Water system
Clark County Park Layne
EPA ID OH1201112 · Clark County · 4,221 people served · owned by a local government
Clark County Park Layne treats its own water from Groundwater wells (3 wells).
The system's record
- Active wells
- 3
- Serves
- 4,221 people · Clark County
- EPA ID
- OH1201112
About this area's water
Did you know
- Park Layne's three wells sit in the Great Miami Buried Valley Aquifer and average about 439,000 gallons a day - roughly 104 gallons per person served.
- Clark County runs eight separately priced water and sewer districts; Park Layne is one of the cheapest because it pumps its own groundwater, while the Northridge and Rockway districts carry a 12% City of Springfield…
- In the Medway and Crystal Lakes vacuum sewer systems, sewage is pulled to the collection stations under vacuum rather than pushed by gravity - and because the collection tank cannot be taken out of service without…
- The county's own 2025 report misspells its system as the 'Park Lanye PWS' in the unregulated contaminant section.
Source: clarkcountyohio.govclarkcountyohio.govclarkcountyohio.gov
History6
- 1958Clark County's utilities operation was established by the Board of County Commissioners; it now runs the Park Layne, Green Meadows I and II, Limecrest, Northridge, Center Point 70, Rockway…
- 1816Medway, the village the Park Layne district supplies, was platted and named for sitting midway between Springfield and Dayton (Wikipedia).
- 1992The county's two Airvac vacuum sewage collection systems serving Medway and Crystal Lakes were constructed.
- 2023-11A contractor's survey of the Crystal Lakes vacuum station steel collection tank found wall thickness reduced to the point that both station tanks needed replacement; pinholes had earlier been patched…
- 2024Park Layne participated in the fifth round of the Unregulated Contaminant Monitoring Rule (UCMR5); results are available only by phoning the utilities director.
- 2025Clark County held an unconditioned license to operate the Park Layne system and recorded no water quality violations.
Source: clarkcountyohio.govclarkcountyohio.govclarkcountyohio.gov
Treatment & pressure
How it is treated
Groundwater. The Park Layne Well Field at 886 Weinland Street draws from the Great Miami Buried Valley Aquifer through three wells producing an average of about 439,000 gallons per day. Treatment documented in the 2025 CCR is chlorination (total chlorine 0.79-1.27 ppm in distribution) and…
Source: clarkcountyohio.govdata.epa.gov
Water pressure
Not published; the county's CCR and billing pages give no system pressure figures.
Source: clarkcountyohio.gov
What it costs
$5.68 per 1,000 gallons
Typical household bill about $33 a month for water.
Park Layne district water, effective on bills sent after 1-29-2026 (Appendix A of the Clark County Water and Sewer Regulations): 5/8-inch meter minimum $16.16 per month, which…
Water quality & impurities5
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Nitrate Roughly 41% of the MCL in a shallow, highly susceptible buried-valley aquifer with agricultural and septic sources… | 4.14 ppm | 10 (MCL) | 2025 |
| Copper 0 of 20 samples over the action level. No lead result appears in the 2025 CCR's detected-contaminant table. | 0.360 (90th… ppm | 1.3 (action… | 2024 |
| Total trihalomethanes (TTHM) Low, as expected for chlorinated groundwater with little organic carbon. | 17.2 (range… ppb | 80 (MCL) | 2025 |
| Total chlorine Residual disinfectant in the Park Layne distribution system. | 1.13 (range… ppm | 4 (MRDL) | 2025 |
| Fluoride Fluoridated to about the optimal 0.7-1.0 ppm range. | 1.01 (range… ppm | 4 (MCL) | 2025 |
Source: clarkcountyohio.gov
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2024 (action level 15 ppb).
EPA record: no health-based violations since 2015.
Projects & plans2
Recent and current work
- Crystal Lakes and Medway vacuum sewer tank replacement · $1.1 million · 2026 · planned
Fiberglass replacement collection tanks at the Medway Station (214 Sycamore Street) and Crystal Lakes Station (5 Elm Road), with the corroded 1992 steel tanks… - Lead service line inventory · 2024 · completed
Published as a shared spreadsheet linked from the Park Layne CCR.
Source: clarkcountyohio.govclarkcountyohio.govclarkcountyohio.gov
Supply stress
Ohio EPA's source water assessment found the aquifer supplying Park Layne has a high susceptibility to contamination because a relatively thin clay layer overlies it, the water table is shallow, and potential contamination sources sit in the protection areas. The district has only three wells averaging about 439,000 gpd for roughly 4,200…
Source: clarkcountyohio.govdata.epa.gov
Sewers
Sanitary
Clark County Utilities also provides sanitary sewer in the Park Layne district (5/8-inch minimum $22.07 per month plus $5.05 per 100 cubic feet over 300 cf). Nearby Medway and Crystal Lakes are served by two 1992 Airvac vacuum collection systems in which up to four houses drain by gravity into each vacuum pit; the county does not publish…
Storm
Not documented in county utilities materials.
Source: clarkcountyohio.govclarkcountyohio.govclarkcountyohio.gov
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources.
Main supplier in 1 ZIP code
Serves
Main water supplier in 1 ZIP code
- 45341 · Bethel Township and Medway34% of residents
Also present in 1 more ZIP code
- 45344 · Bethel Township and New Carlisle24% 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
Clark County Park Layne does not buy water from another system on record; it treats its own source water.
1 system on record buys water from Clark County Park Layne: Bethel Township Water System.
Photograph
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
Notable facts: clarkcountyohio.gov, clarkcountyohio.gov, clarkcountyohio.gov
History: clarkcountyohio.gov, clarkcountyohio.gov, clarkcountyohio.gov, en.wikipedia.org
Water quality: clarkcountyohio.gov
Water pressure: clarkcountyohio.gov
Capital projects: clarkcountyohio.gov, clarkcountyohio.gov, clarkcountyohio.gov
Rates: clarkcountyohio.gov, clarkcountyohio.gov
Sewers: clarkcountyohio.gov, clarkcountyohio.gov, clarkcountyohio.gov
Treatment: clarkcountyohio.gov, data.epa.gov
Supply stress: clarkcountyohio.gov, data.epa.gov