Middlefield Mobile Home Park

Who runs it

EPA's record says Middlefield Mobile Home Park has 154 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 440-251-9587.

Source: EPA Safe Drinking Water Information System (SDWIS), water system record.

How the water is treated

EPA's treatment table registers these steps for Middlefield Mobile Home Park: chlorine disinfection and iron and manganese removal.

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 1 health-based violation for Middlefield Mobile Home Park since 2015. Health-based means a contaminant above its legal limit or a required treatment step not carried out. It falls into 1 separate problem (one contaminant or rule in one year); the table lists it.

EPA logs 5 violations of any kind since 2020: 4 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 2025, the 90th-percentile lead result at Middlefield Mobile Home Park 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 5 ppb, in the period ending December 2018.

EPA has 8 sampling periods on file for Middlefield Mobile Home Park 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 Middlefield Mobile Home Park sent EPA, 150 lines are counted.

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

Ohio EPA's own statewide sampling tested 1 plant of Middlefield Mobile Home Park (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 Middlefield Mobile Home Park 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 Middlefield Mobile Home Park's samples in 2019, the last year it was sampled, was 3.5 µg/L. The worst yearly average was 146 µg/L and the highest single sample was 146 µg/L, from 20 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 0 µg/L. The worst yearly average was 55.1 µg/L and the highest single sample was 55.9 µg/L, from 20 samples.

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 8 samples was 0.18 mg/L (as nitrogen), in 2019, the last year sampled. No sample was over the limit of 10 mg/L. Nitrate above 10 is unsafe for infants.

Arsenic: the highest of 2 samples was 3 µg/L (limit 10); detections averaged 2.5; none over the limit.

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 2 samples each.

"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. Not detected: atrazine in 3 samples, alachlor in 3 samples, chromium in 2 samples, cadmium in 2 samples, barium in 2 samples, mercury in 2 samples, selenium in 2 samples, thallium in 2 samples.

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 96 routine total coliform samples taken in the distribution system at Middlefield Mobile Home Park tested positive (2.08%); in 2019, the last year on file, 1 of 12 did. E. coli was never found in the 54 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 Middlefield Mobile Home Park has fluoride from natural sources at the recommended level for preventing tooth decay. The level it reports is 0.77 mg/L.

EPA's treatment table lists no fluoridation step at Middlefield Mobile Home Park.

Measured fluoride: 0.77 mg/L on average at the plant's entry points in 2017 (in the range dentists aim for); samples ran from 0.69 to 0.77 mg/L across 2 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.

How well the service area is mapped

EPA drew the service area of Middlefield Mobile Home Park from parcel data.

Source: EPA Service Area Boundaries; resident estimate by this atlas from ZIP-code overlap.