WastewaterCA

• Every answer names the pathogen, the geography it covers (the configured region by name, or California statewide) and the latest data date, so no figure reads as real-time. The date comes from the dataset's own week or sample date.
• A COVID answer gives CDC's own activity level per site and the week-over-week direction; a panel answer covers every pathogen target the CDPH data carries in the past year.
• Figures come from a pull made in this run through Tools/Wastewater.ts, with the dataset named so the value can be checked.

First-time setup, accounts and a proof command: Setup.md.

• Region: ~/.claude/LIFEOS/USER/CUSTOMIZATIONS/SKILLS/WastewaterCA/Config.md (or the file WASTEWATER_CONFIG names) holds - region:, - counties: as Name FIPS pairs, and an optional - rpho region: for the clinical layer. bun skills/WastewaterCA/Tools/Wastewater.ts config prints what a run resolves to.
• Absent: with no Config.md every command runs statewide and says so. A county line without a valid 06xxx FIPS code stops the run with exit 2 rather than silently going statewide.
• No account, key or local dataset; the tool reads public APIs and writes nothing.

• CDPH CSV dates are MM/DD/YYYY — never string-sort them. A lexical compare once reported "Dec 31, 2025" as latest while the data ran into 2026. The tool queries the portal's datastore, where dates are timestamps; parse to real dates in any other path.
• County columns are FIPS codes in CDPH, names in CDC. CDPH county_names holds codes such as 06067; CDC counties_served holds names. Config.md carries both so each source is matched on its own field.
• WVAL is not a concentration. It is CDC's unitless index with pathogen-specific category cut-offs; report CDC's category, never a threshold of your own.
• The old CDPH statewide COVID file is archived (last week 2025-08-02). Anything still reading wastewater.csv from the Respiratory Virus Weekly Report is reading year-old data.

Example 1: COVID before travel

User: "What are the COVID numbers before my trip?"
→ GetCovidData intent
→ Wastewater.ts covid, then covid --statewide: the week ending date, sites reporting, how many at each CDC level,
  the median site WVAL and its week-over-week direction, region and state side by side

Example 2: Multi-pathogen panel

User: "How are flu and RSV looking in wastewater?"
→ GetWastewaterData intent
→ Wastewater.ts panel: one row per pathogen target with its data date, geography, two-week level against the
  12-month range, trend and sample count

Example 3: Local view with the clinical layer

User: "Is flu actually up around here?"
→ GetWastewaterData intent, with Wastewater.ts covid --pathogen flu and the CHHS dashboard rows for the configured rpho region
→ The regional panel, per-site CDC flu levels, and regional test positivity