Blog
Field notes on water quality monitoring, sensor hardware, contractor partnerships, and the BlueSignal stack.
- October 8, 2026·4 min read
Rainwater installer credentials: ASSE 21110, ARCSA and the Texas licenses
The credentials and licenses that matter for rainwater harvesting work in Texas: ASSE 21110, ARCSA, the 63-2020 standard, TCEQ and the plumbing board.
- October 8, 2026·5 min read
How to add rainwater harvesting to a plumbing, irrigation or landscape business in Texas
Who does which part of a rainwater job in Texas, which licenses apply, how to size and price a system, and where rebates come in. A guide for the trades.
- October 7, 2026·4 min read
Is Your Rainwater Safe to Drink? What to Test, and When
Rainwater isn't automatically fit to drink. What gets into a cistern, how it's treated, how often to test, and what continuous monitoring shows between lab tests.
- October 7, 2026·4 min read
What a Rainwater System Costs in Central Texas (2026)
2026 costs for rainwater systems in Central Texas, from a garden tank around $1,000 to a $45,000+ whole-house supply, plus the rebates and tax breaks that cut the price.
- April 26, 2026·2 min read
Welcome to BlueSignal — open hardware for water quality
Why we built the WQM-1 — a continuous-monitoring sensor stack for tanks, ponds, and treatment systems built on Raspberry Pi.