u/Cautious_Poetry7942

I am working with a small team on whether a treatment plant can be built more like a standardised product than a bespoke project. First application is reclaimed and STP water to cooling tower makeup spec for data centers.

Physical side: a common chassis carrying the controls, electrical, pumping, and container interfaces. The treatment modules inside get selected per site based on feedwater chemistry. The chassis stays the same everywhere, the modules change.

Controls side monitors feedwater chemistry, conductivity, pressure and flow, membrane differential pressure, permeate quality, energy consumption, chemical consumption, and equipment health. The longer-term intent is that operating data from every deployment feeds back so we get better at predicting fouling, scheduling maintenance, dosing, and energy optimisation. AI proposes, PLC decides, hardware responds. No model in the safety path.

We are early enough that finding the problems now is worth more than finding them later.

What I would like to know:

a. What are we likely to underestimate about feedwater variability?

b. At what point does modularisation stop being practical and turn into a custom build with extra steps?

c. How predictable is fouling in real reclaimed-water systems? Predictable enough to schedule against, or not really?

d. What would stop this from running with minimal on-site intervention, and what would you insist on having in a design like this before you'd trust it?

Not looking for validation. If you have operated these systems and think this is a bad approach, that's the most useful thing I could read today.

Happy to go into more detail with anyone who's run reclaimed water systems.

Small team here. We are treating reclaimed and STP effluent to cooling tower makeup spec for large industrial cooling loads, starting with data centers. Train is pretreatment, UF, RO, polishing, configured per site rather than redesigned from scratch every time.

We are also building the controls layer. It watches feedwater chemistry, membrane performance, energy and chemical consumption, and equipment condition. Optimization proposes setpoints, deterministic PLC logic with hard interlocks validates and executes them. Nothing model-driven has authority over a safety function.

Would rather hear from people who work in water than from other startup people.

Things I can't get a straight answer on:

a. How much does STP effluent chemistry actually move in practice? Seasonally, with rainfall, with upstream industrial discharge. Everything I read says "site specific," which is true and also useless when you're trying to size a train. How much headroom does a design need to absorb that without over-building to the worst case?

b. Where do reuse economics usually break? I assume concentrate management and membrane replacement, but I suspect there's something I am not seeing.

c. Is a modular plant realistic at this scale, or does the site-specific work eat the standardisation?

We're treating this as a product rather than an EPC project, and I would particularly love to hear why that won't work.

If you have done reclaimed water into industrial cooling, happy to compare notes.

I am a founder working on modular and fast water supply for data centers. Before we build more of this I want to know whether I have got the problem right.

The story you read everywhere is that land and power are solvable now and water is the thing that holds projects up. A recent report states that Northern Virginia water use is up a lot since 2019, a handful of states have brought in legislation. But reported trends and what actually happens on a project are different things, and I don't have enough project-level input to know which one I'm looking at.

What we are building: containerized treatment plants that take locally available non-potable water, starting with reclaimed and STP effluent, and treat it to cooling tower makeup spec. We'd own and run the plant and sell you the water on a contract rather than selling you equipment. Roughly 5,000 to 10,000 m³/day per unit.

What I want to know:

a. Have you seen water allocation or utility capacity actually hold up a project, or does it get resolved during diligence without much drama?

b. Who owns this internally? Development, facilities, utilities, or does it sit between them and become nobody's problem until late?

c. If you had land and power secured and the utility came back with less water than the campus needed, what would you do today?

If the honest answer is that water gets handled and nobody loses sleep over it, that's worth knowing and I'd rather hear it now.

If you have dealt with this on a real project and are up for a conversation, I would really really appreciate it!

Thanks in advance!

Not sure why I'm posting this but it's 12:30 pm, and I'm still at my desk after 23 hours so here goes.

I'm primarily a corporate lawyer. Spent a few years on the commercial contracts side at Hitachi, now solo, mostly the same kind of work. A civil matter had been sitting with me for a few weeks, client was waiting, I kept finding reasons to delay. Not my area. No junior. Didn't know where to begin.

Last night a guy named Sounak DMed me on Linkedin about something he's been building called Associate. I said fine, gave him 20 minutes.

I dropped the civil case into it just to see what happened. Vakalatnama, some WhatsApp screenshots from the client, party details, type of case. Didn't write a prompt. Didn't explain anything. Just dropped the files like I'd hand a folder to someone and say here, look at this.

It read everything. Understood what kind of case it was, who the parties were, what the client was actually saying in the screenshots. Then it just started working: built out the matter, flagged a limitation issue I hadn't clocked, drafted the plaint grounded in the actual facts it had pulled from my files, and laid out the research next to it. Not generic research. Specific cases, relevant sections, all linked so I could verify them.

The thing that kept getting me was that I hadn't asked it to do most of this. I dropped files and it figured out what needed doing.

I ended up going much deeper than I planned. By the time I came up for air it had a draft timeline, a list of documents still needed from the client, the plaint, the research. The whole shape of the case was just sitting there.

I'm taking it.

I don't know if this is what everyone else's experience has been like. But for me tonight it felt less like using a tool and more like having someone actually read the brief.