Water system
West Milton Village
EPA ID OH5501711 · Miami County · 4,890 people served · owned by a local government
West Milton Village buys its water from Troy City.
The system's record
- Aquifer
- Great Miami Buried Valley Aquifer
- Active wells
- 10
- Serves
- 26,305 people · Miami County
- EPA ID
- OH5501612
About this area's water
Did you know
- West Milton is named for the English poet John Milton, and was plain 'Milton' for five years (1824-1829) before the 'West' was added.
- The village buys every gallon it sells from the City of Troy, yet still operates what it calls the West Milton Water Treatment Plant - it pumped about 120.02 million gallons in 2025 while adding fluoride and a second…
- Troy's wellfield sits over a buried valley aquifer that Ohio EPA rates highly susceptible to contamination, and West Milton's 2025 tap water carried trace tetrachloroethylene (0.2 ppb) and trichloroethylene (0.1 ppb) -…
History6
- 1807Initial settlement of what became West Milton.
- 1824Post office established under the name 'Milton.'
- 1829Name changed to West Milton; the community is named for English poet John Milton.
- 1834Village incorporated (Wikipedia gives the date as approximate).
- 2025Village facility pumped about 120.02 million gallons of purchased Troy water and held an unconditioned Ohio EPA license to operate.
- 2025Village advertised sealed bids (Oct 2025, due Nov 13, 2025) for its Sanitary Sewer Trunk Line Replacement Project.
Source: en.wikipedia.orgstorage.googleapis.comwestmiltonohio.gov
Treatment & pressure
How it is treated
West Milton owns no source of supply: it buys finished drinking water from the City of Troy, whose wellfield draws on the Great Miami Buried Valley Aquifer. Within its own system the village adds fluoride for dental health and additional chlorine to hold a disinfectant residual across the…
Source: storage.googleapis.comwestmiltonohio.gov
Water pressure
Not published. Neither the village website nor the 2025 CCR states a distribution system pressure.
What it costs
No water rate schedule is published. The village's own fee-schedule page (westmiltonohio.gov/feeschedule) reads 'TBD', and the utilities, utility-forms, FAQ…
Source: westmiltonohio.govwestmiltonohio.govwestmiltonohio.gov
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total trihalomethanes (TTHM) Highest single detection is about 55% of the MCL; disinfection by-product formed in the purchased Troy water plus West… | 43.7 (range… ppb | 80 ppb MCL | 2025 |
| Haloacetic acids (HAA5) | <6.0 (range… ppb | 60 ppb MCL | 2025 |
| Total chlorine CCR prints the average as 0.924167 ppm. | 0.92 (range… ppm | 4 ppm MRDL | 2025 |
| Fluoride West Milton fluoridates the purchased water. | 1.23 (range… ppm | 4 ppm MCL | 2025 |
| Barium | 0.0469 ppm | 2 ppm MCL | 2025 |
| Tetrachloroethylene (PCE) Trace industrial solvent detection in the Troy-sourced water; 4% of the MCL. | 0.2 (range… ppb | 5 ppb MCL | 2025 |
| Trichloroethylene (TCE) Trace industrial solvent detection; 2% of the MCL. | 0.1 (range… ppb | 5 ppb MCL | 2025 |
| cis-1,2-Dichloroethylene Common breakdown product of PCE/TCE. | 0.4 (range… ppb | 70 ppb MCL | 2025 |
| Lead 0 of 20 samples above the action level. | 0 (90th… ppb | 15 ppb action… | 2025 |
| Copper 0 of 20 samples above the action level. | 0.057 (90th… ppm | 1.3 ppm action… | 2025 |
Source: storage.googleapis.com
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 · Troy City (treats the water)
Lead at the tap: 90th-percentile result 0.5 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
Projects & plans3
Recent and current work
- Sanitary Sewer Trunk Line Replacement Project · 2026 · under construction
Listed as a 2026 utilities project; sealed bids advertised October 2025, due November 13, 2025. No cost is published by the village.
Source: westmiltonohio.govwestmiltonohio.gov
Planned or needed
- Wastewater Treatment Plant (WWTP) Replacement · 2027-2031 · planned
Listed on the village projects page; an RFQ for engineering services on wastewater collection and treatment improvements was issued February 2026 (system… - Water Tower Repainting · 2027 · planned
Listed on the village projects page. No cost is published.
Supply stress
The vulnerability is in the source, not the supply volume. West Milton's 2025 CCR states that Troy's wellfield sits above a buried valley aquifer that 'provides limited natural protection' from infiltrating contamination, and that the aquifer supplying Troy is therefore considered highly susceptible to contamination; Troy runs a wellhead…
Source: storage.googleapis.com
Sewers
Sanitary
Village-operated, not county. The village utilities department runs its own wastewater treatment plant 24 hours a day; the February 2026 wastewater RFQ puts the collection and treatment system at roughly 2,200 wastewater customers for a population of about 4,700. A sanitary sewer trunk line replacement is underway and a full WWTP…
Storm
The village utilities department covers stormwater alongside water and wastewater ('Water, Wastewater, Stormwater'). Whether the storm system is fully separated from sanitary sewers, and whether a stormwater fee is charged, is not published on the village…
Source: westmiltonohio.govwestmiltonohio.govwestmiltonohio.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
- 45383 · West Milton66% 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
West Milton Village buys its water from Troy City.
No other system is on record buying water from West Milton Village.
What the records show about West Milton Village
Who runs it
EPA's record describes West Milton Village as owned by a local government. It has 2,327 service connections and serves 4,890 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 937-698-1500.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
West Milton Village buys water that Troy City treats first, so the steps that count are the seller's. EPA's treatment table registers these steps for Troy City: corrosion control, coagulation and settling, chlorine disinfection, lime softening, and sand or media filtration.
West Milton Village itself also registers: fluoridation.
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 West Milton 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 West Milton 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.
The highest result on file is 2.1 ppb, in the period ending December 2016.
EPA has 4 sampling periods on file for West Milton Village since 2016, the first ending in 2016; 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 West Milton Village sent EPA, 2,168 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 132 |
| Unknown material | 939 |
| Not lead | 1,097 |
| All lines | 2,168 |
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
EPA's fifth national round of testing (UCMR 5) took 2 samples of the water entering the pipes of West Milton Village in 2025 and measured 29 PFAS. No PFAS was detected, PFOA and PFOS (federal limit 4 ng/L each) among them.
Ohio EPA's own statewide sampling tested 1 plant of Troy City (latest sample July 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 Troy City as sampled, most recently May 2026.
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 West Milton Village's samples in 2019, the last year it was sampled, was 43.5 µg/L. The worst yearly average was 46.6 µg/L and the highest single sample was 49.6 µg/L, from 15 samples taken from 2012 to 2019.
For HAA5, the average in the last year sampled was 7.4 µg/L. The worst yearly average was 13.1 µg/L and the highest single sample was 13.1 µg/L, from 15 samples.
| Byproduct | Limit | Latest yearly average | Worst yearly average | Highest sample | Samples |
|---|---|---|---|---|---|
| TTHM | 80 µg/L | 43.5 µg/L (2019) | 46.6 µg/L | 49.6 µg/L | 15 |
| HAA5 | 60 µg/L | 7.4 µg/L | 13.1 µg/L | 13.1 µg/L | 15 |
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 West Milton Village buys is treated by Troy City, so the results below are Troy City's.
Nitrate: the highest of 10 samples was 0.46 mg/L (as nitrogen) in 2012; in 2019, the last year sampled, nitrate was not detected. No sample was over the limit of 10 mg/L. Nitrate above 10 is unsafe for infants.
Arsenic was not detected in 4 samples (limit 10 µg/L).
| Contaminant | Samples | Highest result | Limit | Samples over limit |
|---|---|---|---|---|
| Nitrate (as nitrogen) | 10 | 0.46 mg/L | 10 mg/L | 0 |
| Arsenic | 4 | 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 Troy City.
Solvents and fuels
The water West Milton Village buys is treated by Troy City, so the results below are Troy City's.
EPA's file holds results for all six solvent and fuel compounds it checked. tetrachloroethylene (PCE) was detected in 1 of 41 samples, highest 0.87 µg/L (limit 5). Benzene, carbon tetrachloride, 1,2-dichloroethane, trichloroethylene, and vinyl chloride were not detected in 41 samples each.
| Compound | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|
| Benzene | 5 µg/L | 41 | 0 of 41 | not detected | 0 |
| Carbon tetrachloride | 5 µg/L | 41 | 0 of 41 | not detected | 0 |
| 1,2-dichloroethane | 5 µg/L | 41 | 0 of 41 | not detected | 0 |
| Trichloroethylene (TCE) | 5 µg/L | 41 | 0 of 41 | not detected | 0 |
| Tetrachloroethylene (PCE) | 5 µg/L | 41 | 1 of 41 | 0.87 µg/L | 0 |
| Vinyl chloride | 2 µg/L | 41 | 0 of 41 | 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 Troy City.
Farm chemicals and metals
The water West Milton Village buys is treated by Troy City, so the results below are Troy City's.
EPA's file holds results for 8 of the nine herbicides and metals it checked. Detected: barium in 2 of 4 samples, highest 24 µg/L (limit 2,000). Not detected: atrazine in 3 samples, alachlor in 3 samples, chromium in 5 samples, cadmium in 5 samples, mercury in 4 samples, selenium in 4 samples, thallium in 4 samples.
| Substance | Kind | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|---|
| Atrazine | Farm chemical | 3 µg/L | 3 | 0 of 3 | not detected | 0 |
| Alachlor | Farm chemical | 2 µg/L | 3 | 0 of 3 | not detected | 0 |
| Chromium | Metal | 100 µg/L | 5 | 0 of 5 | not detected | 0 |
| Cadmium | Metal | 5 µg/L | 5 | 0 of 5 | not detected | 0 |
| Barium | Metal | 2,000 µg/L | 4 | 2 of 4 | 24 µg/L | 0 |
| Mercury | Metal | 2 µg/L | 4 | 0 of 4 | not detected | 0 |
| Selenium | Metal | 50 µg/L | 4 | 0 of 4 | not detected | 0 |
| Thallium | Metal | 2 µg/L | 4 | 0 of 4 | 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 Troy City.
Bacteria in the pipes
From 2012 to 2019, 0 of 472 routine total coliform samples taken in the distribution system at West Milton Village tested positive (0%); in 2019, the last year on file, 0 of 61 did. E. coli was never found in the 409 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 West Milton Village adjusts the fluoride level to the recommended level for preventing tooth decay.
EPA's treatment table lists no fluoridation step at Troy City, which treats the water West Milton Village buys.
West Milton Village itself also registers a fluoridation step.
Measured fluoride: 0.25 mg/L on average leaving the plants of Troy City, which supplies West Milton Village, in 2018 (too little to protect teeth); samples ran from 0.25 to 0.46 mg/L across 6 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 2 UCMR 5 samples at West Milton Village, last sampled in 2025 (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.
Water and sewer bills
Ohio EPA's 2023 rate survey puts the water bill at West Milton Village for a household using 5,000 gallons a month at $721 a year, about $60 a month.
The sewer bill in the same survey is $565 a year at 5,000 gallons a month.
| Use | Water, per year | Sewer, per year |
|---|---|---|
| 2,500 gallons a month | $502 | $328 |
| 5,000 gallons a month | $721 | $565 |
| 8,000 gallons a month | $983 | $849 |
The survey lists it as “West Milton”. These are inside-city rates and annual bills at the use shown.
Source: Ohio EPA 2023 Sewer and Water Rate Survey (Ohio State University, May 2025).
How well the service area is mapped
EPA estimated the service area of West Milton Village with a computer model rather than drawing it from the utility's map, so its edges are approximate.
Counting the people who live in the ZIP codes it overlaps, this atlas estimates 4,535 residents are inside the boundary, 93% of the 4,890 people West Milton Village reports serving.
The resident count is an estimate from 2020 Census ZIP-code populations, not a count of customers.
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 — 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
EPA's own record for this system: Enforcement and Compliance History report for OH5501711 (EPA ECHO).
Notable facts: en.wikipedia.org, storage.googleapis.com
History: en.wikipedia.org, storage.googleapis.com, westmiltonohio.gov, westmiltonohio.gov
Water quality: storage.googleapis.com
Planned work: westmiltonohio.gov, westmiltonohio.gov
Capital projects: westmiltonohio.gov, westmiltonohio.gov
Rates: westmiltonohio.gov, westmiltonohio.gov, westmiltonohio.gov, westmiltonohio.gov
Sewers: westmiltonohio.gov, westmiltonohio.gov, westmiltonohio.gov
Treatment: storage.googleapis.com, westmiltonohio.gov
Supply stress: storage.googleapis.com
