{
  "type": "water",
  "pwsid": "OH0200412",
  "name": "Delphos City",
  "county": "Allen",
  "population": 7101,
  "producer": true,
  "source_class": "river",
  "label": "Little Auglaize River, stored in city reservoir",
  "bodies": [
    "Little Auglaize River"
  ],
  "intakes": [
    "Little Auglaize River",
    "Reservoir"
  ],
  "wells": 0,
  "aquifer": "",
  "notes": "Could not find an independent CCR/city-website confirmation beyond the SDWIS intake names; kept the SDWIS hypothesis (river water impounded in an on-site reservoir, no wells or purchases).",
  "urls": [
    "https://en.wikipedia.org/wiki/Little_Auglaize_River",
    "https://vanwert.org/water-treatment/"
  ],
  "chain": [
    "OH0200412"
  ],
  "plants": [
    {
      "n": "Delphos Water Treatment Plant",
      "a": "Delphos, OH",
      "la": 40.8412,
      "lo": -84.3388,
      "pt": "approximate",
      "wb": "Little Auglaize River",
      "src": "Little Auglaize River, stored in city reservoir",
      "cls": "river",
      "in": [
        {
          "n": "Little Auglaize River intake",
          "wb": "Little Auglaize River",
          "role": "primary",
          "src": "River pump station that supplies the Delphos-Gillmor Reservoir northwest of the city",
          "la": 40.86,
          "lo": -84.38,
          "pt": "approximate"
        },
        {
          "n": "Delphos-Gillmor Reservoir",
          "wb": "Delphos-Gillmor Reservoir (off-stream, ~30 acres)",
          "role": "storage",
          "src": "Upground reservoir on Shenk Road northwest of Delphos, in Van Wert County, holding water pumped from the Little Auglaize River for treatment",
          "la": 40.86,
          "lo": -84.38,
          "pt": "approximate"
        }
      ]
    }
  ],
  "facts": {
    "hist": [
      [
        "2005",
        "The city began a wastewater treatment improvement project to handle its unusually high industrial organic loadings, improve effluent quality discharged to Jennings Creek, and meet coming Total…"
      ],
      [
        "2006",
        "The new wastewater plant came online — at the time the largest flat plate membrane bioreactor facility in the world, and the only membrane treatment facility operating with an Autothermal…"
      ],
      [
        "2025",
        "Ohio EPA issued the Delphos Water Plant a warning for failure to meet the requirements for service line notifications; the city posted a lead service line replacement program policy and a service…"
      ],
      [
        "2026",
        "Council authorized a run of wastewater headworks work: new screens from SAVECO North America installed by Peterson Construction (O2026-11, O2026-18, O2026-21), a COG bar screen from Du Peron…"
      ]
    ],
    "treat": "The Delphos Water System takes its raw water from the Little Auglaize River via the Delphos Gilmore Reservoir northwest of the city — the river is impounded first rather than pumped straight to the plant, and the reservoir has its own chapter in the codified ordinances (Chapter 931, Delphos-Gillmor…",
    "press": "Not published. Neither the 2025 consumer confidence report nor the Water Department page gives a distribution system pressure figure.",
    "rate": {
      "g": null,
      "n": "Not published online. Delphos bills water and sewer through Muni-Link with payment via AuthorityPay, and the city's Documents & Forms library has a dedicated 'Water Sewer'…",
      "m": null
    },
    "imp": [
      [
        "Total trihalomethanes (TTHM)",
        "62.00",
        "ppb",
        "80 (MCL)",
        "2025",
        "Range 42.80-93.9 ppb — individual results ran above the 80 ppb MCL, though the running annual average stayed compliant…"
      ],
      [
        "Nitrate",
        "5.71",
        "ppm",
        "10 (MCL)",
        "2025",
        "Range 1.91-5.71 ppm, over half the MCL. Runoff from fertilizer use, leaching from septic tanks and sewage, erosion of…"
      ],
      [
        "HAA5 (haloacetic acids)",
        "18.53",
        "ppb",
        "60 (MCL)",
        "2025",
        "Range 14.7-20.8 ppb."
      ],
      [
        "Total chlorine",
        "1.77",
        "ppm",
        "4 (MRDL)",
        "2025",
        "Range 1.34-2.16 ppm."
      ],
      [
        "Fluoride",
        "1.09",
        "ppm",
        "4.0 (MCL)",
        "2025",
        ""
      ],
      [
        "Atrazine",
        "0.41",
        "ppb",
        "3 (MCL)",
        "2025",
        "Range 0.33-0.55 ppb — detected in every sample, not just occasionally. Runoff from herbicide used on row crops."
      ],
      [
        "Total organic carbon (TOC)",
        "2.4",
        "removal…",
        "Treatment…",
        "2025",
        "Range 1.9-3.7. TOC has no direct health effect but is the feedstock for trihalomethane and haloacetic acid formation…"
      ],
      [
        "Turbidity",
        "0.15",
        "NTU…",
        "Treatment…",
        "2025",
        "Range 0.04-0.15 NTU; 100% of monthly samples met the turbidity limits."
      ],
      [
        "Lead",
        "0",
        "ppb",
        "15 (action…",
        "2025",
        "20 samples taken 9 July and 23 July 2025; 0 exceeded the action level, range 0 to 0."
      ],
      [
        "Copper",
        "0",
        "ppm",
        "1.3 (action…",
        "2025",
        "Range 0-0.053 ppm; 0 of 20 samples over the action level."
      ]
    ],
    "proj": [
      [
        "Wastewater treatment plant replacement (membrane bioreactor facility)",
        null,
        "2005-2006",
        "completed",
        "Begun 2005, online 2006. Designed for the organic loading of a community of 70,000 despite a population near 7,000, with a 12 MGD design peak flow. The largest…"
      ],
      [
        "Storm holding pond expansion",
        null,
        "2005-2006",
        "completed",
        "Enlarged an existing pond to bring the city's storm holding capacity to 12 million gallons, part of the same wastewater project. Cost not published."
      ],
      [
        "Project No. 2025-100 S. Main Street Storm Sewer Project",
        null,
        "2025",
        "under construction",
        "New storm sewer running from W. Clime Street, begun 15 August 2025 and listed 'In Progress' on the city's projects page as of September 2026. Cost not…"
      ],
      [
        "Wastewater plant headworks screen replacement",
        null,
        "2026",
        "under construction",
        "Screens purchased from SAVECO North America (O2026-11, amended by O2026-18) with removal and installation by Peterson Construction (O2026-21). Costs are in the…"
      ],
      [
        "Wastewater plant COG (bar) screen",
        null,
        "2026",
        "under construction",
        "Screen purchased from Du Peron Corporation (O2026-22) and installed by Peterson Construction (O2026-23). Cost not published on the ordinance index."
      ],
      [
        "7th Street lift station repair and renovation",
        null,
        "2026",
        "under construction",
        "Contract with All Purpose Contracting, Inc. (O2026-24). Cost not published on the ordinance index."
      ],
      [
        "Sewer inspection trailer and camera",
        null,
        "2026",
        "completed",
        "Purchase of a 2023 Envirosight inspection trailer and sewer camera from Best Equipment Company (O2026-25). Cost not published on the ordinance index."
      ]
    ],
    "plan": [
      [
        "Lead service line replacement program",
        null,
        "",
        "planned",
        "The city adopted a lead service line replacement program policy and published a service line inventory survey after Ohio EPA warned it in 2025 for failure to…"
      ]
    ],
    "stress": "Not documented as quantity-stressed. Delphos banks Little Auglaize River water in the Delphos Gilmore Reservoir rather than pumping the river directly, which buffers it against low flow, and it maintains a published Surface Water Assessment Plan. The visible pressure is on quality, and it is the classic farm-country surface water…",
    "sew": {
      "s": "A 2006 membrane bioreactor plant discharging to Jennings Creek, built from 2005 to treat industrial organic loadings equivalent to a community of 70,000 in a city of about 7,000. Average dry weather flow is roughly 1.5 MGD; design peak flow is 12 MGD. Wastewater enters an influent pump station on the old plant site through a 48-inch and…",
      "st": "Delphos runs a combined sewer system, so storm flow goes to the wastewater plant rather than to a separate outfall network — when it rains the plant sees flows in excess of eight times the 1.5 MGD dry weather average, which is why it was built for a 12 MGD…"
    },
    "fun": [
      "When it opened in 2006, Delphos's sewage plant was the largest flat plate membrane bioreactor facility in the world — and the only membrane plant anywhere running Autothermal Thermophilic Aerobic Digestion on its solids.",
      "A town of about 7,000 people built a wastewater plant sized for the organic load of 70,000, because its industries put out that much.",
      "The plant's solids are cooked by their own bacteria: the ATAD reactors hold about 140°F with no external heat, producing a Class A biosolid that gets pressed to roughly 22% solids and spread in city parks or handed to…",
      "There are 52,000 individual membrane plates in the bioreactor, stacked into 130 double units across five trains — and in a storm the fifth train stops thickening sludge and starts treating sewage.",
      "The reservoir has its own chapter of city law: Chapter 931 of the Delphos codified ordinances is the Delphos-Gillmor Reservoir."
    ],
    "src": {
      "history": [
        "https://www.cityofdelphos.com/sites/default/files/2024-06/wastewater-overview.pdf",
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://www.cityofdelphos.com/2026-ordinances"
      ],
      "treatment": [
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://codelibrary.amlegal.com/codes/delphos/latest/delphos_oh/0-0-0-11058"
      ],
      "pressure": [
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://www.cityofdelphos.com/water-department"
      ],
      "rates": [
        "https://www.cityofdelphos.com/documents-forms?field_wp_doc_form_categories_target_id=18",
        "https://codelibrary.amlegal.com/codes/delphos/latest/delphos_oh/0-0-0-11058"
      ],
      "impurities": [
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://www.cityofdelphos.com/water-department"
      ],
      "projects": [
        "https://www.cityofdelphos.com/projects",
        "https://www.cityofdelphos.com/2026-ordinances",
        "https://www.cityofdelphos.com/sites/default/files/2024-06/wastewater-overview.pdf"
      ],
      "planned": [
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://www.cityofdelphos.com/water-department"
      ],
      "water_stress": [
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://www.cityofdelphos.com/water-department"
      ],
      "sewer": [
        "https://www.cityofdelphos.com/sites/default/files/2024-06/wastewater-overview.pdf",
        "https://www.cityofdelphos.com/wastewater-plant",
        "https://www.cityofdelphos.com/projects"
      ],
      "fun_facts": [
        "https://www.cityofdelphos.com/sites/default/files/2024-06/wastewater-overview.pdf",
        "https://www.cityofdelphos.com/sites/default/files/2026-05/2025-ccr.pdf",
        "https://codelibrary.amlegal.com/codes/delphos/latest/delphos_oh/0-0-0-11058"
      ]
    }
  },
  "zips_served": [
    {
      "zip": "45833",
      "share": 0.6368,
      "dominant": true
    }
  ],
  "photo": {
    "url": "/photos/OH0200412.jpg",
    "caption": "U.S. Route 30 crossing the Little Auglaize River, Delphos's water source",
    "credit": "Chris Light",
    "license": "CC BY-SA 4.0"
  },
  "url": "https://crackedbuckeye.com/water/OH0200412/",
  "api": "https://crackedbuckeye.com/api/water/OH0200412.json",
  "generated": "2026-09-16",
  "license": "CC BY 4.0 for the compilation; each source keeps its own terms",
  "cite": "Cracked Buckeye (Open Shower Co), \"Delphos City · OH0200412\", https://crackedbuckeye.com/water/OH0200412/, built 2026-09-16, accessed [date].",
  "schema": "https://crackedbuckeye.com/api/schema.json"
}