on surfaces that are regularly moist."

[badger]

Какая Вы, Елена. Ясно и чётко ответили цитатами.

Да, ерунда всё это. До червей, лезущих из крана, ещё далеко.

В Павловском Посаде из кранов течет вода с красными червями. Власти успокаивают: они безвредны