{
  "city": "Philadelphia",
  "state": "PA",
  "slug": "philadelphia",
  "hardness_facts": [
    {
      "utility": "Philadelphia Water Department",
      "measure": "Hardness, Baxter plant",
      "value_as_published": "Average 101 ppm (6 grains per gallon), range 72-121 ppm",
      "period": "2025 report year",
      "source_title": "2025 Drinking Water Quality Report – Philadelphia Water Department (Hardness in Tap Water table)",
      "source_url": "https://water.phila.gov/2025-quality"
    },
    {
      "utility": "Philadelphia Water Department",
      "measure": "Hardness, Belmont plant",
      "value_as_published": "Average 151 ppm (9 grains per gallon), range 99-204 ppm",
      "period": "2025 report year",
      "source_title": "2025 Drinking Water Quality Report – Philadelphia Water Department (Hardness in Tap Water table)",
      "source_url": "https://water.phila.gov/2025-quality"
    },
    {
      "utility": "Philadelphia Water Department",
      "measure": "Hardness, Queen Lane plant",
      "value_as_published": "Average 169 ppm (10 grains per gallon), range 119-270 ppm",
      "period": "2025 report year",
      "source_title": "2025 Drinking Water Quality Report – Philadelphia Water Department (Hardness in Tap Water table)",
      "source_url": "https://water.phila.gov/2025-quality"
    }
  ],
  "published_span_mg_per_l": [
    72,
    270
  ],
  "span_converted_from_grains": false,
  "usgs_class": "moderately hard to very hard",
  "usgs_class_source": "https://www.usgs.gov/water-science-school/science/hardness-water",
  "notes": [
    "Baxter draws from the Delaware River. Belmont and Queen Lane draw from the Schuylkill."
  ],
  "local_details": {
    "disinfectant": {
      "text": "Philadelphia Water Department disinfects with chloramine, a combination of chlorine and ammonia.",
      "kind": "chloramine",
      "source_title": "Philadelphia Water Department 2025 water quality report",
      "source_url": "https://water.phila.gov/2025-quality",
      "evidence_ids": [
        "PHILAD-L-01"
      ]
    },
    "source_water": {
      "text": "The Baxter plant draws from the Delaware River, and the Queen Lane and Belmont plants draw from the Schuylkill.",
      "source_title": "Philadelphia Water Department 2025 water quality report",
      "source_url": "https://water.phila.gov/2025-quality",
      "evidence_ids": [
        "PHILAD-L-02"
      ]
    },
    "by_area": {
      "text": "Hardness depends on which treatment plant serves your part of the city, and the department says seasonal changes can affect taste and odor.",
      "source_title": "Philadelphia Water Department 2025 water quality report",
      "source_url": "https://water.phila.gov/2025-quality",
      "evidence_ids": [
        "PHILAD-L-03"
      ]
    }
  },
  "sources_checked_on": "2026-10-27",
  "site": "https://philadelphiawatersystems.com/",
  "brand": "Philadelphia Water Systems by My Home Water System",
  "taking_requests": true
}