Water system
Gallia Co. Rural Water Association
EPA ID OH2700012 · Gallia County · 20,995 people served
Gallia Co. Rural Water Association treats its own water from Ohio River Valley Aquifer (10 wells, Gallipolis/Addison Twp.).
The system's record
- Aquifer
- Ohio River Valley Aquifer
- Active wells
- 10
- Serves
- 20,995 people · Gallia County
- EPA ID
- OH2700012
Groundwater from 10 wells in two well fields (susceptibility rated high and moderate) drawing on the Ohio River valley buried aquifer, not directly from the Ohio River.
About this area's water

Did you know
- One rural water association covers roughly 500 square miles and 19 townships across five counties -- Gallia, Jackson, Meigs, Lawrence and Vinton -- with about 700 miles of pipe and 10,200 taps serving an estimated…
- Its 37 tanks hold more than 7.7 million gallons between them -- over four days of the system's average daily production of 1.873 million gallons.
- During the 2023 East Palestine derailment scare the utility had to publicly reassure customers that its 10 wells draw from a buried aquifer, not the Ohio River flowing past Gallipolis.
- The 2025 water quality report shows PFOA at 7.52 ng/L, nearly double the 4.0 ng/L federal limit that takes effect in 2031 -- though under current rules the system recorded no violation or action-level exceedance for the…
- The 'high susceptibility' rating on Well Field #1 traces to a real event: volatile organic chemicals were found in the raw water there in the early 1990s.
History5
- early 1990sOhio EPA's source water assessment records that ground water contamination by volatile organic chemicals was detected in the raw water at Gallia Rural Water's #1 Well Field -- the basis for that…
- February…After the East Palestine train derailment, the Gallia County Health Department published statements from local water providers; GCRWA told concerned customers its 10 wells draw groundwater from the…
- May 2, 2025GCRWA completed its remaining PFAS sampling event under the 2024 federal PFAS drinking water rule, analyzing for the six regulated PFAS. All results were non-detect except PFOA at 7.52 ng/L.
- May 29, 2025The Ohio Water Development Authority board approved a Drinking Water Assistance Loan Fund agreement with the Gallia County Rural Water Association for $4,454,012.80.
- 2025GCRWA participated in the fifth round of the Unregulated Contaminant Monitoring Rule (UCMR 5), which detected PFOA (7.52 ng/L, range 4-7.52) and lithium (9.65 ug/L). The association held an…
Treatment & pressure
How it is treated
Groundwater from 10 wells in Gallipolis and Addison Townships, drawing on the Ohio River Valley Aquifer, is treated at an Ohio EPA Class II water treatment plant that runs 24 hours a day, 7 days a week, 365 days a year. The CCR does not itemize the process train, but chlorine and fluoride are both…
Source: galliah2o.comgalliah2o.com
Water pressure
Not published. No CCR, engineering report or pressure-zone map giving a psi figure was found.
What it costs
$9.70 per 1,000 gallons
Typical household bill about $46 a month for water.
Declining-block schedule published by the association. On a 5/8-inch meter the minimum bill is $27.00, covering the first 2,000 gallons ($13.50 per 1,000). Above that: $9.70 per…
Source: galliah2o.comdam.assets.ohio.gov
Water quality & impurities10
| Contaminant | Level | Limit | Year |
|---|---|---|---|
| PFOA Sampled 5/2/2025; UCMR 5 range 4-7.52 ng/L. Nearly double the 4.0 ng/L MCL set by the 2024 federal PFAS rule, but that… | 7.52 ng/L | 4 (MCL… | 2025 |
| Total Trihalomethanes (TTHM) Range 6.2-22.7 ppb; byproduct of chlorine disinfection. | 22.7 ppb | 80 | 2025 |
| Haloacetic Acids (HAA5) Range ND-4.8 ppb; byproduct of chlorine disinfection. | 4.8 ppb | 60 | 2025 |
| Fluoride Range 0.80-1.28 ppm; water additive plus natural erosion. | 1.01 ppm | 4 | 2025 |
| Chlorine Range 0.24-2.14 ppm; additive used to control microbes. | 1.03 ppm | 4 | 2025 |
| Nitrate Well below the MCL. | 0.492 ppm | 10 | 2025 |
| Lead (90th percentile) 0 of 30 samples over the action level; the CCR states there was no detectable lead in the system this testing period. | 1.8 ppb | 15 (AL) | 2025 |
| Copper (90th percentile) 0 of 30 samples over the action level. | 0.424 ppm | 1.3 (AL) | 2025 |
| Barium Discharge of drilling wastes and from metal refineries. | 0.061 ppm | 2 | 2024 |
| Sodium Informational for people on sodium-restricted diets; not a violation. | 24.2 ppm | 20 (advisory… | 2024 |
Source: galliah2o.com
EPA compliance record
Lead at the tap: 90th-percentile result 1.8 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
1 violation of any kind logged since 2020, 1 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans1
Planned or needed
- OWDA Drinking Water Assistance Loan Fund improvements · $4.5 million · 2025 · planned
Loan agreement approved by OWDA board resolution dated 05-29-2025. The resolution index names only the borrower and amount; the project scope is not itemized…
Source: owda.org
Supply stress
Ohio EPA rates the aquifer supplying Well Field #1 as HIGH susceptibility to contamination, on the strength of a documented ground water contamination by volatile organic chemicals in the raw water in the early 1990s. Well Field #2 is rated MODERATE, because of the aquifer's sensitivity and several potential contaminant sources inside…
Source: galliah2o.comgalliacohealth.gov
Sewers
Sanitary
Gallia County Rural Water Association is a drinking-water-only association; it operates no sanitary sewer system, and the Ohio EPA 2022 Sewer and Water Rate Survey lists no sewer usage or sewer bill for it. Sanitary service in its five-county area is provided, where it exists at all, by separate municipal systems such as the City of…
Storm
No stormwater utility or drainage program is associated with GCRWA, and none was found in the sources reviewed.
Source: galliah2o.comdam.assets.ohio.gov
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 Gallia Co. Rural Water Association on record as its main water supplier.
Also present in 2 more ZIP codes
- 45614 · Springfield Township and Bidwell5% of residents
- 45631 · Green Township and Gallipolis1% 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
Gallia Co. Rural Water Association does not buy water from another system on record; it treats its own source water.
1 system on record buys water from Gallia Co. Rural Water Association: Rio Grande.
Photograph
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
Gallia Co. Rural Water Association's own pages: galliacohealth.gov, galliah2o.com
Notable facts: galliah2o.com, galliah2o.com, galliah2o.com, galliacohealth.gov
History: galliah2o.com, galliacohealth.gov, owda.org
Water quality: galliah2o.com
Planned work: owda.org
Rates: galliah2o.com, dam.assets.ohio.gov
Sewers: galliah2o.com, dam.assets.ohio.gov
Treatment: galliah2o.com, galliah2o.com
Supply stress: galliah2o.com, galliacohealth.gov