Generate config/mcl.json from EPA standards

Replace the sample with the real EPA-sourced MCL file. Values in mg/L:
- arsenic 0.01, nitrate(as N) 10, fluoride 4.0, uranium 0.03 (primary)
- chloride 250, sulfate 250, tds 500 (secondary)
pH (6.5-8.5) omitted (a range, not a single MCL). Provenance + EPA
source URLs recorded in the file. Add uranium to the nm_mcl_exceedance
analyte list. Upload this file to gs://<products_bucket>/config/mcl.json.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: jirhiker

orchestration/config/mcl.json

@@ -0,0 +1,12 @@
+{
+  "_comment": "Drinking-water MCLs for the nm_mcl_exceedance product, values in mg/L (matching DIE's normalized analyte units). 'type': primary = enforceable National Primary Drinking Water Regulation (health); secondary = non-mandatory aesthetic SMCL. Sourced from EPA NPDWR and Secondary Drinking Water Standards. Uranium 30 ug/L = 0.030 mg/L. Fluoride uses the primary MCL (4.0); its secondary SMCL is 2.0. pH (6.5-8.5) is a range, not a single MCL, so it is omitted. Upload this file to gs://<products_bucket>/config/mcl.json.",
+  "_source": "https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations ; https://www.epa.gov/sdwa/secondary-drinking-water-standards-guidance-nuisance-chemicals",
+  "_retrieved": "2026-06-28",
+  "arsenic": {"mcl": 0.01, "type": "primary"},
+  "nitrate": {"mcl": 10.0, "type": "primary"},
+  "fluoride": {"mcl": 4.0, "type": "primary"},
+  "uranium": {"mcl": 0.03, "type": "primary"},
+  "chloride": {"mcl": 250.0, "type": "secondary"},
+  "sulfate": {"mcl": 250.0, "type": "secondary"},
+  "tds": {"mcl": 500.0, "type": "secondary"}
+}

orchestration/config/mcl.sample.json

@@ -116,7 +116,7 @@ products:
     title: "NM MCL Exceedances"
     description: "Wells flagged against drinking-water MCLs, all NM sources"
     schedule: "0 15 * * *"
-    analytes: [arsenic, nitrate, fluoride, sulfate, chloride, tds]
+    analytes: [arsenic, nitrate, fluoride, uranium, sulfate, chloride, tds]
     spatial_filter:
       state: NM
     sources: