Water system
Maysville Regional Water
EPA ID OH6001411 · Muskingum County · 6,540 people served
Maysville Regional Water buys its water from Muskingum County Water - Se.
The system's record
- Aquifer
- Muskingum River valley sand-and-gravel aquifer
- Water bodies
- Muskingum River
- Active wells
- 5
- Serves
- 21,540 people · Muskingum County
- EPA ID
- OH6000412
About this area's water
Did you know
- Maysville Regional Water is a private district with no website: EPA's national inventory lists its contact as a P.O. box in White Cottage and a Gmail address.
- One of its former drinking water sources was literally a flooded quarry - the Frazers Quarry intake, retired in February 2026 along with the Kent Run intake.
- The system has been cited for exceeding the trihalomethane limit in 39 separate quarters since 2014, and was still in violation as of the first quarter of 2026.
- In February 2026 the district switched its own treatment plant off for good and became a pure reseller, buying every gallon from Muskingum County's wells north of Duncan Falls.
History5
- 2009Maysville Regional Water's Lake Isabella surface intake is deactivated, leaving the Kent Run and Frazers Quarry intakes as the district's raw water sources (EPA SDWIS facility record).
- 2014The first of a long run of quarterly TTHM maximum contaminant level violations is recorded (Q3 2014, 0.094 mg/L against an 0.080 mg/L MCL).
- 2018Ohio EPA and the district enter negotiated Director's Final Findings and Orders over the system's compliance problems.
- 2024Ohio EPA issues amended Director's Final Findings and Orders and a conditioned license to operate for the system.
- 2026On February 12 the district's Kent Run and Frazers Quarry intakes, its treatment plant pumps and its finished-water clearwells are all deactivated; Maysville switches entirely to purchased…
Treatment & pressure
How it is treated
None of its own any more. Until February 2026 Maysville Regional Water treated its own surface water drawn from the Kent Run and Frazers Quarry intakes (and, until 2009, Lake Isabella) at its own plant. Since 2026-02-12 those intakes, the intermediate and high-service pumps and the finished-water…
Source: data.epa.govdata.epa.govmuskingumcountyoh.gov
Water pressure
Not published. This is a private district with no website.
Source: data.epa.gov
What it costs
Not published. Maysville Regional Water District has no website - EPA's national inventory lists only a P.O. box in White Cottage, a phone number and a Gmail address - and no rate…
Source: data.epa.govmuskingumcountyoh.govmuskingumcountyoh.gov
Water quality & impurities2
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| Total trihalomethanes (TTHM) Open, unresolved MCL violations for four consecutive quarters: 0.081 mg/L (Q2 2025), 0.099 (Q3 2025), 0.117 (Q4 2025)… | 81-129 ppb | 80 | 2025-202… |
| Total trihalomethanes (TTHM), historical 35 earlier quarterly MCL violations, peaking at 0.132 mg/L in Q4 2015 and Q1 2016. The system returned to compliance in… | up to 132 ppb | 80 | 2014-202… |
Source: data.epa.govdata.epa.gov
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2026 (action level 15 ppb).
EPA health-based violations since 2015:
- 2026Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.129 MG/L (limit 0.08 MG/L) · known
- 2025Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.117 MG/L (limit 0.08 MG/L) · known
- 2024Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.102 MG/L (limit 0.08 MG/L) · returned to compliance
- 2024Lead and Copper Rule Revisions · lead service line inventory missing or incomplete (a records requirement, not a lead test result) · returned to compliance
- 2023Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.129 MG/L (limit 0.08 MG/L) · returned to compliance
- 2022Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.126 MG/L (limit 0.08 MG/L) · returned to compliance
- 2021Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.113 MG/L (limit 0.08 MG/L) · returned to compliance
- 2020Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.0899 MG/L (limit 0.08 MG/L) · returned to compliance
5 more problems in this period not listed. EPA's count of 38 includes 25 repeat quarterly violations of the problems listed.
26 violations of any kind logged since 2020: 7 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records); 19 health-based.
EPA compliance record · Muskingum County Water - Se (treats the water)
Lead at the tap: 90th-percentile result 1 ppb in 2026 (action level 15 ppb).
EPA health-based violations since 2015:
- 2017Total trihalomethanes (TTHM) · above the legal limit on average · measured 0.081 MG/L (limit 0.08 MG/L) · returned to compliance
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).
Projects & plans1
Recent and current work
- Shutdown of the Maysville surface-water treatment plant and switch to purchased county groundwater · 2026 · completed
EPA SDWIS deactivated the Kent Run and Frazers Quarry intakes, the plant's intermediate and high-service pumps and the finished-water clearwells on 2026-02-12…
Supply stress
Not a supply-quantity problem but a supply-quality and single-point-of-failure problem. The district's own reservoir and quarry sources produced water with such persistent disinfection byproducts that it has been in and out of TTHM violation since 2014 and is in open violation now, under Ohio EPA findings and orders. Having retired its…
Sewers
Sanitary
Muskingum County's sewer department describes the Maysville area as served by a septic tank effluent system: a septic tank at each customer's site removes settleables and floatables, and the effluent is collected in small-diameter lines laid at flatter slopes. County-wide the sewer system serves more than 5,400 homes and businesses over…
Storm
Not published.
Source: muskingumcountyoh.gov
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources.
Main supplier in 3 ZIP codes
Serves
Main water supplier in 4 ZIP codes
- 43738 · Fultonham100% of residents
- 43791 · Newton Township and White Cottage89% of residents
- 43735 · Newton Township and East Fultonham82% of residents
- 43760 · Madison Township and Mount Perry2% of residents
Also present in 2 more ZIP codes
- 43777 · Roseville6% of residents
- 43701 · Zanesville3% 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
Maysville Regional Water buys its water from Muskingum County Water - Se.
No other system is on record buying water from Maysville Regional Water.
What the records show about Maysville Regional Water
Who runs it
EPA's record says Maysville Regional Water has 2,414 service connections and serves 6,540 people.
EPA classes it as a community water system, one that serves the same residents all year.
EPA's record says it has substantially implemented source water protection under Ohio's program, dating the program from 2023. Its office telephone on EPA's record is 740-849-2428.
Source: EPA Safe Drinking Water Information System (SDWIS), water system record.
How the water is treated
Maysville Regional Water buys water that Muskingum County Water - Se treats first, so the steps that count are the seller's. EPA's treatment table registers these steps for Muskingum County Water - Se: corrosion control, chlorine disinfection, iron and manganese removal, and fluoridation.
Maysville Regional 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 counts 38 health-based violations for Maysville Regional Water since 2015. Health-based means a contaminant above its legal limit or a required treatment step not carried out. They fall into 13 separate problems (one contaminant or rule in one year); the table lists the 8 most recent.
EPA logs a violation for each compliance period a problem lasts, so the count of 38 includes 25 repeat entries of the problems listed.
EPA logs 26 violations of any kind since 2020: 7 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records); 19 health-based.
| Year | Contaminant or rule | Kind | Measured | Limit | Status in EPA's record |
|---|---|---|---|---|---|
| 2026 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.129 mg/L | 0.08 mg/L | known |
| 2025 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.117 mg/L | 0.08 mg/L | known |
| 2024 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.102 mg/L | 0.08 mg/L | returned to compliance |
| 2024 | Lead and Copper Rule Revisions | lead service line inventory missing or incomplete (a records requirement, not a lead test result) | not on file | not on file | returned to compliance |
| 2023 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.129 mg/L | 0.08 mg/L | returned to compliance |
| 2022 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.126 mg/L | 0.08 mg/L | returned to compliance |
| 2021 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.113 mg/L | 0.08 mg/L | returned to compliance |
| 2020 | Total trihalomethanes (TTHM) | above the legal limit on average | 0.0899 mg/L | 0.08 mg/L | returned to compliance |
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 June 2026, the 90th-percentile lead result at Maysville Regional Water 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 11 sampling periods on file for Maysville Regional Water 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 Maysville Regional Water sent EPA, 2,432 lines are counted.
| Material | Lines |
|---|---|
| Lead | 0 |
| Galvanized, needing replacement | 0 |
| Unknown material | 0 |
| Not lead | 2,432 |
| All lines | 2,432 |
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 4 samples of the water entering the pipes of Maysville Regional Water in 2023 and measured 29 PFAS.
The highest PFOA or PFOS result, 4 ng/L, is at or above the federal limit of 4 ng/L that EPA set in 2024. Systems have until 2029 to comply, and in May 2026 EPA proposed letting systems apply for two more years. One sample over the limit is not a violation: compliance is judged on a running annual average.
The highest PFAS result was PFOA 4 ng/L.
Ohio EPA's own statewide sampling tested 1 plant of Maysville Regional Water (latest sample September 2020). Not one of the six PFAS tested (PFOA, PFOS, PFHxS, PFNA, GenX and PFBS) was detected.
| Compound | Highest result | Federal limit |
|---|---|---|
| PFOA | 4 ng/L | 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 Maysville Regional Water's samples in 2019, the last year it was sampled, was 82.1 µg/L. The worst yearly average was 124.2 µg/L and the highest single sample was 179.2 µg/L, from 62 samples taken from 2012 to 2019. A yearly average over 80 is not itself a violation, because compliance is judged site by site.
For HAA5, the average in the last year sampled was 20.9 µg/L. The worst yearly average was 36.4 µg/L and the highest single sample was 58 µg/L, from 62 samples.
| Byproduct | Limit | Latest yearly average | Worst yearly average | Highest sample | Samples |
|---|---|---|---|---|---|
| TTHM | 80 µg/L | 82.1 µg/L (2019) | 124.2 µg/L | 179.2 µg/L | 62 |
| HAA5 | 60 µg/L | 20.9 µg/L | 36.4 µg/L | 58 µg/L | 62 |
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
Nitrate: the highest of 97 samples was 1.16 mg/L (as nitrogen) in 2013; in 2019, the last year sampled, the highest was 0.78 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) | 97 | 1.16 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.
Solvents and fuels
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 9 samples each.
| Compound | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|
| Benzene | 5 µg/L | 9 | 0 of 9 | not detected | 0 |
| Carbon tetrachloride | 5 µg/L | 9 | 0 of 9 | not detected | 0 |
| 1,2-dichloroethane | 5 µg/L | 9 | 0 of 9 | not detected | 0 |
| Trichloroethylene (TCE) | 5 µg/L | 9 | 0 of 9 | not detected | 0 |
| Tetrachloroethylene (PCE) | 5 µg/L | 9 | 0 of 9 | not detected | 0 |
| Vinyl chloride | 2 µg/L | 9 | 0 of 9 | 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.
Farm chemicals and metals
EPA's file holds results for 8 of the nine herbicides and metals it checked. Detected: atrazine in 1 of 8 samples, highest 0.18 µg/L (limit 3); barium in 7 of 8 samples, highest 53.6 µg/L (limit 2,000); selenium in 1 of 8 samples, highest 6.36 µg/L (limit 50). Not detected: alachlor, chromium, cadmium, mercury, and thallium, in 8 samples each.
| Substance | Kind | Limit | Samples | Detected in | Highest result | Samples over limit |
|---|---|---|---|---|---|---|
| Atrazine | Farm chemical | 3 µg/L | 8 | 1 of 8 | 0.18 µg/L | 0 |
| Alachlor | Farm chemical | 2 µg/L | 8 | 0 of 8 | 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 | 7 of 8 | 53.6 µg/L | 0 |
| Mercury | Metal | 2 µg/L | 8 | 0 of 8 | not detected | 0 |
| Selenium | Metal | 50 µg/L | 8 | 1 of 8 | 6.36 µg/L | 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.
Bacteria in the pipes
From 2012 to 2019, 2 of 651 routine total coliform samples taken in the distribution system at Maysville Regional Water tested positive (0.31%); in 2019, the last year on file, 0 of 84 did. E. coli was never found in the 12 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 Maysville Regional Water adjusts the fluoride level to the recommended level for preventing tooth decay.
EPA's treatment table lists fluoridation among the steps at Muskingum County Water - Se, which treats the water Maysville Regional Water buys.
Measured fluoride: 0.82 mg/L on average at the plant's entry points in 2019 (in the range dentists aim for); samples ran from 0.74 to 1.01 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 Maysville Regional 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.
Algal toxins
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 142 times in 349 raw-water samples, across 10 bloom seasons (2016 to 2025); the highest raw-water result was 8.76 µg/L on December 16, 2020. The highest raw-water result since 2024 was 0.298 µg/L.
In treated water, microcystin was detected 1 time; the highest result was 0.246 µg/L (October 2023), below the 0.3 µg/L advisory level.
In all, 713 samples from 2016 to 2026, the latest on February 11, 2026.
| Water | Samples | Detections | Highest result |
|---|---|---|---|
| Raw water, at the intake | 349 | 142 | 8.76 µg/L |
| Treated water | 364 | 1 | 0.246 µg/L |
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
The service area drawn on the map for Maysville Regional Water comes from the utility's own map.
Counting the people who live in the ZIP codes it overlaps, this atlas estimates 2,741 residents are inside the boundary, 42% of the 6,540 people Maysville Regional Water 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.
Photograph
On the map
Show this system's territory on the map — 6 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 OH6001411 (EPA ECHO).
Notable facts: data.epa.gov, data.epa.gov, data.epa.gov
History: data.epa.gov, data.epa.gov, data.epa.gov, muskingumcountyoh.gov
Water quality: data.epa.gov, data.epa.gov
Water pressure: data.epa.gov
Capital projects: data.epa.gov, muskingumcountyoh.gov, data.epa.gov
Rates: data.epa.gov, muskingumcountyoh.gov, muskingumcountyoh.gov
Sewers: muskingumcountyoh.gov
Treatment: data.epa.gov, data.epa.gov, muskingumcountyoh.gov, data.epa.gov
Supply stress: data.epa.gov, data.epa.gov, data.epa.gov
