What causes municipal water to be cloudy like this?

[jwcarlson]

I am neck deep into four water changes and pop the top of my aging/preheat barrel and it looks like this.  It's frustrating, now I don't have water to pump back and will have to do some rapid heating.

 

Anyone else struggle with this?  Pic doesn't do justice for how cloudy and yellow it was.  This was 24 hours from filling.  What's concerning is I didn't notice any excessive cloudiness last night.

[nabokovfan87]

I assume it's due to cleaning the pipes and things being in the water or being released from said pipes.

CC @Bentley Pascoe has some experience with this and @modified lung  may be able to shed some light for us as well given their experience!

[jwcarlson]

It was clear and clean tonight.  This happens fairly frequently, usually to a lessor extent and not yellow.  

I didn't feel comfortable pumping it into tanks is all.  The tanks seem to be OK using unaged and cooler water.  These 4 got changes.

10 gallon CPD jungle

10 qt (currently apisto jail cell)

55 semi qt with new pencil fish and batatta cories

40 breeder community jungle (where plants go to die).  What's crazy is I saw my only kuhli loach for the first time in like 8 months.  I had 7 of them, but actually had 8.  I was just not "vibing" with them so I gave them away.  Finished tearing down the tank and found one.  Plopped him in the 40 and never saw him again until tonight.  He's grown a bit and is plump.  You can see him front left.

These sterbai seem primed to spawn, been seeing a few eggs this cold water change might jar them into dropping.

[AllFishNoBrakes]

The city HAD to have been flushing our pipes the other day. Water was straight brown coming out of all sinks and faucets. Within 24 hours we were back in business and normal.