Clean Water, Living Ecosystems
Nature-based water treatment for beaches, neighborhoods, and resorts — with live public metrics and community stewardship.
Last updated: —. Data refresh every 15 minutes.
Swimming Safety Index
Note: Local health advisories take precedence. Thresholds follow international bathing water guidance.
E. coli CFU/100 mL
Indicator of fecal contamination. Lower is better.
BOD (mg/L)
Oxygen needed to break down organic matter. Lower is better.
DO (mg/L)
Higher is better for fish and aquatic life.
Before / After — Site photo
Drag the slider to compare. Replace images with your site photos.
Before / After — Key metrics
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Lower is better for E. coli, BOD, turbidity, and odor; higher is better for dissolved oxygen.
Sites & status
| Location | Status | Notes |
|---|
Status is computed from recent E. coli, clarity, and DO measurements and visible inspections.
How AquaSai works
AquaSai builds Multi‑Stage Recirculating constructed wetlands (MSR). Water flows through planted basins where roots and biofilms remove pollutants, then recirculates for polishing.
- Stage 1: Settling & grit removal (protects plants).
- Stage 2: Anaerobic zone for organic load reduction.
- Stage 3: Aerated gravel beds for nitrification.
- Stage 4: Planted polishing pond for clarity and biodiversity.
MSR = Multi-Stage Recirculating Wetlands (ระบบบ่อพืชบำบัดแบบหมุนเวียนหลายขั้นตอน)
What changes on the ground
- Odors drop as COD and BOD fall.
- Water clears; mosquito predators (dragonflies) return.
- Beaches and streams become safer and nicer to enjoy.
- Green jobs in monitoring, gardening, and maintenance.
What we measure (open data)
- E. coli (rapid test, lab-validated)
- DO, Temperature, pH, Turbidity
- Nutrients: Ammonia, Nitrate, Phosphate
- Flow treated and wetland performance
Data are published with methods and timestamps. Local advisories always prevail.
Liters treated today
Cumulative inflow across MSR systems.
Nutrients removed (30d)
Estimated TN/TP capture via biofilm and harvesting.
Wetland uptime
Percentage of time systems run within targets.
Biodiversity sightings
Dragonflies, frogs, fish, and wetland plants recorded.
Why it matters
Koh Phangan’s beaches, mangroves, and coral reefs are the island’s heart. Tourism surges and aging pipes have strained waterways, causing odors and unsafe bacteria spikes after storms and busy events. Nature-based systems reduce loads at the source and make coasts resilient.
Where we’re starting
- Haad Rin watershed (pilot cluster)
- Resort and village outfalls near beaches
- High-visibility sites for community learning
We prioritize hotspots to show rapid, public benefits.
How to help
- Host a wetland on your property
- Fund a sensor or plant bed
- Join monthly monitoring walks
Plain-language glossary
E. coli (CFU/100 mL)
Bacteria indicating fecal contamination. Measured as colony-forming units per 100 mL. Lower is safer.
BOD & COD
BOD and COD show how much oxygen pollution will consume. Lower is better.
DO, Turbidity, TSS
DO should be high. Turbidity and TSS should be low.
MSR constructed wetlands
Multi‑Stage Recirculating systems move water through planted gravel beds and ponds so roots and microbes remove pollutants naturally.
Nutrients: Ammonia, Nitrate, Phosphate
Excess nutrients cause algal blooms and odors. Wetlands capture them in biofilms and plant tissues.
FAQ
Is the water safe for swimming?
We publish a “Safety Index” and raw data. Always follow local advisories, especially after heavy rain.
Do wetlands replace sewers?
They complement and offload existing systems, cleaning water near sources and preventing overflows.
How fast do results appear?
Odor reductions can be felt within weeks; bacteria and clarity improve progressively as plants establish.