01The verdict: is Jamesport water safe?
Based on EPA testing data, Jamesport's tap water is generally safe to drink. The water system earned a grade of A (90.7/100), meeting federal drinking water standards across key contaminant categories. The city's 1 water system serves approximately 567 residents using groundwater (wells).
Nothing over a legal limit
Every contaminant measured in Jamesport's water is within its EPA limit, and no violations are unresolved.
See the testing ↓Lead is well under the limit
90th-percentile lead is 4.3 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓2 violations in the last five years
Recent compliance history is the best predictor of future problems — the year-by-year record is below.
See the record ↓Jamesport's drinking water received a grade of A (90.7 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 567 residents using purchased ground water.
Lead levels were measured at 4.3 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 22 violations on record, including 13 health-based violations. All violations have been resolved.
Jamesport ranks #71 out of 487 cities in Missouri for water quality, placing it above average in the state. Jamesport purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition. As a small community water system, Jamesport may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
02What's in Jamesport's water
Every contaminant flagged in Jamesport, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 4.3 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in Missouri
Cities ranked by compounds detected Cu Copper in Missouri
Cities ranked by 90th-percentile copper
03Jamesport's ten-year track record
Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 22 violations on record, including 13 health-based violations. All violations have been resolved.
9 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.
▲ Up 4.3 ppb since 1993. Latest reading: 4.3 ppb (2025) — 29% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Jamesport's water comes from
Jamesport purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Purchased Groundwater
Water is bought from a regional wholesaler; quality starts at the supplier's intake and treatment.
Wholesale supplier
Primary treatment happens at the wholesaler; the local utility maintains disinfectant residual in its pipes.
1 system
1 water system, operated under local government ownership.
567 people
Residents served across Jamesport's service area.
Water quality depends on both the wholesaler's treatment standards and the condition of Jamesport's local distribution pipes and storage facilities. Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment. The system is operated by local government ownership and serves approximately 567 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| JAMESPORT PWS | MO1010406 | 567 | Purchased Groundwater |
Water bodies near Jamesport
These water bodies shape the regional watershed and can indirectly affect groundwater quality.
05Pressure on Jamesport's watershed
Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.
Industrial discharge
1 facility within 10 miles reported 0 lb released to surface water in the latest EPA Toxics Release Inventory. Proximity doesn't equal tap contamination — treatment and hydrology decide — but it's pressure on the watershed.
Flood & storm history
4 federal disaster declarations on record for Daviess County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.
06How Jamesport compares
Scores for nearby Missouri cities on one line, with the average marked.
dashed line = Missouri average (67/100)
Jamesport scores 90.7/100 — above the Missouri average of 67/100. It outscores 10 of 10 nearby cities. Full Missouri rankings →
74.8 / 100BKansas City, MO
79.2 / 100FSpringfield, MO
37.1 / 100CColumbia, MO
61.4 / 100FO Fallon, MO
43.4 / 100FDes Peres, MO
36.6 / 100
Compare all cities in the county — grades, violations, and contaminant data side by side.→
07What to do at home
Steps matched to what testing actually found in Jamesport's water — not generic advice.
A basic carbon filter still helps
Jamesport's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.
Compare tested filters →Flush taps & check your service line
Lead leaches from pipes as water sits. Run cold water 30 seconds before drinking (especially mornings), and ask the utility whether your address still has a lead service line.
Lead risks explained →Watch for Jamesport alerts
This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.
All water alerts →Frequently asked questions
Is Jamesport, MO tap water safe to drink?
Jamesport's water quality earned a grade of A (90.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #71 out of 487 cities tested in Missouri.
What contaminants are in Jamesport's water?
Lead was measured at 4.3 ppb (90th percentile). 22 violations are on record.
How is Jamesport's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Jamesport?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Jamesport's water come from?
Jamesport's water is sourced from Purchased ground water. The city has 1 water system serving approximately 567 residents.
What health violations has Jamesport's water system had?
Jamesport has 13 health-based violations on record. The most recent violation was recorded in December 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. All health violations have been resolved.
Is Jamesport's groundwater at risk of contamination?
Jamesport uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 22 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Jamesport's water compare to other cities?
Jamesport ranks #71 out of 487 cities in Missouri (better than 85% of state cities) and #2101 out of 15382 cities nationally (86th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Jamesport's small water system affect quality?
Jamesport's system serves approximately 567 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 22 violations on record.