👋 Get started: Select sites using Manual Selection or Query Engine

Water Quality Analytics

AI Water Quality Assistant

Ask questions about sites, sensors, observations, and trends

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Hello! I'm your water quality assistant. I can help you analyze data, identify trends, and answer questions about Iowa's water quality. Try asking me:

  • "What are the nitrate levels at Cedar Rapids?"
  • "Show me sites with elevated turbidity in the last week"
  • "Compare water quality trends between Iowa River and Cedar River"
  • "What's the correlation between rainfall and nitrate levels?"

Marketplace of Ideas

Discover and share water quality analyses from the community

My Library

Data Export

Want the entire IWQIS dataset? Daily-updated all-sites, all-time extracts are ready to download.

Export Configuration

Aggregated tiers report n, mean, min, max and stddev per bucket.
Uncheck for long — one row per reading, which keeps min/max/stddev on the aggregated tiers.
No sites selected — will export all sites
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API Access

Access real-time data programmatically via our REST API. Read endpoints are open — no key needed. Please cite the DOI if you publish, and use the daily extracts below for bulk downloads rather than paging this.

/api/v1/sites
View API Documentation →