{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/epa/refs/heads/main/json-structure/echo-dfr-dfr071-structure.json",
  "name": "dfr071",
  "description": "Copper Samples",
  "type": "object",
  "properties": {
    "CU90": {
      "type": "string",
      "description": "The concentration of copper representing the 90th percentile level of all tap water samples collected for the water system",
      "example": "2 mg/L"
    },
    "CU90Dates": {
      "type": "string",
      "description": "The dates during which tap water samples were collected.",
      "example": "2015-07-01-2015-12-31"
    },
    "CU90Units": {
      "type": "string",
      "description": "The measurement units.",
      "example": "mg/L"
    },
    "CU90Value": {
      "type": "string",
      "description": "The value of the concentration of copper representing the 90th percentile level of all tap water samples collected for the water system",
      "example": "2"
    }
  },
  "required": [
    "CU90",
    "CU90Value",
    "CU90Units",
    "CU90Dates"
  ]
}