Topping Off?

Just curious as to how often people have to top off their pool water? Right now it seems I am having to top off once or twice a week with the weather being cooler in the evenings and no cover at this point and also have kids swimming everyday.

Bama Rambler

Mod Squad
LifeTime Supporter
TFP Expert
Jun 23, 2009
SouthWest Alabama
Right now i won't need to top it off for a few weeks but in a few weeks when it stops raining, I'll probably have to add water about once a week.

If you're concerned about a leak, you can run a bucket test to make sure it's just evaporation you're seeing.
Me and my husband were just talking about doing that tonight. It has been very dry here in the Chicago area, and is still getting cool in the evenings. I am hoping its just evaporation, as we just did a DIY install of a new vinyl liner.


Mod Squad
TFP Expert
Apr 4, 2007
SW Indiana
I'm adding a lot more water this year than is normal. Going through muriatic acid by the truckload with my high TA fill water.


Well-known member
Jun 8, 2011
Ridgefield, CT
I haven't needed to top off, but that is because we have had a crazy amount of rain over the past 3 weeks. Last week, when the weather turned cool, I saw a noticeable decrease in my water level, but still not enough to warrant topping off. I am always grateful for rain to help top off because we have well water, which is hard, although at least it doesn't screw up our pH or alkalinity much.


LifeTime Supporter
Platinum Supporter
Aug 6, 2011
Dont't know if this helps DeeMack, but I'm in Central Illinois. It has been sooooo dry and windy here! I am topping off the pool far more often than what was normal last year. I think it is evaporation.
Thanks "tltmom".......I am 30 min. south of Chicago, in Indiana and we have the same issues here. My grass pretty much looks like straw and we have had alot of wind....I am going to try the bucket test tonight but again it is going to be cool tonight and only in low 70's tomorrow....urghhhhhh


LifeTime Supporter
TFP Expert
Jun 5, 2012
DFW, Texas
If we go a week without rain during the Texas summer, I top off 1-2 times per week. However, I do a lot of lap swimming nearly every day (at a rapid pace) and there is a fair amount of splash out, including water splashing up against (and going down) the overflow drain. My wife's water aerobics workouts add to the splash-out. There's also bound to be some evaporation going on as well, not to mention the water loss due to occasional back-washing of the filter.

I keep my pool operational during the winter even though it is too cold to swim in. I rarely, if ever, have to top it off during the off season.

There is an article on Leak Detection here, including the bucket test.


Well-known member
Jun 21, 2011
Tecumseh, OK
Different part of the country but for reference I have to top off about once a week right now and we've been in the upper 80's low 90's. Once it gets hotter I'm sure it'll be more frequently. Last year it was several times a week during the 3-month long 100+degree heatwave!!


LifeTime Supporter
TFP Expert
Jan 6, 2010
San Dimas, CA (LA County)
It seems to vary more with wind than heat. When we get a lot of wind here, especially those Santa Ana Winds that cause brush fires to go wild, I lose a lot. 1/2" a day. If it's still, even if it's 90 degrees or better, it's more like an inch a week,