Rainwater Enquiries Spike in March. They Should Spike in October.
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Spring enquiries hit a four-week fabrication queue, a frozen or saturated base, and a system that comes online after the wettest months have passed. Ordering in September gets a shorter queue, a workable base, and a full tank before winter.
Our rainwater work is violently seasonal. February to May is roughly two thirds of the year's catchment enquiries, and almost none come in September or October.
That is exactly backwards and it costs customers both money and water.
Why spring feels right
It is obvious why people ask in March. The growing season is coming, the water bill from last summer is a recent memory, and the garden is on your mind for the first time since autumn. Every incentive points at ordering a catchment bank in spring.
Why spring is wrong
1. You are in the queue with everybody else
A three-tote bank is seven to ten business days in October. In April it is three to four weeks, because the shop is full of catchment work and the manifold fittings are on backorder for the same reason.
Nothing about our capacity changes; everybody simply arrives at once.
2. The base cannot be prepared
This is the practical killer, and the step people most often skip and then regret.
A three-tote bank needs a level base — within about half an inch across its whole length — because a filled tote on an uneven base loads two cage corners instead of four and bends its lower horizontals. Compacted gravel at least four inches deep, with a paving slab under each corner, or a poured pad.
In a Midwest March the ground is either frozen or saturated. You cannot compact saturated gravel and you cannot pour on frozen ground. So the bank gets set on whatever is there, and we see those cages back inside three years with bent bottom rails.
In September the ground is dry and workable, and the base can cure or settle for weeks before anything heavy goes on it.
3. You miss the water you were trying to catch
A bank ordered in April, delivered in May, plumbed in late May and commissioned in June comes online after a substantial share of the year's rainfall has already run down the downspout.
Ordered in September, it is catching autumn rain within a fortnight, sits full through winter if you manage the freeze, and is already full on the first day you want it in spring. That is the real prize: starting the growing season with 825 gallons rather than an empty tank and a hope.
4. Autumn rain is the cleanest to store
Less pollen, less tree debris, cooler water, slower biological activity. A tank filled in October and kept dark and covered is in better condition in April than one filled in May is in July.
The one real objection
Freeze. Water expands about 9% when it freezes and a brim-full tote will bulge permanently against the cage.
That is manageable rather than disqualifying, and there are three honest options:
- Fill to 90% and leave it. The 10% headspace absorbs the expansion. This is what most people should do and it keeps nearly all your stored volume.
- Fill, then drain to 90% before the first hard freeze. Slightly more work, same outcome.
- Drain fully and disconnect in November, then refill from the first spring rain. The cautious option, and you forfeit the main benefit.
Option one is the right default. The headspace costs you about 82 gallons of a three-tote bank and removes the failure mode entirely.
The autumn order, laid out
| Step | Order in September | Order in April |
|---|---|---|
| Fabrication lead time | 7 – 10 business days | 3 – 4 weeks |
| Base preparation | Dry, workable ground | Frozen or saturated |
| Base settling time before load | Several weeks | None |
| First water captured | Within 2 weeks | June |
| State on 1 April | Full | Not yet installed |
| Stored water quality | Cool, low debris | Pollen season |
| Fitting availability | Good | Manifold parts on backorder |
What we have started doing about it
Two things. We quote autumn builds at a small discount, because a level shop load is worth more to us than a peak one. And when a spring enquiry comes in that is clearly not urgent, we say this — which occasionally loses the order to somebody who will promise April, and more often wins a better-built system in October.
The same seasonality applies, incidentally, to tote stands, wash stations and compost brewers. Everything in the garden-adjacent half of our catalogue is cheaper, faster and better-installed if you order it in the wrong season.
762 words · published 24 March 2026 by Carla Nystrom, Fabrication lead at IBC Tote Market LLC. We correct posts rather than quietly deleting them; if something here is wrong, tell us and we will say what changed.