Northern Perry Co.water #1

Who runs it

EPA's record describes Northern Perry Co.water #1 as owned by a local government. It has 711 service connections and serves 1,706 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 740-342-1065.

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

How the water is treated

Northern Perry Co.water #1 buys water that Thornville, Village Of treats first, so the steps that count are the seller's. EPA's treatment table registers these steps for Thornville, Village Of: corrosion control and chlorine disinfection.

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 3 health-based violations for Northern Perry Co.water #1 since 2015. Health-based means a contaminant above its legal limit or a required treatment step not carried out. They fall into 2 separate problems (one contaminant or rule in one year); the table lists them all.

EPA logs a violation for each compliance period a problem lasts, so the count of 3 includes 1 repeat entry of the problems listed.

EPA logs 6 violations of any kind since 2020: 2 for required testing that was missed or reported late; 3 for a report, record or notice that was missing, late or incomplete (the yearly water quality report, a public notice, lead line records); 1 health-based.

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 2025, the 90th-percentile lead result at Northern Perry Co.water #1 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 17 sampling periods on file for Northern Perry Co.water #1 since 2016, the first ending in 2016; no period was above 10 ppb.

Copper: the latest result EPA lists is 1.56 mg/L in the period ending December 2019, above the 1.3 mg/L action level. EPA's data lists copper only for periods that went over the level.

Every water system has to inventory its service lines, the pipes from the main to each building. In the inventory Northern Perry Co.water #1 sent EPA, 741 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

The water Northern Perry Co.water #1 buys is treated by Thornville, Village Of, so the results below are Thornville, Village Of's.

Ohio EPA's own statewide sampling tested 1 plant of Thornville, Village Of (latest sample September 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 Thornville, Village Of as sampled, most recently July 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 Northern Perry Co.water #1's samples in 2019, the last year it was sampled, was 0 µg/L. The worst yearly average was 29.6 µg/L and the highest single sample was 86.3 µg/L, from 32 samples taken from 2013 to 2019.

For HAA5, the average in the last year sampled was 0 µg/L. The worst yearly average was 7.8 µg/L and the highest single sample was 18.9 µg/L, from 32 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

The water Northern Perry Co.water #1 buys is treated by Thornville, Village Of, so the results below are Thornville, Village Of's.

Nitrate: the highest of 8 samples was 1.33 mg/L (as nitrogen) in 2014; in 2019, the last year sampled, the highest was 1.12 mg/L. No sample was over the limit of 10 mg/L. Nitrate above 10 is unsafe for infants.

Arsenic was not detected in 3 samples (limit 10 µg/L).

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 of Thornville, Village Of.

Solvents and fuels

The water Northern Perry Co.water #1 buys is treated by Thornville, Village Of, so the results below are Thornville, Village Of'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 3 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 of Thornville, Village Of.

Farm chemicals and metals

The water Northern Perry Co.water #1 buys is treated by Thornville, Village Of, so the results below are Thornville, Village Of's.

EPA's file holds results for 8 of the nine herbicides and metals it checked. Detected: chromium in 1 of 3 samples, highest 2.84 µg/L (limit 100); barium in 2 of 3 samples, highest 12 µg/L (limit 2,000); selenium in 1 of 3 samples, highest 1 µg/L (limit 50). Not detected: atrazine in 2 samples, alachlor in 2 samples, cadmium in 3 samples, mercury in 3 samples, thallium in 3 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 of Thornville, Village Of.

Bacteria in the pipes

From 2012 to 2019, 1 of 189 routine total coliform samples taken in the distribution system at Northern Perry Co.water #1 tested positive (0.53%); in 2019, the last year on file, 0 of 24 did. E. coli was never found in the 1 sample 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 Northern Perry Co.water #1 buys its water from Thornville, Village Of, 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. The level it reports is 0.26 mg/L.

EPA's treatment table lists no fluoridation step at Thornville, Village Of, which treats the water Northern Perry Co.water #1 buys.

Measured fluoride: none was detected in 3 samples leaving the plants of Thornville, Village Of, which supplies Northern Perry Co.water #1, 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 estimated the service area of Northern Perry Co.water #1 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.