Water system
Northwestern W and SD - Mccomb
EPA ID OH3200411 · Hancock County · 1,527 people served · owned by a local government
Northwestern W and SD - Mccomb buys its water from North Baltimore Village.
The system's record
- Water bodies
- Rocky Ford Creek, North Baltimore Reservoir No. 1, North Baltimore Reservoir No. 2
- Raw intakes
- Reservoir
Rocky Ford - Serves
- 3,432 people · Wood County
- EPA ID
- OH8701611
Village fills two upground reservoirs from Rocky Ford Creek (a Portage River tributary), matching SDWIS 'INTAKE ROCKY FORD 2' and the two named reservoirs.
About this area's water
Did you know
- McComb's water actually starts as North Baltimore's water: since a 2022-2024, ~$7.5 million waterline project, it's purchased wholesale and pumped from a single intake on Rocky Ford Creek into two reservoirs holding a…
- Because of past disinfection-byproduct violations, McComb is one of the relatively small number of Ohio systems required to run extra quarterly 'master meter' sampling for TTHM and HAA5 under the state's…
- The district built a whole new, roughly 8-mile waterline (2022-2024) so McComb could stop relying on its own algae-prone Rader Creek reservoirs and instead take water straight from North Baltimore — the switchover was…
- The 2024 CCR for McComb had to be publicly corrected the following year: the original report overstated disinfection byproduct levels (citing 70.6 ppb TTHM when the true figure was 55.15 ppb, and 86.4 ppb HAA5 when the…
History6
- 1993Northwestern Water & Sewer District formed to serve rural areas and small municipalities in Wood County.
- 1994District begins operations January 1.
- 2002District builds its Middleton Pike operations facility in Bowling Green (expanded 2013).
- 2020McComb Water Reclamation Facility (new $7.93M wastewater plant, 388,000 gpd rated capacity) completed, replacing a 1966-era plant that no longer met Ohio EPA discharge standards.
- 2021Excessive non-toxic algae/cyanobacteria growth in McComb's own Rader Creek reservoirs caused taste-and-odor complaints; the district treated the blooms and offered free WaterShed water, and began…
- 2022NWWSD board approves (Sept 22) the ~$7.5M McComb Regional Waterline Connection project to permanently connect McComb to North Baltimore's water supply.
Treatment & pressure
How it is treated
McComb no longer treats its own water: since the 2023 waterline switch it purchases 100% of its supply from the Village of North Baltimore. North Baltimore draws surface water from one intake on Rocky Ford Creek, pumped into two reservoirs (358 million gallons combined storage); its plant has 1.66…
Water pressure
Not published; no CCR or engineering pressure figure found for McComb or its wholesale supplier, North Baltimore.
What it costs
Typical household bill about $103 a month for water.
A McComb-specific per-1,000-gallon rate is not separately published. NWWSD publishes a 2026 district-wide average residential bill (7,500 gal/month): $45.34/month water +…
Source: nwwsd.org
Water quality & impurities9
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total Trihalomethanes (TTHM) Range 15.1-64 ppb; no violation. | 49.3 ppb | 80 | 2025 |
| Haloacetic Acids (HAA5) Range 20.6-34.6 ppb; no violation. Separately, the corrected 2024 HAA5 level (60.80 ppb, range 23.5-40.0 ppb) WAS an… | 33.2 ppb | 60 | 2025 |
| Lead (90th percentile, McComb) Second-half-2025 monitoring, MCLG 0 ppb. The CCR's data table lists '1' individual result over the action level for… | <4 ppb | 15 (AL) | 2025 |
| Copper (90th percentile, McComb) 0.023 ppm first half of 2025, 0.067 ppm second half; 0 of 20 samples exceeded the action level in either period. | 0.023-0.067 ppm | 1.3 (AL) | 2025 |
| Turbidity (North Baltimore source) Range 0.01-0.19 NTU; 96-100% of monthly samples met the turbidity standard. | 0.19 NTU | 0.3 NTU in 95%… | 2025 |
| Nitrate (North Baltimore source) Agricultural runoff / erosion of natural deposits. | 1.36 ppm | 10 | 2025 |
| Fluoride (North Baltimore source) Range 0.80-1.11 ppm; naturally occurring plus water-additive fluoridation. | 0.86 ppm | 4 | 2025 |
| PFBA (unregulated PFAS, UCMR5, North… Range ND-0.0055 ppb; monitored under EPA's 5th Unregulated Contaminant Monitoring Rule. | 0.0027 (average) ppb | no MCL… | 2025 |
| Total Chlorine (McComb) Range 0.8-1.36 ppm; residual disinfectant, no violation. | 1.08 ppm | 4 (MRDL) | 2025 |
Source: nwwsd.org
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2025 (action level 15 ppb).
EPA health-based violations since 2015:
- 2024Haloacetic acids (HAA5) · exceeded a maximum contaminant level · measured 0.061 MG/L (limit 0.06 MG/L) · returned to compliance
- 2023Haloacetic acids (HAA5) · exceeded a maximum contaminant level · measured 0.086 MG/L (limit 0.06 MG/L) · returned to compliance
- 2022Haloacetic acids (HAA5) · exceeded a maximum contaminant level · measured 0.075 MG/L (limit 0.06 MG/L) · returned to compliance
EPA's count of 7 includes 4 repeat quarterly violations of the problems listed.
9 violations of any kind logged since 2020, 2 of them paperwork (monitoring, reporting, public notice or consumer report).
EPA compliance record · North Baltimore Village (treats the water)
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 & plans4
Recent and current work
- McComb Regional Waterline Connection (North Baltimore hookup) · $7.5 million · 2022-2024 · completed
Approved by NWWSD board Sept 22, 2022; ~8 miles of new waterline built by Hillabrand & Sons Construction (~$7M) and B. Hill'z Excavating (~$500K); funded by a… - McComb cyanobacteria/algae taste-and-odor response · 2021 · completed
District treated late-summer cyanobacteria blooms in McComb's then-own Rader Creek reservoirs and offered free WaterShed water during the event; this ~2021… - McComb Water Reclamation Facility (WWTP) · $7.9 million · 2020 · completed
Replaced a 1966-era wastewater plant that no longer met Ohio EPA discharge standards; rated capacity 388,000 gpd (typical dry-weather flow 200,000-300,000… - McComb waterline/hydrant/meter-pit replacement (N. Liberty, W. Main, Pleasant, N. Walnut Streets) · $539,000 · unknown · completed
Smaller, separate project performed by B. Hill'z Excavating; exact year not stated in the source press release.
Supply stress
North Baltimore's Rocky Ford Creek intake, which now supplies 100% of McComb's water, is classified by Ohio EPA policy as 'susceptible' (as are all Ohio surface-water sources), given exposure to agricultural runoff, stormwater, gas stations/commercial sources, new-home construction, oil/gas wells, active/inactive landfills, and…
Source: nwwsd.org
Sewers
Sanitary
McComb's sanitary sewer is served by NWWSD's McComb Water Reclamation Facility, a $7.93M wastewater treatment plant completed in 2020 (rated capacity 388,000 gpd; typical dry-weather flow 200,000-300,000 gpd) that replaced a 1966-era plant no longer meeting Ohio EPA discharge standards; effluent undergoes UV disinfection before discharge…
Storm
Not detailed in sources reviewed.
Source: nwwsd.org
Main supplier in 1 ZIP code
Serves
Main water supplier in 1 ZIP code
- 45858 · Mccomb and Mc Comb52% 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
Northwestern W and SD - Mccomb buys its water from North Baltimore Village.
No other system is on record buying water from Northwestern W and SD - Mccomb.
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: nwwsd.org, nwwsd.org
History: nwwsd.org, nwwsd.org, nwwsd.org, nwwsd.org
Water quality: nwwsd.org
Capital projects: nwwsd.org, nwwsd.org, nwwsd.org, nwwsd.org
Rates: nwwsd.org
Sewers: nwwsd.org
Treatment: nwwsd.org, nwwsd.org
Supply stress: nwwsd.org