Water system
Miami Co-camp Troy
EPA ID OH5502503 · Miami County · 3,742 people served
Miami Co-camp Troy 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 Troy City

Did you know
- Troy's ten production wells sit under a public golf course (Miami Shores) and a city park, tapping the glacial-outwash sand and gravel buried along the ancient course of the Great Miami River.
- Troy does not fluoridate its water - twice, by referendum, residents voted against it. The 0.38 ppm of fluoride in the tap is what nature put in the aquifer and treatment left behind.
- Water rates in Troy have not changed since January 1, 2017, even as the city raised sewer rates for 2026.
- The plant has treatment capacity for 16 million gallons a day but averaged 3.66 million in 2025 and peaked at 5.62 million - roughly a third of what it could produce.
- Troy's own utility fee schedule contains an order-of-magnitude typo, describing 1,000 cubic feet of sewage as 'approximately 75,000 gallons.' It is about 7,480.
History6
- 1999Plant treatment expansion projects completed, raising future treatment capacity to 16 million gallons per day; emergency power added to the plant and both well fields.
- 2017A new 0.75 million gallon elevated tower on W. Stanfield Road is completed to improve fire flows and reliability in the Extra High Service pressure zone. Water rates set on 1/1/2017 are still the…
- 2022November: construction begins on a $11.8 million expansion of the city's wastewater treatment plant, after two years of planning.
- 2023Troy participates in the fifth round of the federal Unregulated Contaminant Monitoring Rule (UCMR 5), which includes PFAS sampling; results are available from the water department on request and are…
- 2024October: Phase 1 of the wastewater plant expansion goes online, raising capacity from 7 to 9 MGD, adding a third aeration tank and nutrient-removal technology, and moving the plant from Class III to…
- 2025Troy holds an unconditioned license to operate; sampling for 34 contaminants finds most non-detect. Sewer rates rise effective 1/1/2026 while water rates stay at their 2017 level.
Treatment & pressure
How it is treated
Ten production wells at Miami Shores Golf Course and Troy Community Park draw from the buried valley sand-and-gravel aquifer associated with the Great Miami River. Raw well water is pumped to the Troy Water Treatment Plant at 300 E. Staunton Road, where it is softened, clarified, disinfected and…
Source: troyohio.govtroyohio.govtroyohio.gov
Water pressure
No psi figures published. The city says only that after treatment water is 'maintained at a sufficient pressure for residential, commercial, industrial, and firefighting…
Source: troyohio.gov
What it costs
$6.14 per 1,000 gallons
Typical household bill about $23 a month for water.
CAUTION - Troy bills water by the cubic foot, not the gallon. Water rates, effective 1/1/2017 (Codified Ordinances 913.01) and unchanged since: inside city, 0-200 cf is covered by…
Source: troyohio.govtroyohio.gov
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total trihalomethanes (TTHM) Range 18.7-20.9 ppb. No violation. | 20.9 ppb | 80 | 2025 |
| Haloacetic acids (HAA5) Range <2.8-3.0 ppb. | 3.0 ppb | 60 | 2025 |
| Total chlorine Range 0.84-1.00 ppm. | 0.96 ppm | 4 (MRDL) | 2025 |
| Tetrachloroethylene (PCE) Range <0.07-0.2 ppb. Typical source: discharge from industrial chemical factories. | 0.2 ppb | 5 | 2025 |
| Trichloroethylene (TCE) Range <0.08-0.1 ppb. | 0.1 ppb | 5 | 2025 |
| cis-1,2-Dichloroethylene Range <0.04-0.4 ppb. | 0.4 ppb | 70 | 2025 |
| Fluoride Naturally occurring - Troy does not add fluoride. The city says naturally occurring fluoride persists through treatment… | 0.38 ppm | 4 | 2025 |
| Barium Erosion of natural deposits. | 0.0469 ppm | 2 | 2025 |
| Nitrate Well below the MCL. | 0.244 ppm | 10 | 2025 |
| Lead (90th percentile) 0 of 30 samples over the action level. Copper 90th percentile 0.0346 ppm, 0 of 30 over the 1.3 ppm action level. A… | 0.5 ppb | 15 (action… | 2025 |
Source: troyohio.govtroyohio.gov
EPA compliance record · Miami Co-camp Troy
Lead at the tap: 90th-percentile result 0.7 ppb in 2024 (action level 15 ppb).
EPA record: no health-based violations since 2015.
3 violations of any kind logged since 2020: 2 for required testing that was missed or reported late; 1 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 & plans6
Recent and current work
- Water treatment plant expansion to 16 MGD capacity · 1999 · completed
Treatment expansion projects completed in 1999 allowing future capacity up to 16 MGD; emergency power added to the plant and both well fields. No cost… - 0.75 MG elevated tower, W. Stanfield Road · 2017 · completed
Built to improve fire flows and system reliability in the Extra High Service pressure zone. No cost published. - Wastewater treatment plant expansion, Phase 1 · $12 million · 2024 · completed
Construction began November 2022, online October 2024. Raised capacity from 7 to 9 MGD, replaced components up to 50 years old, added a third aeration tank and… - Sewer rate increase effective 1/1/2026 · 2026 · completed
City sewer volume charge raised to $50.41 per 1,000 cubic feet with an $11.00 minimum on a 5/8-inch meter (Codified Ordinances 915.10); rural rates to $63.01.…
Source: troyohio.govtroyohio.govtroyohio.gov
Planned or needed
- Wastewater treatment plant expansion, Phase 2 · 2025 · planned
Announced in October 2024 as scheduled for completion in 2025; replaces outdated sludge-handling equipment. No separate cost published and no completion notice… - Capital Improvements Plan · planned
The city publishes a Capital Improvements Plan as an ArcGIS dashboard map rather than a document; individual water and sewer projects, costs and years could…
Source: troyohio.govtroyohio.gov
Supply stress
Troy's own water quality report states that the wellfield sits above a buried valley aquifer providing 'limited natural protection from contaminations infiltrating into the aquifer,' and that the aquifer supplying Troy is therefore 'considered to be highly susceptible to contamination.' The city runs a comprehensive wellhead protection…
Source: troyohio.govtroyohio.gov
Sewers
Sanitary
The City of Troy Wastewater Treatment Plant at 1400 Dye Mill Road is a conventional activated sludge plant run in a plug-flow valve configuration, discharging treated effluent to the Great Miami River under an NPDES permit. The city's page still lists a design capacity of 7 MGD with about 5.5 MGD average flow; the Phase 1 expansion that…
Storm
Not documented. No storm water utility, storm sewer rate or separate storm system description appears in Troy's master fee schedule or on the wastewater and utility pages reviewed.
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources.
Present in 2 ZIP codes
Serves
No ZIP code has Miami Co-camp Troy on record as its main water supplier.
Also present in 2 more ZIP codes
- 45373 · Troy2% of residents
- 45326 · Brown Township and Fletcher1% 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
Miami Co-camp Troy buys its water from Troy City.
No other system is on record buying water from Miami Co-camp Troy.
What the records show about Miami Co-camp Troy
Who runs it
EPA's record says Miami Co-camp Troy has 1,627 service connections and serves 3,742 people.
EPA classes it as a community water system, one that serves the same residents all year.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
Miami Co-camp Troy 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.
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 Miami Co-camp Troy since 2015.
EPA logs 3 violations of any kind since 2020: 2 for required testing that was missed or reported late; 1 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 2024, the 90th-percentile lead result at Miami Co-camp Troy was 0.7 ppb, under both the current 15 ppb action level and the 10 ppb level that applies from 2027.
EPA has 3 sampling periods on file for Miami Co-camp Troy since 2016, the first ending in 2018; 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 Miami Co-camp Troy sent EPA, 1,596 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 0 |
| Unknown material | 618 |
| Not lead | 978 |
| All lines | 1,596 |
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 Miami Co-camp Troy in 2023 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 Miami Co-camp Troy's samples in 2019, the last year it was sampled, was 24.5 µg/L. The worst yearly average was 30 µg/L and the highest single sample was 35.1 µg/L, from 15 samples taken from 2012 to 2019.
For HAA5, the average in the last year sampled was 7.8 µg/L. The worst yearly average was 7.8 µg/L and the highest single sample was 8.5 µg/L, from 15 samples.
| Byproduct | Limit | Latest yearly average | Worst yearly average | Highest sample | Samples |
|---|---|---|---|---|---|
| TTHM | 80 µg/L | 24.5 µg/L (2019) | 30 µg/L | 35.1 µg/L | 15 |
| HAA5 | 60 µg/L | 7.8 µg/L | 7.8 µg/L | 8.5 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 Miami Co-camp Troy 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 Miami Co-camp Troy 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 Miami Co-camp Troy 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, 2 of 406 routine total coliform samples taken in the distribution system at Miami Co-camp Troy tested positive (0.49%); in 2019, the last year on file, 0 of 48 did. E. coli was never found in the 6 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 Miami Co-camp Troy buys its water from Troy City, a system that has fluoride from natural sources, but at a level below what is recommended for preventing tooth decay, and does not adjust it. The level it reports is 0.43 mg/L.
EPA's treatment table lists no fluoridation step at Troy City, which treats the water Miami Co-camp Troy buys.
Measured fluoride: 0.25 mg/L on average leaving the plants of Troy City, which supplies Miami Co-camp Troy, 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 Miami Co-camp Troy, last sampled in 2023 (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 Miami Co-camp Troy for a household using 5,000 gallons a month at $465 a year, about $39 a month.
| Use | Water, per year | Sewer, per year |
|---|---|---|
| 2,500 gallons a month | $175 | not on file |
| 5,000 gallons a month | $465 | not on file |
| 8,000 gallons a month | $851 | not on file |
The survey lists it as “Miami County - Camp Troy”. 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 Miami Co-camp Troy 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 614 residents are inside the boundary, 16% of the 3,742 people Miami Co-camp Troy reports serving. With so much of its territory outside the polygon, part of the system shows on the map as private wells.
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.
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 OH5502503 (EPA ECHO).
