01The verdict: is Lower Sipaulovi, Lower Mishongnovi water safe?
Lower Sipaulovi, Lower Mishongnovi's drinking water has significant quality concerns based on EPA testing data. With a grade of D (48/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 609 residents using groundwater (wells).
19 unresolved violations on record
EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.
See what was cited ↓Lead is well under the limit
90th-percentile lead is 5.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓17 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 ↓Lower Sipaulovi, Lower Mishongnovi's drinking water received a grade of D (48 out of 100), indicating poor water quality. The city's 1 water system serves approximately 609 residents using purchased ground water.
Lead levels were measured at 5.0 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 293 violations on record, including 63 health-based violations. 19 remain unresolved.
Lower Sipaulovi, Lower Mishongnovi ranks #89 out of 129 cities in Connecticut for water quality, placing it below average in the state. Lower Sipaulovi, Lower Mishongnovi 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, Lower Sipaulovi, Lower Mishongnovi may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities. The system has seen 17 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
02What's in Lower Sipaulovi, Lower Mishongnovi's water
Every contaminant flagged in Lower Sipaulovi, Lower Mishongnovi, 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. | 5.0 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in Connecticut
Cities ranked by compounds detected Cu Copper in Connecticut
Cities ranked by 90th-percentile copper
03Lower Sipaulovi, Lower Mishongnovi'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 293 violations on record, including 63 health-based violations. 19 remain unresolved.
1 of the last ten years was clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.
▼ Down 45 ppb since 1996. Latest reading: 5 ppb (2025) — 33% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Lower Sipaulovi, Lower Mishongnovi's water comes from
Lower Sipaulovi, Lower Mishongnovi 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 native american ownership.
609 people
Residents served across Lower Sipaulovi, Lower Mishongnovi's service area.
Water quality depends on both the wholesaler's treatment standards and the condition of Lower Sipaulovi, Lower Mishongnovi'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 native american ownership and serves approximately 609 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| Sipaulovi (Lower Sipaulovi/Lower Mishongnovi) | 090400107 | 609 | Purchased Groundwater |
05How Lower Sipaulovi, Lower Mishongnovi compares
Scores for nearby Connecticut cities on one line, with the average marked.
dashed line = Connecticut average (72/100)
Lower Sipaulovi, Lower Mishongnovi scores 48/100 — below the Connecticut average of 72/100. It outscores 2 of 10 nearby cities. Full Connecticut rankings →
82.4 / 100CBethany, CT
55.8 / 100ABranford, CT
85.4 / 100FCheshire, CT
35.5 / 100BDerby, CT
80.2 / 100AEast Haven, CT
85.4 / 100
06What to do at home
Steps matched to what testing actually found in Lower Sipaulovi, Lower Mishongnovi's water — not generic advice.
A basic carbon filter still helps
Lower Sipaulovi, Lower Mishongnovi'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 Lower Sipaulovi, Lower Mishongnovi alerts
We refresh EPA data monthly and surface new violations, advisories, and boil-water notices for your county on this page.
All water alerts →Frequently asked questions
Is Lower Sipaulovi, Lower Mishongnovi, CT tap water safe to drink?
Lower Sipaulovi, Lower Mishongnovi's water quality earned a grade of D (48/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #89 out of 129 cities tested in Connecticut.
What contaminants are in Lower Sipaulovi, Lower Mishongnovi's water?
Lead was measured at 5.0 ppb (90th percentile). 293 violations are on record.
How is Lower Sipaulovi, Lower Mishongnovi'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 Lower Sipaulovi, Lower Mishongnovi?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lower Sipaulovi, Lower Mishongnovi's water come from?
Lower Sipaulovi, Lower Mishongnovi's water is sourced from Purchased ground water. The city has 1 water system serving approximately 609 residents.
What health violations has Lower Sipaulovi, Lower Mishongnovi's water system had?
Lower Sipaulovi, Lower Mishongnovi has 63 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 19 violations remain unresolved.
Is Lower Sipaulovi, Lower Mishongnovi's groundwater at risk of contamination?
Lower Sipaulovi, Lower Mishongnovi 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 293 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 Lower Sipaulovi, Lower Mishongnovi's water compare to other cities?
Lower Sipaulovi, Lower Mishongnovi ranks #89 out of 129 cities in Connecticut (better than 31% of state cities) and #13287 out of 15382 cities nationally (14th percentile). The grade of D reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Lower Sipaulovi, Lower Mishongnovi's small water system affect quality?
Lower Sipaulovi, Lower Mishongnovi's system serves approximately 609 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 293 violations on record.