{
  "dataset": "private-well-statistics-by-state",
  "version": "2026-07-23",
  "publisher": "Lakeland Well Pump Repair Research",
  "url": "https://lakelandwellpumprepair.com/research/private-well-statistics-by-state/",
  "national_evidence": {
    "model_2020_hu": 20494449,
    "model_2020_people": "45.8 million",
    "epa_households": "more than 23 million",
    "epa_people": "over 43 million (around 15%)",
    "usgs_2015_people": 42451100,
    "usgs_2015_withdrawals_mgald": 3254.95,
    "syndwell_records": 5982715,
    "usgwd_records": 14260752
  },
  "source_conflicts": [
    {
      "topic": "2020 share",
      "source_a": "abstract 14.1%",
      "source_b": "detailed Results 14.6%",
      "treatment": "Use 14.6% and 20494449 as arithmetically consistent"
    },
    {
      "topic": "Per-person use 2015",
      "source_a": "OFR 2017-1131 Utah 220",
      "source_b": "Revised v2.0 Utah 169 Nevada 186",
      "treatment": "Use revised v2.0"
    }
  ],
  "validation": {
    "state_sum_2020": 20494449,
    "paper_total_2020": 20494449,
    "match": true,
    "state_sum_2015_people": 42451100,
    "fl_county_sum_2015_people": 2460295,
    "fl_county_sum_2015_wd": 176.92
  }
}