{
  "city": "Allentown",
  "state": "PA",
  "slug": "allentown",
  "hardness_facts": [
    {
      "utility": "Lehigh County Authority",
      "measure": "Total hardness",
      "value_as_published": "Average 15.0 grains per gallon, range 10.5-16.6 grains per gallon",
      "period": "Calendar year 2025",
      "source_title": "Allentown Division, PWSID: 3390024, Annual Water Quality Report for 2025",
      "source_url": "https://lcawaterworks.org/wp-content/uploads/ALD.pdf"
    }
  ],
  "published_span_mg_per_l": [
    180,
    284
  ],
  "span_converted_from_grains": true,
  "usgs_class": "hard to very hard",
  "usgs_class_source": "https://www.usgs.gov/water-science-school/science/hardness-water",
  "notes": [
    "An undated Lehigh County Authority web page gives 13 grains per gallon for the Allentown Division, lower than the average in its 2025 report."
  ],
  "local_details": {
    "disinfectant": {
      "text": "Lehigh County Authority uses chlorine as its main disinfectant in Allentown.",
      "kind": "chlorine",
      "source_title": "Lehigh County Authority, Allentown Division 2025 Water Quality Report",
      "source_url": "https://lcawaterworks.org/wp-content/uploads/ALD.pdf",
      "evidence_ids": [
        "ALLENT-L-01"
      ]
    },
    "source_water": {
      "text": "Allentown water comes from Crystal Spring and Schantz Spring plus the Little Lehigh Creek and the Lehigh River.",
      "source_title": "Lehigh County Authority, Allentown Division 2025 Water Quality Report",
      "source_url": "https://lcawaterworks.org/wp-content/uploads/ALD.pdf",
      "evidence_ids": [
        "ALLENT-L-02"
      ]
    }
  },
  "sources_checked_on": "2026-10-27",
  "site": "https://allentownwatersystems.com/",
  "brand": "Allentown Water Systems by My Home Water System",
  "taking_requests": false
}