Water system
New Carlisle City
EPA ID OH1203312 · Clark County · 5,800 people served · owned by a local government
New Carlisle City treats its own water from Groundwater wells (4 wells).
The system's record
- Active wells
- 4
- Serves
- 5,800 people · Clark County
- EPA ID
- OH1203312
About this area's water
Did you know
- New Carlisle's drinking water comes from a wellfield whose surface footprint is a shopping center and Main Street, but whose underground recharge area extends several miles north — the city has posted signs marking the…
- Gangster John Dillinger's very first bank robbery, on June 21, 1933, hit the New Carlisle National Bank for about $10,000. The building still stands at Main and Jefferson.
- The city tested its finished water for radon exactly once, in 2011, finding 2.36 pCi/L. Radon in tap water is not a federally regulated contaminant, and the test has not been repeated.
- The wastewater plant serves more than just New Carlisle — North Hampton and the Northwestern Local Schools are on the same 1.0 mgd system.
History6
- 1810Settlement laid out under the name Monroe; later renamed for Carlisle, Pennsylvania, birthplace of some of the first settlers. Incorporated as a village in 1831.
- 1933John Dillinger committed his first bank robbery at the New Carlisle National Bank on June 21, taking about $10,000. The building still stands at Main and Jefferson streets.
- 1973New Carlisle elevated from village to city status.
- 1991-1999Compliance sampling found detectable 1,1,1-trichloroethane in raw well water on nine occasions, at 0.6 to 1.6 ug/L — well below the 200 ug/L MCL, but evidence of a pathway from the surface into the…
- 1993 onwardNitrate exceeded Ohio EPA's 2 mg/L concentration of concern on 17 occasions in raw and treated water, ranging 2.13 to 4.6 mg/L, all below the 10 mg/L MCL.
- 2020Wells sampled under Ohio's statewide PFAS initiative; PFAS detected below the Ohio EPA action level. The system also took part in the UCMR5 round.
Treatment & pressure
How it is treated
Groundwater from deep wells (SDWIS lists four) drawing on a sand-and-gravel aquifer in a glacier-scoured buried valley. The wellfield sits north and east of the Water Treatment Plant at 434 N. Main Street, bounded at the surface by a shopping center, Main Street, and commercial and residential…
Source: newcarlisleohio.govnewcarlisleohio.gov
Water pressure
Not published. The system is fed by the 1.7-million-gallon Scarff Road elevated tower, but no psi figure or pressure-zone information appears in city materials.
Source: newcarlisleohio.gov
What it costs
Not published online. Confirmed absent from the Public Services water page, the Finance Department page, and the Finance Department's own Water/Sewer page, which covers…
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Nitrate (as nitrogen) Below the MCL but above Ohio EPA's 2 mg/L concentration of concern, consistent with the aquifer's documented nitrate… | 2.30 ppm | 10 (MCL) | 2025 |
| Total Trihalomethanes (TTHM) Chlorination byproduct; range 12.6-40.1 ppb from 2 samples collected. | 40.1 ppb | 80 (MCL) | 2025 |
| Total chlorine residual Running annual average (CCR prints 1.046667); range 0.72-1.20 ppm. | 1.05 ppm | 4 (MRDL) | 2025 |
| Lead (90th percentile) 0 of 20 samples exceeded the lead action level. | 0 ppb | 15 (action… | 2025 |
| Copper (90th percentile) Flagged as a probable CCR error rather than a result. The 2025 CCR prints 1.3 in the 90th-percentile column — exactly… | not reliably… ppm | 1.3 (action… | 2025 |
| Barium Range 0.400-0.400 ppm. | 0.400 ppm | 2 (MCL) | 2023 |
| Fluoride Range 0.264-0.264 ppm. Low enough to suggest the system does not actively fluoridate. | 0.264 ppm | 4 (MCL) | 2020 |
| Gross alpha Naturally occurring radioactivity from erosion of deposits. | 2.85 pCi/L | 15 (MCL) | 2023 |
| PFAS (sum) Statewide PFAS Sampling Initiative; follow-up monitoring ongoing. The CCR does not state which Ohio EPA action level… | 6.1 ppt | below Ohio EPA… | 2020 |
| PFBS Range 0.0043-0.0055 ppb. | 0.0049 ppb | unregulated | 2023 |
Source: newcarlisleohio.gov
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
3 violations of any kind logged since 2020, 3 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans1
Planned or needed
- Ground Water Source Protection Program completion · planned
The 2025 CCR states the city is currently working to complete its Ground Water Source Protection Program, prompted by the aquifer's high susceptibility rating.…
Source: newcarlisleohio.gov
Supply stress
Ohio EPA rates the aquifer highly susceptible to contamination, and the CCR gives three specific reasons: detected volatile organic compounds and elevated nitrate imply a pathway from the ground surface into the aquifer; discontinuous clay layers within the aquifer offer little to no protection against contaminant transport from the…
Source: newcarlisleohio.gov
Sewers
Sanitary
City-owned wastewater treatment plant rated 1.0 mgd using aerobic digestion with clarifiers and filtration, running about 500,000 gallons per day. It serves New Carlisle plus nearby residential developments, mobile home parks, North Hampton, and Northwestern Local Schools via roughly 35 miles of sewer and 200 manholes. The city files an…
Storm
Not detailed in published city materials; no separate stormwater utility or fee identified.
Source: newcarlisleohio.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
- 45344 · Bethel Township and New Carlisle31% 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
New Carlisle City does not buy water from another system on record; it treats its own source water.
No other system is on record buying water from New Carlisle City.
Photograph
On the map
Show this system's territory on the map — 1 ZIP code 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: newcarlisleohio.gov, en.wikipedia.org
History: newcarlisleohio.gov, en.wikipedia.org
Water quality: newcarlisleohio.gov
Planned work: newcarlisleohio.gov
Water pressure: newcarlisleohio.gov
Rates: newcarlisleohio.gov, newcarlisleohio.gov
Sewers: newcarlisleohio.gov
Treatment: newcarlisleohio.gov, newcarlisleohio.gov
Supply stress: newcarlisleohio.gov