{
  "type": "water",
  "pwsid": "OH2903512",
  "name": "Greene County - northwest Reg Water",
  "county": "Greene",
  "population": 41895,
  "producer": true,
  "source_class": "groundwater",
  "label": "Little Miami River Buried Valley Aquifer (2 wellfields, Beavercreek area)",
  "bodies": [],
  "intakes": [],
  "wells": 17,
  "aquifer": "Little Miami River Buried Valley Aquifer",
  "notes": "17 active wells across wellfields on Beaver Valley Rd, Shakertown Rd, and Valley Springs Rd, tapping the shallow, high-susceptibility Little Miami buried valley aquifer.",
  "urls": [
    "https://www.greenecountyohio.gov/DocumentCenter/View/34791/CCR-2026-Northwest-Regional-PDF",
    "https://www.greenecountyohio.gov/DocumentCenter/View/33171/CCR-2025-Northwest-Regional-PDF",
    "https://www.greenecountyohio.gov/DocumentCenter/View/30796/-2023-Northwest-Regional-Water-Quality-Report-PDF"
  ],
  "chain": [
    "OH2903512"
  ],
  "plants": [
    {
      "n": "Greene County Northwest Regional Water Treatment Plant (well fields blended supp",
      "a": "1122 Beaver Valley Rd, Beavercreek, OH 45434",
      "la": 39.7075,
      "lo": -84.0825,
      "pt": "plant",
      "wb": "Little Miami River Buried Valley Aquifer",
      "src": "Groundwater wells in three county-owned well fields — Beaver Valley Road, Shakertown Road, and Valley Springs/Hilltop Road — all pumping to and blended at the Northwest Regional Water Treatment Plant on Beaver Valley Rd in Beavercreek",
      "cls": "groundwater",
      "in": [
        {
          "n": "Beaver Valley Road Well Field",
          "wb": "Little Miami River Buried Valley Aquifer (sand and gravel)",
          "role": "primary",
          "src": "Wells off Valley Springs Road near Alpha; Ohio EPA notes the water-bearing gravel starts only about 60 ft down here. (aquifer top ~60 ft)",
          "la": 39.72,
          "lo": -84.0227,
          "pt": "plant"
        },
        {
          "n": "Shakertown Road Well Field",
          "wb": "Little Miami River Buried Valley Aquifer (sand and gravel)",
          "role": "primary",
          "src": "County wells along Shakertown Road west of the plant, in the same buried sand-and-gravel valley; blended at the Beaver Valley plant.",
          "la": 39.7084,
          "lo": -84.0346,
          "pt": "approximate"
        },
        {
          "n": "Hilltop Road Well Field",
          "wb": "Little Miami River Buried Valley Aquifer (sand and gravel)",
          "role": "secondary",
          "src": "New 57-acre wellfield on Hilltop Road near Oldtown (wells HT-13 to HT-15), built to add 3-5 million gallons a day. (3 wells)",
          "la": 39.7408,
          "lo": -83.9452,
          "pt": "approximate",
          "wells": [
            "Greene Co Nwr Water Well Ht-13",
            "Greene Co Nwr Water Well Ht-14",
            "Greene Co Nwr Water Well Ht-15"
          ]
        }
      ]
    }
  ],
  "facts": {
    "hist": [
      [
        "2020",
        "Ohio EPA sampled the Northwest Regional North (Beaver Valley Rd) and South (Shakertown Rd) plants for PFAS on July 27; all six GCSED samples came back non-detect."
      ],
      [
        "2020s",
        "GCSED launched Greene Forward, its infrastructure-updating program, and rolled out Advanced Metering Infrastructure with the WaterSmart customer portal."
      ],
      [
        "2025",
        "System operated on a current, unconditional license with no monitoring, reporting, or enforcement violations."
      ],
      [
        "2026",
        "The 2026 CCR republished a corrected 2024 contaminant table after the prior year's report was found to be inaccurate."
      ]
    ],
    "treat": "The 2026 CCR says the system draws from two well fields, Beaver Valley Road and Valley Springs Road, in the Little Miami River Buried Valley Aquifer, treated at the Northwest Regional plant (North WTP-1, South WTP-2) with chlorination and fluoridation.",
    "press": "Not published; no psi figure appears in the 2026 CCR or the county's schedule of charges.",
    "rate": {
      "g": 5.12,
      "n": "Effective Jan 1, 2026: $14.99/mo minimum (5/8-in meter) covers the first 1,000 gal, then $5.12 per 1,000 gal. Fire and irrigation base rate $9.51/mo.",
      "m": null
    },
    "imp": [
      [
        "Total trihalomethanes (TTHM)",
        "57.1",
        "ppb",
        "80",
        "2025",
        "Range 12.9-79.7; one site came within 0.3 ppb of the MCL. No violation."
      ],
      [
        "Haloacetic acids (HAA5)",
        "9.7",
        "ppb",
        "60",
        "2025",
        "Range 0-12.7 ppb; well under the MCL."
      ],
      [
        "Lead (90th percentile)",
        "2.2",
        "ppb",
        "15",
        "2025",
        "2 of 120 samples exceeded the 15 ppb action level; 90th percentile compliant."
      ],
      [
        "Copper (90th percentile)",
        "0.123",
        "ppm",
        "1.3",
        "2025",
        "0 of 120 samples exceeded the 1.3 ppm action level."
      ],
      [
        "Nitrate",
        "<0.10",
        "ppm",
        "10",
        "2025",
        "Range 0 to <1.0 ppm; essentially non-detect."
      ],
      [
        "Fluoride",
        "0.96916",
        "ppm",
        "4",
        "2025",
        "Range 0.78-1.68; natural deposits plus water additive."
      ],
      [
        "Arsenic",
        "5.8-6.3",
        "ppb",
        "10",
        "2024",
        "North 5.8, South 6.3. The CCR prints the limit as 8; federal MCL is 10 ppb."
      ],
      [
        "Total hardness",
        "8",
        "grains…",
        "n/a",
        "2026",
        "GCSED's published figure for Beavercreek; no aesthetic standard applies."
      ]
    ],
    "proj": [
      [
        "Greene Forward infrastructure program",
        null,
        "",
        "under construction",
        "County water and sewer modernization including the Advanced Metering Infrastructure rollout and WaterSmart customer portal. No cost published."
      ]
    ],
    "plan": [
      [
        "Membrane softening / reverse osmosis facility",
        null,
        "",
        "unknown",
        "Reported by Dayton Daily News as driving a rate increase; could not be verified. GCSED now lists Beavercreek hardness at 8 grains per gallon."
      ]
    ],
    "stress": "Ohio EPA rates the Little Miami River Buried Valley Aquifer highly susceptible: a variable clay layer thinnest at the North Well Field, aquifer as shallow as 21 feet, a documented contaminant plume in the uppermost aquifer, and nearby contaminant sources. TTHM averaged 57.1 ppb in 2025 against an 80 ppb MCL.",
    "sew": {
      "s": "Greene County Sanitary Engineering runs sewer in the Greater Greene-Little Miami Sewer District. Metered rates effective Jan 1, 2026: $23.28/mo minimum (5/8-in meter) covers the first 3,000 gal, then $7.29 per 1,000 gal; unmetered single-family flat rate is $60.24/mo. Plant name, capacity and receiving stream not found.",
      "st": "Not detailed in the CCR or the county's 2026 schedule of charges; no stormwater utility fee appears in that fee schedule."
    },
    "fun": [
      "The plant does not only serve its own system - it also treats water for Greene County's Eastern Regional Water System.",
      "Ohio EPA found a documented contaminant plume in the uppermost aquifer, and the aquifer runs as shallow as 21 feet at the North Well Field.",
      "The county's 2026 report had to reprint its own 2024 contaminant table, which it acknowledged was inaccurate.",
      "Emergency connections to Bellbrook and Fairborn stand ready but delivered zero water in 2025."
    ]
  },
  "zips_served": [
    {
      "zip": "45301",
      "share": 1.0,
      "dominant": true
    },
    {
      "zip": "45430",
      "share": 1.0,
      "dominant": true
    },
    {
      "zip": "45434",
      "share": 1.0,
      "dominant": true
    },
    {
      "zip": "45431",
      "share": 0.5057,
      "dominant": true
    },
    {
      "zip": "45432",
      "share": 0.4938,
      "dominant": true
    },
    {
      "zip": "45440",
      "share": 0.3086,
      "dominant": false
    },
    {
      "zip": "45305",
      "share": 0.138,
      "dominant": false
    },
    {
      "zip": "45385",
      "share": 0.1166,
      "dominant": false
    },
    {
      "zip": "45324",
      "share": 0.0293,
      "dominant": false
    },
    {
      "zip": "45387",
      "share": 0.0017,
      "dominant": false
    }
  ],
  "photo": {
    "url": "/photos/OH2903512.jpg",
    "caption": "View of Beavercreek, Ohio, near the district's well fields",
    "credit": "LittleT889",
    "license": "CC BY-SA 4.0"
  },
  "url": "https://crackedbuckeye.com/water/OH2903512/",
  "api": "https://crackedbuckeye.com/api/water/OH2903512.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), \"Greene County - northwest Reg Water · OH2903512\", https://crackedbuckeye.com/water/OH2903512/, built 2026-09-16, accessed [date].",
  "schema": "https://crackedbuckeye.com/api/schema.json"
}