Water system
Noble Water Company
EPA ID OH6100203 · Noble County · 815 people served
Noble Water Company 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 · Noble Water Company
Lead at the tap: 90th-percentile result 0 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
2 violations of any kind logged since 2020, 2 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 1 ZIP code
Serves
No ZIP code has Noble Water Company on record as its main water supplier.
Also present in 1 more ZIP code
- 43724 · Olive Township and Caldwell1% 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
Noble Water Company buys its water from Caldwell Village.
1 system on record buys water from Noble Water Company: Noble County Water Authority.
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