Water system
Greene County Eastern Regional
EPA ID OH2906103 · Greene County · 4,800 people served · owned by a local government
Greene County Eastern Regional buys its water from Greene County - northwest Reg Water.
The system's record
- Aquifer
- Little Miami River Buried Valley Aquifer
- Active wells
- 17
- Serves
- 41,895 people · Greene County
- EPA ID
- OH2903512
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.
About this area's water Greene County - northwest Reg Water
Did you know
- 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.
History4
- 2020Ohio 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.
- 2020sGCSED launched Greene Forward, its infrastructure-updating program, and rolled out Advanced Metering Infrastructure with the WaterSmart customer portal.
- 2025System operated on a current, unconditional license with no monitoring, reporting, or enforcement violations.
- 2026The 2026 CCR republished a corrected 2024 contaminant table after the prior year's report was found to be inaccurate.
Treatment & pressure
How it is treated
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.
Water pressure
Not published; no psi figure appears in the 2026 CCR or the county's schedule of charges.
What it costs
$5.12 per 1,000 gallons
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.
Water quality & impurities8
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total trihalomethanes (TTHM) Range 12.9-79.7; one site came within 0.3 ppb of the MCL. No violation. | 57.1 ppb | 80 | 2025 |
| Haloacetic acids (HAA5) Range 0-12.7 ppb; well under the MCL. | 9.7 ppb | 60 | 2025 |
| Lead (90th percentile) 2 of 120 samples exceeded the 15 ppb action level; 90th percentile compliant. | 2.2 ppb | 15 | 2025 |
| Copper (90th percentile) 0 of 120 samples exceeded the 1.3 ppm action level. | 0.123 ppm | 1.3 | 2025 |
| Nitrate Range 0 to <1.0 ppm; essentially non-detect. | <0.10 ppm | 10 | 2025 |
| Fluoride Range 0.78-1.68; natural deposits plus water additive. | 0.96916 ppm | 4 | 2025 |
| Arsenic North 5.8, South 6.3. The CCR prints the limit as 8; federal MCL is 10 ppb. | 5.8-6.3 ppb | 10 | 2024 |
| Total hardness GCSED's published figure for Beavercreek; no aesthetic standard applies. | 8 grains… | n/a | 2026 |
EPA compliance record · Greene County Eastern Regional
Lead at the tap: 90th-percentile result 3 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
EPA compliance record · Greene County - northwest Reg Water (treats the water)
Lead at the tap: 90th-percentile result 0 ppb in 2026 (action level 15 ppb).
EPA record: no health-based violations since 2015.
1 violation of any kind logged since 2020, 1 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans2
Recent and current work
- Greene Forward infrastructure program · under construction
County water and sewer modernization including the Advanced Metering Infrastructure rollout and WaterSmart customer portal. No cost published.
Planned or needed
- Membrane softening / reverse osmosis facility
Reported by Dayton Daily News as driving a rate increase; could not be verified. GCSED now lists Beavercreek hardness at 8 grains per gallon.
Supply 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.
Sewers
Sanitary
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.
Storm
Not detailed in the CCR or the county's 2026 schedule of charges; no stormwater utility fee appears in that fee schedule.
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources.
Present in 2 ZIP codes
Serves
Main water supplier in 1 ZIP code
- 45384 · Xenia Township and Wilberforce14% of residents
Also present in 1 more ZIP code
- 45385 · Xenia0% of residents
Population-weighted resident shares; a ZIP code can have more than one system on record. Recomputed from each ZIP's own system list, not from the map's cached footprint.
Buys from · Sells to
Greene County Eastern Regional buys its water from Greene County - northwest Reg Water.
No other system is on record buying water from Greene County Eastern Regional.
On the map
Show this system's territory on the map — 2 ZIP codes in all.
Sources
U.S. EPA SDWIS and Community Water System Service Area Boundaries (v3, 2026), Ohio EPA primacy data, 2020 census blocks: the system serving most residents, traced through purchases to the treating utility; Ohio EPA 2023 Sewer and Water Rate Survey (Ohio State, May 2025) for household bills; Ohio EPA DEFA loan awards since 2016 for the loans paragraph · EPA SDWIS · EPA service area boundaries · Ohio EPA drinking water · Ohio EPA rate survey