Locus Drinking Water Violations

{
  "caveats": [
    "Point-in-polygon containment identifies a candidate utility or published provider boundary, not proof of an active account or connection. Confirm with the utility; a water bill names the actual provider."
  ],
  "componentStatus": [
    {
      "component": "sdwis_violation_enforcement",
      "status": "ok"
    }
  ],
  "note": "Awareness/diagnostic only. Full briefs are x402-paid. Agents can discover live free tools at https://api.locus.report/tools/list and paid tools, prices, and manifests at https://api.locus.report/.well-known/ai-tool/index.json.",
  "ok": true,
  "place": {
    "county": "Wake County",
    "countyFips3": "183",
    "stateAbbr": "NC"
  },
  "point": {
    "latitude": 35.780418000003195,
    "longitude": -78.63910200000142
  },
  "provenance": {
    "coverage": "United States public water systems where SDWIS publishes violation/enforcement rows",
    "serviceUrl": "https://data.epa.gov/efservice/SDW_VIOL_ENFORCEMENT",
    "source": "EPA SDWIS / ECHO Safe Drinking Water Act violation and enforcement records",
    "sourcePage": "https://echo.epa.gov/tools/data-downloads/sdwa-download-summary"
  },
  "query": {
    "pwsids": [
      "NC0392010"
    ]
  },
  "serviceAreaMatched": true,
  "serviceAreaResolution": {
    "caveats": [
      "Point-in-polygon containment identifies a candidate utility or published provider boundary, not proof of an active account or connection. Confirm with the utility; a water bill names the actual provider."
    ],
    "multipleMatches": false,
    "point": {
      "latitude": 35.780418000003195,
      "longitude": -78.63910200000142
    },
    "source": {
      "fetchedAt": "2026-09-23T01:11:19.075Z",
      "layerUrl": "https://services.arcgis.com/cJ9YHowT8TU7DUyn/arcgis/rest/services/Water_System_Boundaries/FeatureServer/0",
      "name": "EPA Community Water System Service Area Boundaries (EPA Office of Research and Development)",
      "sourcePage": "https://www.epa.gov/ground-water-and-drinking-water/public-water-system-service-areas"
    },
    "status": "matched",
    "systems": [
      {
        "boundary": {
          "basis": "provider_supplied",
          "confidence": "high",
          "confidenceNote": "Provider-supplied boundary marked Verified in the EPA layer.",
          "dataProvider": "NC Center for Geographic Information and Analysis",
          "dataProviderType": "State Agency",
          "verification": "verified",
          "verificationStatus": "Verified"
        },
        "name": "RALEIGH, CITY OF",
        "populationServed": 640000,
        "primacyAgency": "NC",
        "pwsid": "NC0392010",
        "serviceAreaType": "Municipality",
        "serviceConnections": 200114
      }
    ]
  },
  "systemsBasis": "service_area_boundary",
  "systemsChecked": [
    {
      "pwsid": "NC0392010"
    }
  ],
  "systemsQueried": 1,
  "systemsRetrieved": 1,
  "verifyNext": [
    {
      "step": "Confirm the serving utility directly (a water bill names it); service-area boundary containment does not prove an active account or connection.",
      "url": "https://www.epa.gov/ground-water-and-drinking-water/public-water-system-service-areas"
    }
  ],
  "violations": [
    {
      "compliancePeriod": {
        "begin": "2006-01-01",
        "end": "2006-01-31"
      },
      "contaminantCode": "3100",
      "contaminantName": "Coliform (TCR)",
      "enforcementAction": "SOX",
      "enforcementActionName": "St Compliance achieved",
      "enforcementDate": "2010-09-01",
      "officialUrl": "https://echo.epa.gov/detailed-facility-report?fid=NC0392010",
      "pwsid": "NC0392010",
      "systemName": "RALEIGH, CITY OF",
      "violationCategory": "Monitoring and Reporting",
      "violationCode": "24",
      "violationId": "3285707",
      "violationName": "Monitoring, Routine Minor (TCR)"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.locus.report/api/locus-drinking-water-violations' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"1 E Edenton St, Raleigh, NC 27601"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.locus.report/api/locus-drinking-water-violations' \
  -H 'content-type: application/json' \
  --data-raw '{"address":"1 E Edenton St, Raleigh, NC 27601"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.locus.report%2Fapi%2Flocus-drinking-water-violations&method=POST
const res = await pay("https://api.locus.report/api/locus-drinking-water-violations", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "address": "1 E Edenton St, Raleigh, NC 27601"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.locus.report/api/locus-drinking-water-violations",
        json={
            "address": "1 E Edenton St, Raleigh, NC 27601",
        },
    )
    print(res.status_code, res.text)