{ "type": "water", "pwsid": "OH3101112", "name": "Indian Hill City", "county": "Hamilton", "population": 15000, "producer": true, "source_class": "groundwater", "label": "Little Miami River valley aquifer (wells near Milford)", "bodies": [ "Little Miami River" ], "intakes": [], "wells": 9, "aquifer": "Little Miami River valley aquifer", "notes": "Indian Hill Water Works pumps from 9 wells along the Little Miami River between Milford and Camp Dennison; the aquifer is directly recharged by the river.", "urls": [ "https://indianhill.gov/departments/water-works/", "http://cms6.revize.com/revize/milfordoh/CCR-2023%20Indian%20Hill.pdf" ], "chain": [ "OH3101112" ], "plants": [ { "n": "Indian Hill Water Works", "a": "Indian Hill, OH (Hamilton County) — exact plant address not confirmed", "la": 39.1873, "lo": -84.3502, "pt": "approximate", "wb": "Little Miami River valley aquifer", "src": "Wells in the Little Miami River valley sand-and-gravel aquifer near Milford, serving the Village of Indian Hill; specific well-field location not confirmed from available sources.", "cls": "groundwater", "in": [ { "n": "Glendale-Milford Road well field (Little Miami River valley)", "wb": "Little Miami River valley sand-and-gravel aquifer", "role": "primary", "src": "Nine shallow wells (under 15-30 ft deep) along the Little Miami River between Milford and Camp Dennison, next to the treatment plant on SR 126 (9 wells · under 15-30 ft)", "la": 39.1873, "lo": -84.3502, "pt": "plant", "sh": 100, "wells": [ "Well 3", "Well 4", "Well 5", "Well 6", "Well 7", "Well 8", "Well 9", "Well 10", "Well 11" ] } ] } ], "facts": { "hist": [ [ "1949", "Indian Hill Water Works established with construction of the treatment plant on State Route 126 (Glendale Milford Road)." ], [ "2011", "Ohio EPA endorsed the Indian Hill Water Works Source Water Assessment and Protection Plan, which rated the aquifer highly susceptible to contamination." ], [ "2024", "During the summer drought the village used its emergency connections with Greater Cincinnati Water Works to buy supplemental water." ], [ "2025", "Village Council approved rebuilding the 1936 water tower at its existing 5355 Miami Road site in November, after an AECOM engineering study confirmed the site was feasible." ], [ "2026", "5% water rate increase for all customers effective July 1; Council also began readings on a Chapter 51 amendment moving water billing from quarterly to monthly." ] ], "treat": "Nine groundwater wells along the Little Miami River, in Hamilton and Clermont counties between Milford and Camp Dennison, feed a treatment plant sitting adjacent to the wellfield at 7100 Glendale Milford Road (State Route 126). The groundwater is softened to remove a portion of the hardness…", "press": "No system-wide psi figure is published. The village does report that its 1936 elevated tower at 5355 Miami Road delivers only about 70,000 gallons of effective operating storage -…", "rate": { "g": 9.02, "n": "Village schedule with a 5% increase for all customers effective July 1, 2026. A 5/8-inch meter pays an $87.75 minimum quarterly charge covering 13 ccf (about 9,724 gallons), then…", "m": 45.11 }, "imp": [ [ "Total trihalomethanes (TTHM)", "31.4", "ppb", "80", "2025", "Range 28.9-31.4 ppb. Chlorination by-product." ], [ "Haloacetic acids (HAA5)", "7.7", "ppb", "60", "2025", "Range 7.4-7.7 ppb." ], [ "Total chlorine", "0.92", "ppm", "4 (MRDL)", "2025", "Range 0.79-1.01 ppm." ], [ "Fluoride", "1.04", "ppm", "4", "2025", "Added for dental health; range 0.81-1.08 ppm." ], [ "Nitrate", "1.63", "ppm", "10", "2025", "The village's own CCR flags nitrate as detected at a level of concern - evidence of land-use impact on this shallow…" ], [ "Barium", "0.029", "ppm", "2", "2024", "Monitored less than annually; erosion of natural deposits." ], [ "Lead (90th percentile)", "1.65", "ppb", "15 (action…", "2025", "Zero of 31 samples above the action level." ], [ "Copper (90th percentile)", "0.918", "ppm", "1.3 (action…", "2025", "Zero of 31 samples above the action level." ], [ "Chloroform", "14.94", "ppb", "no MCL…", "2025", "Range 14.12-15.75 ppb; the dominant component of the system's trihalomethanes." ], [ "Bromodichloromethane", "9.47", "ppb", "no MCL…", "2025", "Range 9.08-9.85 ppb; MCLG 0." ] ], "proj": [ [ "Source water protection measures at the shooting ranges, salt storage and wellfield", null, "", "completed", "Since the 2011 Ohio EPA endorsement the village added best management practices for lead at the Indian Hill Shooting Ranges and for road salt storage at the…" ], [ "UCMR 5 PFAS monitoring", null, "2024", "completed", "The village completed part of its federal PFAS monitoring obligation through the Unregulated Contaminant Monitoring Rule 5 program; results were published in…" ] ], "plan": [ [ "New elevated water tower at 5355 Miami Road", null, "2027", "planned", "Replaces the 1936 tower, going from about 70,000 gallons of effective operating storage to 1-1.5 million gallons and raising system pressure by roughly 3.03…" ], [ "PFAS removal treatment", null, "2029", "planned", "The village has submitted a general plan for PFAS removal to Ohio EPA and is awaiting approval; design and construction follow, with the facility to be…" ] ], "stress": "Quality-side stress is documented and specific: the Ohio EPA-endorsed source water assessment rates the aquifer supplying Indian Hill highly susceptible to contamination for three stated reasons - no protective clay, shale or other low-permeability layer over the aquifer; a shallow aquifer only 15-30 feet below the surface; and man-made…", "sew": { "s": "Indian Hill does not treat wastewater. Sewer charges appear on the village utility bill, but the rates are set by the Metropolitan Sewer District of Greater Cincinnati, most recently effective January 1, 2026; the village's published schedule notes a sewer winter high cap that resets in February, March and April.", "st": "Not documented in the village sources reviewed - no stormwater utility, fee or drainage program appears in the water works, rate or CCR material." }, "fun": [ "Indian Hill's treatment plant sits directly on top of its own wellfield at 7100 Glendale Milford Road, and the nine wells straddle the Hamilton-Clermont county line along the Little Miami River between Milford and Camp…", "The utility reaches far past the village line: Terrace Park, Camp Dennison, roughly half of Madeira, and parts of Montgomery, Milford, Symmes Township and Columbia Township all buy Indian Hill water, each paying a 25%…", "The tower Indian Hill is replacing was built in 1936 and, because of its low overflow elevation, holds only about 70,000 usable gallons - 14% of its 500,000-gallon nameplate - for a system that pumps 1.5 to 5 million…", "The plant produced more than 801 million gallons in 2025, and the village still keeps standby connections to Greater Cincinnati Water Works - which it actually used during the 2024 summer drought." ], "src": { "history": [ "https://indianhill.gov/departments/water-works/", "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf", "https://indianhill.gov/water-tower-faqs/", "https://indianhill.gov/important-notice-switch-to-monthly-water-utility-billing" ], "treatment": [ "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf", "https://indianhill.gov/departments/water-works/" ], "pressure": [ "https://indianhill.gov/water-tower-faqs/" ], "rates": [ "https://storage.googleapis.com/proudcity/indianhilloh/2025/02/6a97ea1b-water-rate-7.26.pdf", "https://indianhill.gov/documents/water-sewer-rates/" ], "impurities": [ "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf" ], "projects": [ "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf" ], "planned": [ "https://indianhill.gov/water-tower-faqs/", "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf" ], "water_stress": [ "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf" ], "sewer": [ "https://storage.googleapis.com/proudcity/indianhilloh/2025/02/6a97ea1b-water-rate-7.26.pdf" ], "fun_facts": [ "https://storage.googleapis.com/proudcity/indianhilloh/2026/03/f086c7b1-ccr-2025.pdf", "https://indianhill.gov/departments/water-works/", "https://indianhill.gov/water-tower-faqs/", "https://storage.googleapis.com/proudcity/indianhilloh/2025/02/6a97ea1b-water-rate-7.26.pdf" ] } }, "zips_served": [ { "zip": "45111", "share": 1.0, "dominant": true }, { "zip": "45174", "share": 0.8686, "dominant": true }, { "zip": "45243", "share": 0.6794, "dominant": true }, { "zip": "45242", "share": 0.0419, "dominant": false }, { "zip": "45249", "share": 0.0005, "dominant": false }, { "zip": "45150", "share": 0.0001, "dominant": false } ], "photo": { "url": "/photos/OH3101112.jpg", "caption": "Gazebo in Terrace Park, Ohio, one of the towns served by Indian Hill's Little Miami valley wells", "credit": "Greg Hume", "license": "CC BY-SA 4.0" }, "url": "https://crackedbuckeye.com/water/OH3101112/", "api": "https://crackedbuckeye.com/api/water/OH3101112.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), \"Indian Hill City · OH3101112\", https://crackedbuckeye.com/water/OH3101112/, built 2026-09-16, accessed [date].", "schema": "https://crackedbuckeye.com/api/schema.json" }