Twin Rivers Water Corporation

Who runs it

EPA's record says Twin Rivers Water Corporation has 96 service connections and serves 245 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 513-367-2835.

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

How the water is treated

EPA's treatment table registers Twin Rivers Water Corporation with no treatment: the water is distributed as drawn.

Tri-Township Water Corp. (Indiana), which supplies it, is not in EPA's Ohio treatment table (it may be an out-of-state seller).

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 Twin Rivers Water Corporation since 2015.

EPA logs 1 violation of any kind since 2020: 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 Twin Rivers Water Corporation was 3 ppb, under both the current 15 ppb action level and the 10 ppb level that applies from 2027.

The highest result on file is 9.1 ppb, in the period ending December 2022.

EPA has 8 sampling periods on file for Twin Rivers Water Corporation 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 Twin Rivers Water Corporation sent EPA, 98 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

No PFAS result is on file for Twin Rivers Water Corporation and Tri-Township Water Corp. (Indiana), which supplies it,. Neither was not among the systems EPA sampled for its fifth national round (UCMR 5, every system serving 3,300 or more people and a random sample of smaller ones) and neither has no result in Ohio EPA's 2019 to 2021 survey.

Source: EPA UCMR 5 occurrence data (final release, August 2026); Ohio EPA statewide PFAS sampling, 2019 to 2021.

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 Twin Rivers Water Corporation's samples in 2019, the last year it was sampled, was 16.9 µg/L. The worst yearly average was 27.4 µg/L and the highest single sample was 27.4 µg/L, from 8 samples taken from 2012 to 2019.

For HAA5, the average in the last year sampled was 0 µg/L. The worst yearly average was 6.2 µg/L and the highest single sample was 6.2 µg/L, from 8 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).

Bacteria in the pipes

From 2012 to 2019, 0 of 97 routine total coliform samples taken in the distribution system at Twin Rivers Water Corporation tested positive (0%); in 2019, the last year on file, 0 of 12 did.

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 Twin Rivers Water Corporation buys its water from another system, 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.

EPA's treatment table lists no fluoridation step at Twin Rivers Water Corporation.

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 estimated the service area of Twin Rivers Water Corporation 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.