{
  "city": "Minneapolis",
  "state": "MN",
  "slug": "minneapolis",
  "hardness_facts": [
    {
      "utility": "Minneapolis Water Treatment and Distribution",
      "measure": "Total hardness, plant effluent",
      "value_as_published": "Average 94 ppm, range 80-113 ppm",
      "period": "Calendar year 2025",
      "source_title": "Plant Effluent Water Analysis, Record of data for 2025",
      "source_url": "https://www.minneapolismn.gov/media/-www-content-assets/documents/2025-Record-of-Data-on-new-ltrhead.pdf"
    }
  ],
  "published_span_mg_per_l": [
    80,
    113
  ],
  "span_converted_from_grains": false,
  "usgs_class": "moderately hard",
  "usgs_class_source": "https://www.usgs.gov/water-science-school/science/hardness-water",
  "notes": [
    "Minneapolis lists chloramine in its distribution system."
  ],
  "local_details": {
    "disinfectant": {
      "text": "Minneapolis disinfects with chlorine and lists a chloramine residual in its 2025 water data.",
      "kind": "chloramine",
      "source_title": "Minneapolis 2025 Record of Data",
      "source_url": "https://www.minneapolismn.gov/media/-www-content-assets/documents/2025-Record-of-Data-on-new-ltrhead.pdf",
      "evidence_ids": [
        "MINNEA-L-01"
      ]
    },
    "source_water": {
      "text": "Minneapolis water comes from the Mississippi River.",
      "source_title": "Minneapolis 2025 Consumer Confidence Report",
      "source_url": "https://www.minneapolismn.gov/media/-www-content-assets/documents/2025-CCR-Revised-%282%29.pdf",
      "evidence_ids": [
        "MINNEA-L-02"
      ]
    },
    "softening": {
      "text": "Yes. The city says its treatment removes 65,000 pounds of hardness from the water each day.",
      "source_title": "Minneapolis water treatment and delivery page",
      "source_url": "https://www.minneapolismn.gov/government/departments/public-works/water-treatment-distribution/treatment-delivery/",
      "evidence_ids": [
        "MINNEA-L-03"
      ]
    }
  },
  "sources_checked_on": "2026-10-27",
  "site": "https://minneapoliswatersystems.com/",
  "brand": "Minneapolis Water Systems by My Home Water System",
  "taking_requests": false
}