EPA Standards Miss Many Chemicals in Drinking Water, Study SaysMore
A dual-sensor TDSBot embeds in your RO product line and reports reject ratio continuously from every deployed unit — field performance data your R&D, sales and OEM teams can each act on, plus a recurring SaaS revenue line.

Your warranty returns tell you something failed. They don't tell you when, at what water chemistry, or whether it was a product failure or an installation failure. TDSBot gives your R&D team continuous field performance data — reject ratio over the membrane's lifetime, across geographies, at scale.
When a distributor asks why your membrane costs more, "98% rejection under lab conditions" is a weak answer. A 24-month reject ratio dataset from 400 real installations — continuous, timestamped, across water chemistries — is not. TDSBot turns your installed base into a living proof point.
After installation, your visibility ends. A warranty return is the first signal that something went wrong — weeks after the fact. TDSBot embeds into your product line and gives you continuous performance visibility across your entire installed base — and a recurring SaaS revenue stream that grows with every unit shipped.
Before the sensor architecture, the reason manufacturers embed it.
Compete on data, not just spec sheets. A 24-month field performance dataset from real installations is a claim your competitors quoting lab-only numbers can't match.
Dual-sensor bypass valve drift detection distinguishes a membrane fault from a valve fault in seconds — instead of replacing membranes that were never the problem.
A one-time hardware margin at installation, plus a recurring per-device SaaS revenue line that compounds with every unit shipped.
Fleet dashboard and CMMS integration turn a warranty return — the first signal something went wrong, weeks late — into a scheduled service call instead of an emergency one.
TDSBot uses a two-sensor configuration: one sensor on the feed water line before the membrane, one on the permeate output. The reject ratio — (TDS_inlet − TDS_outlet) / TDS_inlet — gives a continuous, real-time view of membrane performance that a single outlet sensor cannot provide. A high outlet TDS reading alone doesn't tell you whether the membrane is degraded or the inlet water has changed. The ratio does.
In RO systems with a blend valve — which mixes permeate with bypass water to raise mineral content — there are two separate failure modes that both cause outlet TDS to rise. Only a dual-sensor configuration can tell them apart.
TDSBot dual-sensor architecture adapts to three distinct product categories. Each has different monitoring priorities, different customer expectations, and different service economics.
Large-format RO systems serving hospital kitchens, food manufacturers, commercial laundry, and large food service operations. Water volumes are high, membrane replacement costs are significant, and downtime is unacceptable. The reject ratio alert fires before quality drops — creating a scheduled service call rather than an emergency replacement.
Home RO systems with a blend valve to restore minerals to permeate output. The homeowner has no way to know when their membrane degrades — and no baseline to compare to. TDSBot embeds in the system at manufacture, connects to a consumer app, and provides the first consumer-facing membrane health indicator in the market.
For non-RO inline filters (activated carbon, sediment, ion exchange), TDSBot uses a single-sensor configuration on the outlet — tracking TDS drift against the onboarded baseline as the primary filter depletion signal. For countertop RO units, dual-sensor configuration applies with the same reject ratio model.
The WaterTDS platform handles the hard parts — AWS IoT Core connectivity, data pipeline, alert logic, API, and security — so you don't have to build any of it.
TDSBot hardware ships with co-branding (e.g. "Powered by TDSBot"). Your customers use the WaterTDS app with your property details. You earn revenue share on SaaS subscriptions. Fast to market, no development overhead on your side.
Have something else in mind — fully embedded white-label, direct API access, a different revenue structure?
End-customer plan pricing, OEM hardware cost, white-label fees, and wholesale SaaS rates are all established at contract stage based on volume commitments and integration model. We don't publish a price list for OEM partnerships — the right number depends on your product, your channel, and your scale.
Tiered by annual volume commitment. Significant savings at scale. White-label manufacturing available.
Recurring per-device revenue. OEM wholesale rate established at contract stage. Compounds with every unit shipped.
Covers dashboard customisation, firmware branding, API access, and ongoing platform development.
Japan's Water Supply Act added PFOS and PFOA as mandatory water quality standards in April 2026 — the first time these contaminants have been statutory rather than advisory, with quarterly lab testing now required. Our active MOU partner is a Japanese RO manufacturer deploying TDSBot as the monitoring layer between those mandatory tests.
Active MOU — Japanese RO manufacturer · deployment in progressContinuous reject ratio from dual TDS sensors. When the ratio is high, the membrane is performing. When it falls, performance is declining across all contaminants the membrane removes by the same mechanism.
Can do · continuous monitoringRO membranes remove PFAS and TDS by the same physical mechanisms (size exclusion and charge repulsion). A declining reject ratio indicates declining removal efficiency across the board — including PFAS. This is a reasonable inference for operational purposes, not a measured result.
Inference · reasonable proxyContinuous reject ratio records show the membrane was performing throughout the quarter. TDSBot data supports — but does not replace — the mandatory quarterly lab test.
Can do · supporting documentationTDSBot does not measure PFAS concentration. It measures TDS. Statutory PFAS testing (PFOS/PFOA ≤50 ng/L under Japan 水道法, or EPA health advisory limits) requires laboratory analysis of a water sample by accredited methods. TDSBot cannot substitute for this requirement.
Cannot do · lab testing requiredActive MOU and pilot deployments with leading RO manufacturers across commercial, residential, and institutional segments. White-label hardware, co-brand, or additional architectures discussed under NDA.
Cookies. Some keep the site working. Analytics run only if you allow them, and we use no advertising cookies. Change your answer any time in the Cookie Policy.
© 2020 - 2026 Water TDS Inc. All rights reserved.