Water system
Clear Water Corporation
EPA ID OH6100103 · Noble County · 2,670 people served
Clear Water Corporation buys its water from Caldwell Village.
The system's record
- Water bodies
- Wolf Run Lake, Caldwell Lake
- Raw intakes
- Caldwell Wolf Run Lake I
Caldwell Caldwell Lake I - Serves
- 3,300 people · Noble County
- EPA ID
- OH6100011
Wolf Run Lake (Wolf Run State Park) is the primary source due to better water quality; Caldwell Lake (500-million-gallon reservoir) serves as a secondary/backup source.
About this area's water Caldwell Village
Did you know
- Wolf Run Lake is a 220-acre lake half a mile east of the Belle Valley interchange, where I-77 meets S.R. 821; the village's intakes are built at the dam and the same lake doubles as a state park with swimming, fishing…
- Caldwell Lake holds 500 million gallons behind its dam and has three-level intakes, so operators can draw from whichever depth has the best water that day.
- The 2019 CCR's cover is a 1939 photograph of a worker standing at the Caldwell Water Works lime feeders.
- The file the village currently posts as its 2026 water quality report is Ohio EPA's blank CCR template, still carrying placeholders like {Water System Name} and empty contaminant tables, with only the cover page filled…
Source: caldwellohio.orgcaldwellohio.org
History5
- 1939A photograph of a worker at the Caldwell Water Works lime feeders, used as the cover of the 2019 CCR, shows the plant already running lime treatment by this date.
- 2019Disinfection byproducts hit their published high: TTHM averaged 64.88 ppb with an individual result of 80.2 ppb, and HAA5 averaged 46.03 ppb with an individual result of 61.9 ppb, both against limits…
- 2023One of twenty lead tap samples came back above the 15 ppb action level, with individual results ranging up to 35 ppb; the 90th percentile was 0 ppb, so the system did not exceed the action level.
- 2024Disinfection byproducts fell sharply, to a TTHM average of 30.5 ppb and an HAA5 average of 31.7 ppb, and the village reported meeting all monitoring requirements with no violations for the year.
- 2026The document posted on the village website as the 2026 Caldwell Water CCR is the blank Ohio EPA CCR template, carrying unfilled placeholders such as {Water System Name} and empty contaminant tables…
Treatment & pressure
How it is treated
Conventional surface-water treatment with taste, odor and organics control. EPA's SDWIS treatment record for the Caldwell plant lists rapid mix, coagulation, a clarifier/solids-contact unit, pH adjustment, potassium permanganate, powdered activated carbon, granular activated carbon, rapid sand…
Source: data.epa.govcaldwellohio.orgcaldwellohio.org
Water pressure
Not published. Neither the 2019 nor the 2025 CCR, nor any village engineering document located, states a service pressure or describes pressure zones.
What it costs
Not published online. The village runs an online bill-pay portal (caldwellohio.authoritypay.com) and lists drop-box and drive-thru payment options, but posts no water or sewer…
Source: caldwellohio.orgcaldwellohio.org
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total Trihalomethanes (TTHM) Range 10.8-42.3 ppb. Down sharply from the 64.88 ppb average reported for 2019. | 30.5 ppb | 80 | 2024 |
| Haloacetic Acids (HAA5) Range 6-47.8 ppb. Down from 46.03 ppb in 2019. | 31.7 ppb | 60 | 2024 |
| Total Chlorine Range 1.64-2.06 ppm. | 1.89 ppm | MRDL=4 | 2024 |
| Barium Erosion of natural deposits, discharge from drilling wastes and metal refineries. | 0.24 ppm | 2 | 2024 |
| Fluoride Range 1.02-1.02 ppm; water additive plus natural deposits. | 1.02 ppm | 4 | 2024 |
| Nitrate Range 0.2-0.406 ppm. The CCR labels this row ug/L, but the MCL of 10 makes clear the values are mg/L (ppm). | 0.406 ppm | 10 | 2024 |
| Lead (90th percentile) Individual results ranged 0-35 ppb, and the CCR states that 1 of 20 samples was found to have lead in excess of the 15… | 0 ppb | AL=15 | 2023 |
| Copper (90th percentile) Range 0-0.045 ppm; 0 of 20 samples exceeded the action level. | 0.045 ppm | AL=1.3 | 2023 |
| Turbidity Highest recorded result; 100 percent of samples met the standard. The 2025 CCR's narrative paragraph contradicts its… | 0.23 NTU | TT (0.3 NTU in… | 2024 |
| Total Organic Carbon (removal ratio) Range 1.28-2.72. A value above 1 means the plant met its TOC removal requirement. | 1.28 ratio | TT (must be… | 2024 |
Source: caldwellohio.orgcaldwellohio.org
EPA compliance record · Clear Water Corporation
Lead at the tap: 90th-percentile result 0 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
6 violations of any kind logged since 2020, 6 of them paperwork (monitoring, reporting, public notice or consumer report).
EPA compliance record · Caldwell Village (treats the water)
Lead at the tap: 90th-percentile result 0 ppb in 2023 (action level 15 ppb).
EPA record: no health-based violations since 2015.
4 violations of any kind logged since 2020, 4 of them paperwork (monitoring, reporting, public notice or consumer report).
Supply stress
A two-reservoir surface supply. Ohio treats all surface waters as susceptible to contamination, and the CCR repeats that no single treatment technique addresses every contaminant. Redundancy is the system's main protection: Wolf Run Lake covers 220 acres with intakes at the dam, and Caldwell Lake holds 500 million gallons with…
Source: caldwellohio.orgcaldwellohio.org
Sewers
Sanitary
The village runs a Sewer Department (caldwellohio.org/departments/sewer/), but publishes no plant name, capacity, receiving stream or NPDES permit number, and no consent-order status was located.
Storm
Not documented. The village publishes nothing on storm sewers.
Source: caldwellohio.org
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
- 43779 · Center Township and Sarahsville18% of residents
Also present in 1 more ZIP code
- 43724 · Olive Township and Caldwell0% 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
Clear Water Corporation buys its water from Caldwell Village.
No other system is on record buying water from Clear Water Corporation.
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