Water Quality — app.lemeit.ar/wq

Monitoring of tap water quality in Saladillo: arsenic, nitrates, nitrites, fluoride, heavy metals and bacteriological parameters (total coliforms, E. coli, Pseudomonas aeruginosa) across dozens of points in the municipal network (pumps, schools, kindergartens, households).

Repository: github.com/lemeit/lemeit-wq

Origin and status (August 2026)

It existed as a loose file (docs/agua_saladillo.html) inside the ema-saladillo repo; it was migrated to its own repo in August 2026 to evolve independently, like the other two sibling projects.

Unlike Air and EMA, it doesn't have a public data API yet: the samples (RAW) and the regulatory limits (LIM) are still embedded as a JS object inside index.html itself, with no database or backend of its own for that part — it's the main item on the pending roadmap. What does have its own backend is the sampling points' coordinates, served from Cloudflare D1 via a Worker (same pattern as the other two portals).

Data origin

The values come from the testing protocols the Municipality of Saladillo publishes as loose PDFs at saladillo.gob.ar/servicios_sanitarios — with no table, index, or consistent file names. The initial load (87 samples) was manual, protocol by protocol. Since August 2026 there's a GitHub Action (protocolos-ingest.yml, triggered manually) that downloads new PDFs and uses the Gemini API to extract structured JSON from each one — the result lands in a staging CSV (extraidos_pendientes.csv) for human review before merging into the dashboard, never directly.

Existing API (partial)

Endpoint	Description
GET /api/coords	Sampling point coordinates — public, read-only
POST /api/coords	Edit coordinates — protected with an X-Admin-Key header (401 without the correct key)
GET /tiles/:style/:z/:x/:y{@2x}.png	Map tile proxy to CARTO Basemaps

Base URL: https://api.lemeit.ar/wq (public domain shared with the other environmental-network projects, via a Cloudflare Route — same scheme as api.lemeit.ar/aq and api.lemeit.ar/emas; the original *.workers.dev — agua-saladillo-api...workers.dev — still works the same as a direct fallback, without the /wq prefix). app.lemeit.ar/wq serves the static dashboard, not the API (the old wq.lemeit.ar just redirects there).

Usage example

curl "https://api.lemeit.ar/wq/api/coords"

The samples (RAW) and regulatory limits (LIM) don't have an API yet — today the only way to access them is by reading the JS object embedded in the dashboard's index.html; there's no separate endpoint to request them.

A note on Arsenic

It's the only parameter with a real discrepancy between regulations: the Argentine Food Code sets 0.01 mg/L (adopted from the WHO) while the current text of Provincial Law 11,820 (Annex A) still says 0.05 mg/L, never updated — although in practice the Province follows the WHO/CAA value, which is also what the municipal protocols themselves cite. The dashboard shows both limits instead of picking one, to make the gap between the written rule and actual practice visible.

Pending roadmap

• Own backend for RAW/LIM (Cloudflare D1 + Worker), following the same pattern already used by lemeit-emas and lemeit-aq — the step that would enable a public data API just like the other two portals, and let automatic ingestion write straight to the database instead of to a staging CSV.

See the project log (Spanish only) for more context on harmonizing the three portals.