{
 "schema": "galena.check-water-ontario/1",
 "id": "ontario",
 "kind": "provincial",
 "unit": "micrograms per litre",
 "data_end": "2025-03-31",
 "systems": {
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   "city": "barrie",
   "periods": {
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     "n": 10,
     "first": "2023-07-05",
     "last": "2023-07-07",
     "start": "2023-06-15",
     "end": "2023-10-15",
     "complete": true,
     "median": 0.6,
     "p90": 2.6,
     "max": 6.4,
     "over_5": 1,
     "share_over_5": 0.1,
     "share_over_5_95": [
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     "over_10": 0,
     "below_detection": 1,
     "detection_limit": 0.1,
     "distribution": {
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      "max": 0.2,
      "over_10": 0
     }
    },
    "winter 2023-2024": {
     "n": 10,
     "first": "2024-01-10",
     "last": "2024-01-12",
     "start": "2023-12-15",
     "end": "2024-04-15",
     "complete": true,
     "median": 0.4,
     "p90": 1.4,
     "max": 1.7,
     "over_5": 0,
     "share_over_5": 0.0,
     "share_over_5_95": [
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     ],
     "over_10": 0,
     "below_detection": 0,
     "detection_limit": null,
     "distribution": {
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     }
    },
    "summer 2024": {
     "n": 10,
     "first": "2024-07-09",
     "last": "2024-07-11",
     "start": "2024-06-15",
     "end": "2024-10-15",
     "complete": true,
     "median": 0.6,
     "p90": 1.0,
     "max": 1.5,
     "over_5": 0,
     "share_over_5": 0.0,
     "share_over_5_95": [
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     ],
     "over_10": 0,
     "below_detection": 0,
     "detection_limit": null,
     "distribution": {
      "n": 10,
      "max": 0.1,
      "over_10": 0
     }
    }
   },
   "latest_complete": "summer 2024"
  },
  "260001458": {
   "city": "kitchener",
   "periods": {
    "outside the regulation periods": {
     "n": 6,
     "first": "2023-06-09",
     "last": "2023-12-14",
     "start": null,
     "end": null,
     "complete": false,
     "median": 0.232,
     "p90": 12.8,
     "max": 12.8,
     "over_5": 2,
     "share_over_5": 0.3333,
     "share_over_5_95": [
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      0.7
     ],
     "over_10": 1,
     "below_detection": 2,
     "detection_limit": 0.2,
     "distribution": {
      "n": 0,
      "max": null,
      "over_10": 0
     }
    },
    "summer 2023": {
     "n": 118,
     "first": "2023-09-01",
     "last": "2023-09-29",
     "start": "2023-06-15",
     "end": "2023-10-15",
     "complete": true,
     "median": 0.481,
     "p90": 1.67,
     "max": 14.7,
     "over_5": 5,
     "share_over_5": 0.0424,
     "share_over_5_95": [
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      0.0954
     ],
     "over_10": 2,
     "below_detection": 20,
     "detection_limit": 0.2,
     "distribution": {
      "n": 11,
      "max": 0.424,
      "over_10": 0
     }
    },
    "winter 2023-2024": {
     "n": 122,
     "first": "2024-02-29",
     "last": "2024-04-12",
     "start": "2023-12-15",
     "end": "2024-04-15",
     "complete": true,
     "median": 0.536,
     "p90": 5.35,
     "max": 13.0,
     "over_5": 13,
     "share_over_5": 0.1066,
     "share_over_5_95": [
      0.0633,
      0.1738
     ],
     "over_10": 3,
     "below_detection": 17,
     "detection_limit": 0.2,
     "distribution": {
      "n": 11,
      "max": 0.479,
      "over_10": 0
     }
    },
    "summer 2024": {
     "n": 112,
     "first": "2024-09-10",
     "last": "2024-10-03",
     "start": "2024-06-15",
     "end": "2024-10-15",
     "complete": true,
     "median": 0.578,
     "p90": 1.86,
     "max": 9.88,
     "over_5": 1,
     "share_over_5": 0.0089,
     "share_over_5_95": [
      0.0016,
      0.0488
     ],
     "over_10": 0,
     "below_detection": 5,
     "detection_limit": 0.2,
     "distribution": {
      "n": 10,
      "max": 0.727,
      "over_10": 0
     }
    },
    "winter 2024-2025": {
     "n": 92,
     "first": "2025-03-11",
     "last": "2025-03-28",
     "start": "2024-12-15",
     "end": "2025-04-15",
     "complete": false,
     "median": 0.305,
     "p90": 1.14,
     "max": 26.9,
     "over_5": 3,
     "share_over_5": 0.0326,
     "share_over_5_95": [
      0.0112,
      0.0915
     ],
     "over_10": 2,
     "below_detection": 23,
     "detection_limit": 0.2,
     "distribution": {
      "n": 11,
      "max": 2.85,
      "over_10": 0
     }
    }
   },
   "latest_complete": "summer 2024"
  },
  "260002473": {
   "city": "waterloo",
   "periods": {
    "winter 2022-2023": {
     "n": 2,
     "first": "2023-04-13",
     "last": "2023-04-13",
     "start": "2022-12-15",
     "end": "2023-04-15",
     "complete": true,
     "median": 2.52,
     "p90": 3.05,
     "max": 3.05,
     "over_5": 0,
     "share_over_5": 0.0,
     "share_over_5_95": [
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     ],
     "over_10": 0,
     "below_detection": 0,
     "detection_limit": null,
     "distribution": {
      "n": 1,
      "max": 0.2,
      "over_10": 0
     }
    },
    "summer 2023": {
     "n": 121,
     "first": "2023-08-08",
     "last": "2023-10-11",
     "start": "2023-06-15",
     "end": "2023-10-15",
     "complete": true,
     "median": 1.11,
     "p90": 4.19,
     "max": 11.7,
     "over_5": 10,
     "share_over_5": 0.0826,
     "share_over_5_95": [
      0.0455,
      0.1455
     ],
     "over_10": 1,
     "below_detection": 1,
     "detection_limit": 0.2,
     "distribution": {
      "n": 110,
      "max": 15.8,
      "over_10": 3
     }
    },
    "winter 2023-2024": {
     "n": 122,
     "first": "2024-02-15",
     "last": "2024-04-12",
     "start": "2023-12-15",
     "end": "2024-04-15",
     "complete": true,
     "median": 0.794,
     "p90": 2.83,
     "max": 9.37,
     "over_5": 5,
     "share_over_5": 0.041,
     "share_over_5_95": [
      0.0176,
      0.0924
     ],
     "over_10": 0,
     "below_detection": 6,
     "detection_limit": 0.2,
     "distribution": {
      "n": 76,
      "max": 20.3,
      "over_10": 1
     }
    },
    "summer 2024": {
     "n": 112,
     "first": "2024-08-12",
     "last": "2024-09-27",
     "start": "2024-06-15",
     "end": "2024-10-15",
     "complete": true,
     "median": 0.991,
     "p90": 3.93,
     "max": 7.79,
     "over_5": 10,
     "share_over_5": 0.0893,
     "share_over_5_95": [
      0.0492,
      0.1566
     ],
     "over_10": 0,
     "below_detection": 4,
     "detection_limit": 0.2,
     "distribution": {
      "n": 74,
      "max": 20.0,
      "over_10": 2
     }
    },
    "winter 2024-2025": {
     "n": 112,
     "first": "2025-02-03",
     "last": "2025-03-18",
     "start": "2024-12-15",
     "end": "2025-04-15",
     "complete": false,
     "median": 0.943,
     "p90": 3.57,
     "max": 8.76,
     "over_5": 5,
     "share_over_5": 0.0446,
     "share_over_5_95": [
      0.0192,
      0.1003
     ],
     "over_10": 0,
     "below_detection": 10,
     "detection_limit": 0.2,
     "distribution": {
      "n": 66,
      "max": 6.06,
      "over_10": 0
     }
    }
   },
   "latest_complete": "summer 2024"
  }
 },
 "source": {
  "publisher": "Ontario Ministry of the Environment, Conservation and Parks",
  "dataset": "Drinking Water Quality and Enforcement, test results",
  "url": "https://data.ontario.ca/dataset/drinking-water-quality-and-enforcement",
  "licence": "Contains information licensed under the Open Government Licence – Ontario.",
  "licence_url": "https://www.ontario.ca/page/open-government-licence-ontario",
  "retrieved": "2026-11-03",
  "packages": {
   "2023-24": {
    "url": "https://files.ontario.ca/moe_mapping/downloads/2Water/DWMD/DW_2023-24-EN.zip",
    "sha256": "41e0a9f082bbaa103097a67a3939e799146575e227ff01672d6e68f95d6d840d"
   },
   "2024-25": {
    "url": "https://files.ontario.ca/moe_mapping/downloads/2Water/DWMD/DW_2024-25-EN.zip",
    "sha256": "c4f38de40f7a20f06c04250034c0bdcb45d1622f4135bebff87e2d10e8a5d862"
   }
  }
 },
 "method": "Lead in plumbing samples taken under O. Reg. 170/03 Schedule 15.1: plumbing connected or suspected to be connected to lead service pipes, or lead plumbing; the tap flushed 5 minutes, left 30 to 35 minutes, then two one-litre samples, both tested. Each row is one tested litre. Periods are the Schedule's December 15 to April 15 and June 15 to October 15. The data year ends March 31, so a winter period can be incomplete.",
 "generated": "2026-11-03T13:53:25Z",
 "code": "edabb493"
}