Water system
College Corner Water
EPA ID OH6800311 · Preble County · 387 people served · owned by a local government
College Corner Water buys its water from Southwest Regional Water District.
The system's record
- Aquifer
- Great Miami Buried Valley Aquifer
- Active wells
- 7
- Serves
- 42,856 people · Butler County
- EPA ID
- OH0903912
About this area's water
Did you know
- College Corner sits directly on the Ohio-Indiana state line — the Ohio side (split between Preble and Butler counties) borders West College Corner, Indiana, across the line.
- The village takes its name from sitting in the 'College Township' the Ohio General Assembly set aside as the future home of Miami University.
Source: en.wikipedia.org
History4
- 1811/1837College Corner was settled in 1811 and formally laid out in 1837, named for its position in the 'College Township' the Ohio General Assembly set aside as the future site of Miami University —…
- pre-1994EPA facility records show College Corner's water-purchase connection was originally recorded under a wholesale source called 'SWR Dist South Plant' (PWSID OH0902812), deactivated around July 1994.
- 1994-presentCollege Corner currently purchases finished water from Southwest Regional Water District (PWSID OH0903912), per current EPA SDWIS facility records — this confirms the input's stated wholesaler.
- 2024-2025College Corner Water's own system carried three EPA violations tied to the Lead and Copper Rule family: one health-based Treatment Technique violation and two non-health reporting…
Treatment & pressure
How it is treated
College Corner Water buys finished water from Southwest Regional Water District (SWRWD), which draws groundwater from the Great Miami Buried Valley Aquifer and treats it at two plants: the W. Guy Metcalf plant (Ross Township, 3.6 MGD capacity, 3 production wells) and the North plant (St. Clair…
Source: cms9files.revize.comdata.epa.gov
Water pressure
Not published anywhere found — no pressure-zone or PSI data exists for College Corner Water or for SWRWD's distribution system to it.
What it costs
$7.05 per 1,000 gallons
This is Southwest Regional Water District's (the wholesale supplier's) own retail rate schedule, effective February 1, 2026, confirmed on swwater.org: $20.00/month base charge…
Source: swwater.org
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Nitrate (as Nitrogen) Range across SWRWD's North and W. Guy Metcalf plants; well below the limit, but Ohio EPA's 2003 source water assessment… | 1.26-2.23 ppm | 10 (MCL) | 2025 |
| Total Trihalomethanes (TTHM) Range across the two SWRWD plants (DS201/DS202); no violation. From SWRWD's 2025 CCR. | 11.6-17.3 ppb | 80 (MCL) | 2025 |
| Haloacetic Acids (HAA5) No violation. From SWRWD's 2025 CCR. | ND-4.8 ppb | 60 (MCL) | 2025 |
| Total Chlorine (residual disinfectant) From SWRWD's 2025 CCR. | 0.97-0.98 ppm | 4.0 (MRDL) | 2025 |
| Lead (90th percentile) 0 of 30 samples exceeded the action level. From SWRWD's 2025 CCR. | 1.3 ppb | 15 (Action… | 2025 |
| Copper (90th percentile) 0 of 30 samples exceeded the action level. From SWRWD's 2025 CCR. | 0.566 ppm | 1.3 (Action… | 2025 |
| Fluoride From SWRWD's 2025 CCR. | 1.18-1.21 ppm | 4 (MCL) | 2025 |
| Barium From SWRWD's 2025 CCR. | 0.0166-0.0334 ppm | 2 (MCL) | 2023 |
| Combined Radium Reported for the North plant only. From SWRWD's 2025 CCR. | 1.15 pCi/L | 5 (MCL) | 2023 |
| PFBS (unregulated, UCMR5) Only PFAS substance detected under UCMR5 monitoring; classified as a contaminant of emerging concern. From SWRWD's 2025… | ND-0.00309 ppb | no federal MCL… | 2023 |
Source: cms9files.revize.com
EPA compliance record
Lead at the tap: 90th-percentile result 1.6 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
EPA compliance record · Southwest Regional Water District (treats the water)
Lead at the tap: 90th-percentile result 1.3 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
Projects & plans1
Recent and current work
- Corrosion control study / phosphoric acid inhibitor (SWRWD) · 2020 · completed
SWRWD completed a voluntary, Ohio EPA-approved corrosion control study in 2020, adding phosphoric acid as a system-wide corrosion inhibitor; applies to College…
Source: cms9files.revize.com
Supply stress
College Corner depends entirely on purchased water from Southwest Regional Water District, drawn from the Great Miami Buried Valley Aquifer, which Ohio EPA determined in 2003 to be highly susceptible to contamination given the aquifer's productivity and nearby potential contaminant sources (per SWRWD's 2025 CCR, which cites…
Source: cms9files.revize.comdata.epa.gov
Sewers
Storm
Not documented anywhere found.
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
- 45003 · College Corner41% 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
College Corner Water buys its water from Southwest Regional Water District.
No other system is on record buying water from College Corner Water.
What the records show about College Corner Water
Who runs it
EPA's record describes College Corner Water as owned by a local government. It has 204 service connections and serves 387 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 513-524-2710.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
College Corner Water buys water that Southwest Regional Water District treats first, so the steps that count are the seller's. EPA's treatment table registers these steps for Southwest Regional Water District: corrosion control, chlorine disinfection, fluoridation, ion-exchange softening, lime softening, and sand or media filtration.
College Corner Water adds nothing of its own on that table.
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 College Corner Water since 2015.
EPA logs no violations of any kind for College Corner Water since 2020.
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 College Corner Water was 1.6 ppb, under both the current 15 ppb action level and the 10 ppb level that applies from 2027.
The highest result on file is 4.2 ppb, in the period ending June 2021.
EPA has 6 sampling periods on file for College Corner Water since 2016, the first ending in 2020; 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 College Corner Water sent EPA, 540 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 0 |
| Unknown material | 540 |
| Not lead | 0 |
| All lines | 540 |
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 College Corner Water buys is treated by Southwest Regional Water District, so the results below are Southwest Regional Water District's.
EPA's fifth national round of testing (UCMR 5) took 5 samples of the water entering the pipes of Southwest Regional Water District in 2023 and measured 29 PFAS.
PFOA and PFOS were not detected, against a federal limit of 4 ng/L each.
The highest PFAS result was PFBS 3.1 ng/L.
The system reported potential PFAS sources near its supply.
Ohio EPA's own statewide sampling tested 2 plants of Southwest Regional Water District (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 2 plants of Southwest Regional Water District as sampled, most recently May 2026.
| 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.
Nitrate, arsenic and radioactivity
The water College Corner Water buys is treated by Southwest Regional Water District, so the results below are Southwest Regional Water District's.
Nitrate: the highest of 16 samples was 3 mg/L (as nitrogen) in 2013; in 2019, the last year sampled, the highest was 2.27 mg/L. 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) | 16 | 3 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.
EPA's file lumps the entry-point samples of all 2 plants of Southwest Regional Water District together, so a result over a limit may come from a plant that serves a different part of town.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Southwest Regional Water District.
Solvents and fuels
The water College Corner Water buys is treated by Southwest Regional Water District, so the results below are Southwest Regional Water District'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 4 samples each.
| Compound | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|
| Benzene | 5 µg/L | 4 | 0 of 4 | not detected | 0 |
| Carbon tetrachloride | 5 µg/L | 4 | 0 of 4 | not detected | 0 |
| 1,2-dichloroethane | 5 µg/L | 4 | 0 of 4 | not detected | 0 |
| Trichloroethylene (TCE) | 5 µg/L | 4 | 0 of 4 | not detected | 0 |
| Tetrachloroethylene (PCE) | 5 µg/L | 4 | 0 of 4 | not detected | 0 |
| Vinyl chloride | 2 µg/L | 4 | 0 of 4 | 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 Southwest Regional Water District.
Farm chemicals and metals
The water College Corner Water buys is treated by Southwest Regional Water District, so the results below are Southwest Regional Water District's.
EPA's file holds results for all nine herbicides and metals it checked. Detected: barium in 3 of 4 samples, highest 40 µg/L (limit 2,000). Not detected: atrazine in 6 samples, alachlor in 6 samples, 2,4-D in 6 samples, chromium in 7 samples, cadmium in 7 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 | 6 | 0 of 6 | not detected | 0 |
| Alachlor | Farm chemical | 2 µg/L | 6 | 0 of 6 | not detected | 0 |
| 2,4-D | Farm chemical | 70 µg/L | 6 | 0 of 6 | not detected | 0 |
| Chromium | Metal | 100 µg/L | 7 | 0 of 7 | not detected | 0 |
| Cadmium | Metal | 5 µg/L | 7 | 0 of 7 | not detected | 0 |
| Barium | Metal | 2,000 µg/L | 4 | 3 of 4 | 40 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.
EPA's file lumps the entry-point samples of all 2 plants of Southwest Regional Water District together, so a result over a limit may come from a plant that serves a different part of town.
Source: EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, finished water of Southwest Regional Water District.
Fluoride
The Ohio Department of Health's report to the CDC (My Water's Fluoride) says College Corner Water buys its water from Southwest Regional Water District, 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 Southwest Regional Water District, which treats the water College Corner Water buys.
Measured fluoride: 0.99 mg/L on average leaving the plants of Southwest Regional Water District, which supplies College Corner Water, in 2017 (in the range dentists aim for); samples ran from 0.89 to 1 mg/L across 4 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 Southwest Regional Water District, which supplies College Corner Water, 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.
How well the service area is mapped
EPA estimated the service area of College Corner Water 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 — 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 OH6800311 (EPA ECHO).
Notable facts: en.wikipedia.org
History: en.wikipedia.org, data.epa.gov, data.epa.gov
Water quality: cms9files.revize.com
Capital projects: cms9files.revize.com
Rates: swwater.org
Treatment: cms9files.revize.com, data.epa.gov
Supply stress: cms9files.revize.com, data.epa.gov
