# EPA Water Quality Compliance Brief

> EPA Water Quality Compliance Brief is a paid API for AI agents from oracles-production.up.railway.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Returns an LLM-generated compliance digest summarizing the most important EPA drinking water and water quality regulatory changes and deadlines within a given time window.

## Facts

- Endpoint: GET https://oracles-production.up.railway.app/v1/reg-epa-water/brief
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/epa-water-quality-compliance-brief-a0352b27
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NALbx_yfqPN5_SuEppR96

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability epa-water-quality-compliance-brief-a0352b27
```

Example prompt: Give me a compliance brief on EPA drinking water and water quality regulations from the past 30 days — I need to know which rules actually matter and what deadlines are coming up.

## When to prefer this

Use this endpoint when you need a concise, human-readable compliance summary of EPA water quality rules rather than raw regulatory data. Ideal for compliance officers, legal teams, or automated monitoring workflows that need to quickly surface actionable deadlines and rule changes without parsing full regulatory filings. Prefer over raw EPA data feeds when brevity and LLM-curated relevance matter.

## Known failure modes

- No changes in window: may return a brief with basedOnChanges=0 or minimal content
- Invalid since date format: schema requires ISO 8601 date-time, malformed dates may cause a 400 error
- LLM generation failure: endpoint may fall back to template-based output (generatedBy=template)
- Payment failure: x402 payment of $0.25 USDC required; missing or failed payment returns 402
- Upstream data source unavailable: EPA regulatory data feed may be temporarily unavailable

## How this service works

LLM-written compliance digest of the water quality & drinking water rules in the window that actually matter (drinking water, clean water, water quality, effluent, wastewater) — issuing agency named, deadlines called out.

## Output

An LLM-written plain-language compliance digest covering the handful of water quality and drinking water regulatory changes in the specified window that truly matter, with key deadlines called out explicitly. Also includes metadata: whether it was generated by an LLM or a template, and how many underlying regulatory changes it was based on.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "since": {
       "type": "string",
       "format": "date-time",
       "description": "Window start (default: last 30 days)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "brief": {
       "type": "string"
      },
      "generatedBy": {
       "enum": [
        "llm",
        "template"
       ],
       "type": "string"
      },
      "basedOnChanges": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/epa-water-quality-compliance-brief-a0352b27/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from oracles-production.up.railway.app](https://www.zero.xyz/host/oracles-production.up.railway.app/llms.txt)