Numeric environmental limits and guidelines held for Minnesota: 1 instrument of its own and 66 instruments of the places above it, every row cited to its source. Each parameter opens its rows, with what was searched.
Ask your AI assistant and get the cite back: add Passage Data to Claude, ChatGPT, Cursor, VS Code or Microsoft 365 Copilot. Free, no key.
The address to add: https://passage-data.com/mcp
Claude: Customize → Connectors → + Add → Add custom connector; paste the address; choose No sign in. The Free plan holds one custom connector.
ChatGPT (Plus, Pro, Business, Enterprise, Edu, on the web): Settings → Apps → Advanced settings → turn on Developer mode; then Create app, paste the address, no authentication.
Cursor: Add to Cursor(opens Cursor, which asks you to confirm)
VS Code (GitHub Copilot agent mode): Add to VS Code(opens VS Code, which asks you to confirm). On a work account (Copilot Business or Enterprise), your admin decides which MCP servers run; if this one doesn't, ask them to allow https://passage-data.com/mcp.
Microsoft 365 Copilot: someone in your IT who builds agents adds the address in Copilot Studio (the agent's Tools → Add a tool → New tool → Model Context Protocol; authentication None), then publishes the agent to Teams and Microsoft 365 Copilot.
Claude Code: claude mcp add --transport http passage-data https://passage-data.com/mcp
Then ask it, for example: “Which environmental limits apply in Minnesota? Cite each one.”
40 CFR Part 133 — Secondary Treatment Regulation · eCFR as of 2026-10-05 · United States (US) · 19 rows · source
40 CFR Part 405 — PART 405—DAIRY PRODUCTS PROCESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 179 rows · source
40 CFR Part 406 — PART 406—GRAIN MILLS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 73 rows · source
40 CFR Part 407 — PART 407—CANNED AND PRESERVED FRUITS AND VEGETABLES PROCESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 53 rows · source
40 CFR Part 408 — PART 408—CANNED AND PRESERVED SEAFOOD PROCESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 366 rows · source
40 CFR Part 409 — PART 409—SUGAR PROCESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 47 rows · source
40 CFR Part 410 — PART 410—TEXTILE MILLS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 382 rows · source
40 CFR Part 411 — PART 411—CEMENT MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 8 rows · source
40 CFR Part 412 — PART 412—CONCENTRATED ANIMAL FEEDING OPERATIONS (CAFO) POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 4 rows · source
40 CFR Part 413 — PART 413—ELECTROPLATING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 349 rows · source
40 CFR Part 414 — PART 414—ORGANIC CHEMICALS, PLASTICS, AND SYNTHETIC FIBERS · eCFR as of 2026-08-01 · United States (US) · 640 rows · source
40 CFR Part 415 — PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-08-01 · United States (US) · 489 rows · source
40 CFR Part 417 — PART 417—SOAP AND DETERGENT MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 655 rows · source
40 CFR Part 418 — PART 418—FERTILIZER MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-08-01 · United States (US) · 110 rows · source
40 CFR Part 419 — PART 419—PETROLEUM REFINING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 607 rows · source
40 CFR Part 420 — PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 1,735 rows · source
40 CFR Part 421 — PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 10,099 rows · source
40 CFR Part 422 — PART 422—PHOSPHATE MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-08-01 · United States (US) · 93 rows · source
40 CFR Part 423 — PART 423—STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 206 rows · source
40 CFR Part 424 — PART 424—FERROALLOY MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 122 rows · source
40 CFR Part 425 — PART 425—LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 189 rows · source
40 CFR Part 426 — PART 426—GLASS MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 152 rows · source
40 CFR Part 427 — PART 427—ASBESTOS MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 46 rows · source
40 CFR Part 428 — PART 428—RUBBER MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 248 rows · source
40 CFR Part 429 — PART 429—TIMBER PRODUCTS PROCESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 54 rows · source
40 CFR Part 430 — PART 430—THE PULP, PAPER, AND PAPERBOARD POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 983 rows · source
40 CFR Part 432 — PART 432—MEAT AND POULTRY PRODUCTS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 210 rows · source
40 CFR Part 433 — PART 433—METAL FINISHING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 103 rows · source
40 CFR Part 434 — PART 434—COAL MINING POINT SOURCE CATEGORY BPT, BAT, BCT LIMITATIONS AND NEW SOURCE PERFORMANCE STANDARDS · eCFR as of 2026-10-05 · United States (US) · 91 rows · source
40 CFR Part 435 — PART 435—OIL AND GAS EXTRACTION POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 6 rows · source
40 CFR Part 436 — PART 436—MINERAL MINING AND PROCESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 25 rows · source
40 CFR Part 437 — PART 437—THE CENTRALIZED WASTE TREATMENT POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 893 rows · source
40 CFR Part 438 — PART 438—METAL PRODUCTS AND MACHINERY POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 2 rows · source
40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 232 rows · source
40 CFR Part 440 — PART 440—ORE MINING AND DRESSING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 400 rows · source
40 CFR Part 442 — PART 442—TRANSPORTATION EQUIPMENT CLEANING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 55 rows · source
40 CFR Part 443 — PART 443—EFFLUENT LIMITATIONS GUIDELINES FOR EXISTING SOURCES AND STANDARDS OF PERFORMANCE AND PRETREATMENT STANDARDS FOR NEW SOURCES FOR THE PAVING AND ROOFING MATERIALS (TARS AND ASPHALT) POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 33 rows · source
40 CFR Part 444 — PART 444—WASTE COMBUSTORS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 39 rows · source
40 CFR Part 445 — PART 445—LANDFILLS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 44 rows · source
40 CFR Part 446 — PART 446—PAINT FORMULATING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 0 rows · source
40 CFR Part 447 — PART 447—INK FORMULATING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 0 rows · source
40 CFR Part 449 — PART 449—AIRPORT DEICING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 4 rows · source
40 CFR Part 454 — PART 454—GUM AND WOOD CHEMICALS MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 25 rows · source
40 CFR Part 455 — PART 455—PESTICIDE CHEMICALS · eCFR as of 2026-10-05 · United States (US) · 19 rows · source
40 CFR Part 457 — PART 457—EXPLOSIVES MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 12 rows · source
40 CFR Part 458 — PART 458—CARBON BLACK MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-08-01 · United States (US) · 4 rows · source
40 CFR Part 459 — PART 459—PHOTOGRAPHIC POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 5 rows · source
40 CFR Part 460 — PART 460—HOSPITAL POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 5 rows · source
40 CFR Part 461 — PART 461—BATTERY MANUFACTURING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 1,644 rows · source
40 CFR Part 463 — PART 463—PLASTICS MOLDING AND FORMING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 32 rows · source
40 CFR Part 464 — PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 2,916 rows · source
40 CFR Part 465 — PART 465—COIL COATING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 148 rows · source
40 CFR Part 466 — PART 466—PORCELAIN ENAMELING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 379 rows · source
40 CFR Part 467 — PART 467—ALUMINUM FORMING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 2,018 rows · source
40 CFR Part 468 — PART 468—COPPER FORMING POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 1,155 rows · source
40 CFR Part 469 — PART 469—ELECTRICAL AND ELECTRONIC COMPONENTS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 97 rows · source
40 CFR Part 471 — PART 471—NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY · eCFR as of 2026-10-05 · United States (US) · 6,545 rows · source
40 CFR 52.21 — Prevention of significant deterioration of air quality · eCFR 2026-08-01 (versioner API) · United States (US) · 7 rows · source
40 CFR 63.2 — Definitions (major source of hazardous air pollutants) · eCFR 2026-08-01 (versioner API) · United States (US) · 2 rows · source
Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants · ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017) · Minnesota (US-MN) · 1,394 rows · source
40 CFR Part 50, National Primary and Secondary Ambient Air Quality Standards, §§ 50.4–50.21 (eCFR as of 2026-08-01) · 90 FR 4651, Jan. 16, 2025 · United States (US) · 21 rows · source
40 CFR Part 141 — National Primary Drinking Water Regulations (eCFR, as of 2026-08-01) · eCFR as of 2026-08-01 · United States (US) · 161 rows · source
EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC) · EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); each criterion carries its publication year · United States (US) · 156 rows · source
EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only) · EPA web table (fetched 2026-10-09); each criterion carries its publication year · United States (US) · 336 rows · source
40 CFR Part 143 — National Secondary Drinking Water Regulations (eCFR, as of 2026-08-01) · eCFR as of 2026-08-01 · United States (US) · 15 rows · source
US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil · November 2024 · United States (US) · 2,565 rows · source
US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Tap Water · November 2024 · United States (US) · 850 rows · source
Read from public law and public agency files. A row missing here is missing from our sources, not from the law of the place. Check the cited source before relying on a value.