Water system
Tontogany Village
EPA ID OH8702503 · Wood County · 400 people served · owned by a local government
Tontogany Village buys its water from Bowling Green City.
The system's record
- Water bodies
- Maumee River, Bowling Green Reservoir
- Raw intakes
- Reservoir
Maumee River - Serves
- 31,578 people · Wood County
- EPA ID
- OH8700311
About this area's water
Did you know
- Tontogany buys 100% of its drinking water from the City of Bowling Green and simply redistributes it — it has no wells or treatment plant of its own.
- Bowling Green stores its Maumee River water in a 170-million-gallon above-ground reservoir before treating it through two parallel systems: conventional filtration and reverse-osmosis membrane treatment.
- In August 2026, Bowling Green had to send a formal Drinking Water Notice after 29 days of low corrosion-control chemical dosing earlier that year — not an emergency, but it required extra lead and copper testing.
- Tontogany bills a separate monthly 'water line maintenance fee' that scales from $15 for a household meter up to $600 for a 6-inch industrial meter, on top of its metered consumption rate.
History5
- 1855/1874Platted in 1855 and incorporated as a village in 1874. Its later development of a distribution system fed entirely by purchased Bowling Green water, rather than its own…
- 2001-2007Bowling Green's water system carried a violation for an inadequate yearly water quality report (the Consumer Confidence Report) beginning July 1, 2001, not resolved until June 14, 2007 — confirmed via EPA SDWIS violation records for…
- 2019-2021Bowling Green logged three monitoring/reporting violations: July-Dec 2019 (resolved June 30, 2020), Sept 2020 (resolved Oct 31, 2020), and July-Dec 2020 (resolved June 30, 2021) — confirmed via EPA…
- 2026Bowling Green Water Treatment Plant completed upgrades: rebuilt all six rapid sand filter underdrains with added air backwash, and added two microfiltration trains to better utilize its…
- 2026Bowling Green failed to maintain required corrosion-control orthophosphate levels (≥1.5 mg/L) on 29 days during the January-June 2026 monitoring period; a Drinking Water Notice (PWSID OH8700311…
Treatment & pressure
How it is treated
Tontogany buys 100% of its finished drinking water from the City of Bowling Green and redistributes it — it has no wells, treatment plant, or water source of its own (per the village's own utilities page). Bowling Green draws surface water from the Maumee River into a 170-million-gallon…
Source: tontoganyohio.govbgohio.gov
Water pressure
Not published for Tontogany or for Bowling Green's supply to it.
What it costs
$16.24 per 1,000 gallons
This is Tontogany's own posted rate (on tontoganyohio.gov/utilities, not Bowling Green's rate), effective May 1, 2026: in-town minimum $32.41 covers the first…
Source: tontoganyohio.gov
Water quality & impurities8
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total Trihalomethanes (TTHM) Range of detection 34.3-85.7 ppb across the system; no violation. Confirmed exactly in Bowling Green's 2025 CCR, which… | 66.6 ppb | 80 (MCL) | 2025 |
| Haloacetic Acids (HAA5) Chlorination byproduct; range 8.3-27.7 ppb; no violation. Confirmed in the CCR. | 23.1 ppb | 60 (MCL) | 2025 |
| Nitrate (as Nitrogen) Detected up to 7.3 ppm (range <0.2-7.3); attributed to agricultural runoff; no violation. Confirmed in the CCR. | 7.3 ppm | 10 (MCL) | 2025 |
| Total Chlorine (residual disinfectant) Range 1.3-1.6 ppm; no violation. Confirmed in the CCR. | 1.5 ppm | 4.0 (MRDL) | 2025 |
| Lead (90th percentile) 0 of 31 samples exceeded the lead action level. Confirmed in the CCR. | <4 ppb | 15 (Action… | 2025 |
| Copper (90th percentile) 0 of 31 samples exceeded the copper action level. Confirmed in the CCR. | 0.029 ppm | 1.3 (Action… | 2025 |
| Turbidity Range 0.02-0.10 NTU; 100% of samples met the standard. Confirmed in the CCR. | 0.10 NTU | 0.3 (TT) | 2025 |
| Orthophosphate (corrosion control) Jan-June 2026 corrosion-control treatment violation triggering a Drinking Water Notice and increased lead/copper… | out of range on… mg/L… | ≥1.5 mg/L… | 2026 |
Source: bgohio.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.
2 violations of any kind logged since 2020: 2 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records).
EPA compliance record · Bowling Green City (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.
2 violations of any kind logged since 2020: 2 for required testing that was missed or reported late.
Projects & plans3
Recent and current work
- Rapid sand filter rebuild (Bowling Green WTP) · 2026 · completed
All six rapid sand filters at the Bowling Green plant had underdrains rebuilt and air added to the backwash cycle; benefits Tontogany as a wholesale customer.… - Microfiltration train addition (Bowling Green WTP) · 2026 · completed
Two new microfiltration trains were added to improve use of the plant's reverse-osmosis membranes, per the 2025 CCR.
Source: bgohio.gov
Planned or needed
- Corrosion control corrective action plan · 2026 · planned
Bowling Green must submit a written explanation and prevention plan to Ohio EPA by September 10, 2026 after 29 days of out-of-range orthophosphate dosing in…
Source: tontoganyohio.gov
Supply stress
Tontogany has no water source of its own — it is entirely dependent on Bowling Green's Maumee River supply and treatment, and on the Northwestern Water & Sewer District for sewer billing. Any Bowling Green supply or treatment problem, such as the confirmed 2026 corrosion-control lapse, passes directly to Tontogany customers. This framing…
Sewers
Sanitary
Tontogany does not operate its own sanitary sewer treatment plant; the village bills residents on behalf of the Northwestern Water & Sewer District for sewer service — confirmed directly on the village's own utilities page. No specific wastewater plant name, capacity, or consent decree was found anywhere.
Storm
Not documented on any available village or county source.
Source: tontoganyohio.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
- 43565 · Tontogany100% of residents
Also present in 1 more ZIP code
- 43402 · Bowling Green0% 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
Tontogany Village buys its water from Bowling Green City.
No other system is on record buying water from Tontogany Village.
What the records show about Tontogany Village
Who runs it
EPA's record describes Tontogany Village as owned by a local government. It has 280 service connections and serves 400 people.
EPA classes it as a community water system, one that serves the same residents all year.
Its office telephone on EPA's record is 419-823-9013.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
Tontogany Village buys water that Bowling Green City treats first, so the steps that count are the seller's. EPA's treatment table registers these steps for Bowling Green City: aeration, corrosion control, cartridge filtration, coagulation and settling, chlorine disinfection, iron and manganese removal, fluoridation, granular activated carbon, lime softening, reverse osmosis, sand or media filtration, and ultraviolet disinfection.
The list is what each system registered with EPA for treatment plants EPA still shows as active, and it can lag a plant upgrade.
Source: EPA Safe Drinking Water Information System (SDWIS) treatment table (EPA Envirofacts, pulled September 2026).
Violations
EPA's record shows no health-based violations for Tontogany Village since 2015.
EPA logs 2 violations of any kind since 2020: 2 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records).
Source: EPA Safe Drinking Water Information System (SDWIS) violation records: health-based violations with compliance periods beginning in 2015 or later, all violations from 2020 or later (EPA Envirofacts, pulled September 2026).
Lead and copper at the tap
In the sampling period ending December 2025, the 90th-percentile lead result at Tontogany Village was 0 ppb, under both the current 15 ppb action level and the 10 ppb level that applies from 2027. A result of 0 means at least nine in ten of the homes sampled had no lead detected.
EPA has 7 sampling periods on file for Tontogany Village since 2016, the first ending in 2017; no period was above 10 ppb.
Every water system has to inventory its service lines, the pipes from the main to each building. In the inventory Tontogany Village sent EPA, 273 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 0 |
| Unknown material | 0 |
| Not lead | 273 |
| All lines | 273 |
Systems sample taps in the homes most likely to have lead pipes or solder. The 90th-percentile result is the level nine in ten of the sampled homes were at or below. Lead comes mostly from service lines and house plumbing, not the source water, so a low result for the system does not clear an old house.
EPA's dashboard status for this inventory: reported all required service line types.
Source: EPA Safe Drinking Water Information System (SDWIS) lead and copper 90th-percentile results (EPA Envirofacts), sampling periods ending 2016 or later; EPA's service line inventory dashboard, Ohio's 2026 Q2 submission.
PFAS
The water Tontogany Village buys is treated by Bowling Green City, so the results below are Bowling Green City's.
EPA's fifth national round of testing (UCMR 5) took 4 samples of the water entering the pipes of Bowling Green City in 2023 to 2024 and measured 29 PFAS.
PFOA and PFOS were not detected, against a federal limit of 4 ng/L each.
The highest PFAS results were PFPeA 9.6 ng/L, PFHxA 6.9 ng/L, and PFBA 6.7 ng/L.
Ohio EPA's own statewide sampling tested 1 plant of Bowling Green City (latest sample September 2020). Not one of the six PFAS tested (PFOA, PFOS, PFHxS, PFNA, GenX and PFBS) was detected.
Ohio EPA's current sampling status map lists 1 plant of Bowling Green City as sampled, most recently March 2024.
| Compound | Highest result | Federal limit |
|---|---|---|
| PFOA | not detected | 4 ng/L |
| PFOS | not detected | 4 ng/L |
PFAS are the 'forever chemicals' from firefighting foam, plating shops and non-stick coatings. Results are for water leaving the plant, not your tap.
Source: EPA UCMR 5 occurrence data (final release, August 2026); Ohio EPA statewide PFAS sampling, 2019 to 2021, and its sampling status map.
Disinfection byproducts
Chlorine that disinfects water also reacts with organic matter to form byproducts. Two groups have federal limits: total trihalomethanes (TTHM, 80 µg/L) and five haloacetic acids (HAA5, 60 µg/L), judged on running yearly averages at each sampling site.
For TTHM, the average of Tontogany Village's samples in 2019, the last year it was sampled, was 41.1 µg/L. The worst yearly average was 64 µg/L and the highest single sample was 87.2 µg/L, from 57 samples taken from 2012 to 2019.
For HAA5, the average in the last year sampled was 16.2 µg/L. The worst yearly average was 23.2 µg/L and the highest single sample was 34.5 µg/L, from 57 samples.
| Byproduct | Limit | Latest yearly average | Worst yearly average | Highest sample | Samples |
|---|---|---|---|---|---|
| TTHM | 80 µg/L | 41.1 µg/L (2019) | 64 µg/L | 87.2 µg/L | 57 |
| HAA5 | 60 µg/L | 16.2 µg/L | 23.2 µg/L | 34.5 µg/L | 57 |
A yearly average of 0 means nothing was detected in that year's samples. EPA's file stops at 2019; Ohio EPA's Drinking Water Watch has newer results.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, distribution-system samples (non-detects counted as zero).
Nitrate, arsenic and radioactivity
The water Tontogany Village buys is treated by Bowling Green City, so the results below are Bowling Green City's.
Nitrate: the highest of 174 samples was 8.68 mg/L (as nitrogen) in 2013; in 2019, the last year sampled, the highest was 4.12 mg/L. No sample was over the limit of 10 mg/L. Nitrate above 10 is unsafe for infants.
Arsenic was not detected in 8 samples (limit 10 µg/L).
| Contaminant | Samples | Highest result | Limit | Samples over limit |
|---|---|---|---|---|
| Nitrate (as nitrogen) | 174 | 8.68 mg/L | 10 mg/L | 0 |
| Arsenic | 8 | not detected | 10 µg/L | 0 |
Measured in finished water: at the plant's entry points and in the distribution system; raw well and intake samples are left out. Non-detects count as zero.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Bowling Green City.
Solvents and fuels
The water Tontogany Village buys is treated by Bowling Green City, so the results below are Bowling Green City's.
EPA's file holds results for all six solvent and fuel compounds it checked. Benzene, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene, tetrachloroethylene, and vinyl chloride were not detected in 8 samples each.
| Compound | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|
| Benzene | 5 µg/L | 8 | 0 of 8 | not detected | 0 |
| Carbon tetrachloride | 5 µg/L | 8 | 0 of 8 | not detected | 0 |
| 1,2-dichloroethane | 5 µg/L | 8 | 0 of 8 | not detected | 0 |
| Trichloroethylene (TCE) | 5 µg/L | 8 | 0 of 8 | not detected | 0 |
| Tetrachloroethylene (PCE) | 5 µg/L | 8 | 0 of 8 | not detected | 0 |
| Vinyl chloride | 2 µg/L | 8 | 0 of 8 | not detected | 0 |
"Not detected" means the lab's result was below what its method can measure, not that the compound is absent. Non-detects count as zero in the highest-result column.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Bowling Green City.
Farm chemicals and metals
The water Tontogany Village buys is treated by Bowling Green City, so the results below are Bowling Green City's.
EPA's file holds results for all nine herbicides and metals it checked. Detected: atrazine in 1 of 25 samples, highest 0.82 µg/L (limit 3); barium in 8 of 8 samples, highest 16 µg/L (limit 2,000). Not detected: alachlor in 25 samples, 2,4-D in 3 samples, chromium in 8 samples, cadmium in 8 samples, mercury in 8 samples, selenium in 8 samples, thallium in 8 samples.
| Substance | Kind | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|---|
| Atrazine | Farm chemical | 3 µg/L | 25 | 1 of 25 | 0.82 µg/L | 0 |
| Alachlor | Farm chemical | 2 µg/L | 25 | 0 of 25 | not detected | 0 |
| 2,4-D | Farm chemical | 70 µg/L | 3 | 0 of 3 | not detected | 0 |
| Chromium | Metal | 100 µg/L | 8 | 0 of 8 | not detected | 0 |
| Cadmium | Metal | 5 µg/L | 8 | 0 of 8 | not detected | 0 |
| Barium | Metal | 2,000 µg/L | 8 | 8 of 8 | 16 µg/L | 0 |
| Mercury | Metal | 2 µg/L | 8 | 0 of 8 | not detected | 0 |
| Selenium | Metal | 50 µg/L | 8 | 0 of 8 | not detected | 0 |
| Thallium | Metal | 2 µg/L | 8 | 0 of 8 | not detected | 0 |
Non-detects count as zero in the highest-result column.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Bowling Green City.
Bacteria in the pipes
From 2012 to 2019, 0 of 96 routine total coliform samples taken in the distribution system at Tontogany Village tested positive (0%); in 2019, the last year on file, 0 of 12 did. E. coli was never found in the 13 samples tested for it.
A positive coliform test is a warning sign, not a violation by itself. E. coli is a sign that human or animal waste may have reached the water. Coliform counts are routine samples only; E. coli counts include repeat samples.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, distribution-system presence/absence tests for total coliform and E. coli.
Fluoride
The Ohio Department of Health's report to the CDC (My Water's Fluoride) says Tontogany Village buys its water from Bowling Green City, a system that adjusts the fluoride level to the recommended level for preventing tooth decay.
EPA's treatment table lists fluoridation among the steps at Bowling Green City, which treats the water Tontogany Village buys.
Measured fluoride: 1.06 mg/L on average leaving the plants of Bowling Green City, which supplies Tontogany Village, in 2019 (in the range dentists aim for); samples ran from 0.86 to 1.13 mg/L across 8 samples in 2012 to 2019.
The recommended level for preventing tooth decay is 0.7 mg/L; the federal limit is 4 mg/L. The treatment list is what each system registered with EPA and can lag a plant upgrade.
Source: CDC My Water's Fluoride (fluoridation status as reported by the Ohio Department of Health, fetched September 2026); EPA Safe Drinking Water Information System (SDWIS) treatment table; EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, entry-point fluoride samples.
Lithium
Lithium was not detected in 4 UCMR 5 samples at Bowling Green City, which supplies Tontogany Village, last sampled in 2024 (the method reports from 9 µg/L).
Lithium is not regulated. EPA's draft health reference level is 10 µg/L, and it occurs naturally in deep groundwater, so well systems in the northwest run highest.
Source: EPA UCMR 5 occurrence data (final release, August 2026), samples from 2023 to 2025.
Algal toxins
The water Tontogany Village buys is treated by Bowling Green City, so the results below are Bowling Green City's.
Ohio EPA tests for microcystin, a toxin that harmful algal blooms can release, in raw water at the intake and in treated water.
At the intake, microcystin was detected 25 times in 229 raw-water samples, across 7 bloom seasons (2016 to 2026); the highest raw-water result was 2.295 µg/L on July 24, 2018. The highest raw-water result since 2024 was 0.847 µg/L.
Microcystin was never detected in treated water (138 samples).
In all, 367 samples from 2016 to 2026, the latest on August 18, 2026.
| Water | Samples | Detections | Highest result |
|---|---|---|---|
| Raw water, at the intake | 229 | 25 | 2.295 µg/L |
| Treated water | 138 | 0 | not detected |
The ten-day advisory levels for treated water are 0.3 µg/L for children under six and 1.6 µg/L for everyone else. Any detection at the intake triggers more frequent testing until two clean weeks.
Source: Ohio EPA public water system harmful algal bloom monitoring, 2016 to present (HAB data, fetched September 2026).
How well the service area is mapped
EPA estimated the service area of Tontogany Village with a computer model rather than drawing it from the utility's map, so its edges are approximate.
Source: EPA Service Area Boundaries; resident estimate by this atlas from ZIP-code overlap.
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
EPA's own record for this system: Enforcement and Compliance History report for OH8702503 (EPA ECHO).
Notable facts: tontoganyohio.gov, bgohio.gov, tontoganyohio.gov
History: en.wikipedia.org, data.epa.gov, bgohio.gov, tontoganyohio.gov
Water quality: bgohio.gov
Planned work: tontoganyohio.gov
Capital projects: bgohio.gov
Rates: tontoganyohio.gov
Sewers: tontoganyohio.gov
Treatment: tontoganyohio.gov, bgohio.gov
Supply stress: tontoganyohio.gov, bgohio.gov, tontoganyohio.gov