Sainte Genevieve, MO Water Safety: 45/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Sainte Genevieve, MO water systems: poor compliance record, lower-tier safety grade.
How Sainte Genevieve Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Sainte Genevieve Water
- Homes built before 1986: 60% — older plumbing may contain lead solder.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 14.51 — above typical levels.
Who Supplies Your Water in Sainte Genevieve
With one provider handling most of Sainte Genevieve's residential supply in MO, water service accountability is concentrated in a single utility among the 1 system on record.
Overview
We track water quality and home safety data for 1 ZIP code in Sainte Genevieve, Missouri, covering 1 community water system serving approximately 12,294 people.
No EPA violations recorded across any ZIP codes in Sainte Genevieve — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Sainte Genevieve: D (45/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Sainte Genevieve water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Sainte Genevieve
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 63670 | D | BLOOMSDALE PWS | 639 |
All ZIP Codes in Sainte Genevieve
- 63670 [D]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Sainte Genevieve
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Housing & Infrastructure in Sainte Genevieve
With 60% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Decades of residential development in Sainte Genevieve took place before the two main regulatory milestones that reduced plumbing-era lead risk: the phase-out of lead pipes before 1970, and the federal ban on lead solder in 1986. With a median build year of 1972, the housing stock here is anchored in that earlier period. The distinction between pre-1970 and 1970-to-1986 construction matters: the oldest homes may have lead pipes in the service line and lead solder in the copper joints, while the 1970-to-1986 tier still carries the solder risk even after lead pipes became less common. Together, these two risk layers affect a majority of the residential properties in the city — a fact the aggregate water quality data doesn't directly reveal.
Over half of homes in Sainte Genevieve were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Sainte Genevieve Homeowners
The household financial perspective in Sainte Genevieve reflects a moderate cost-to-value ratio — an equity share that is not trivially small but remains within the range where most homeowners can address documented water and safety issues by treating the expense as a real line item in property planning rather than a discretionary one.
Remediation costs are moderate relative to home values in Sainte Genevieve. The estimated $1,100–$3,400 range is manageable for most homeowners but still worth budgeting for. Home values are 17% above the Missouri average.
Lead Exposure Risk for Children in Sainte Genevieve
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Wherever 60% of local housing was built before solder rules changed — as is the case in Sainte Genevieve — a faucet-level sample closes the gap that aggregate utility data cannot.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Sainte Genevieve
Over the multi-decade span covered by the National Flood Insurance Program, Sainte Genevieve has accumulated 998 flood claims — a total that reflects a community where significant flooding is a recurring, documented feature of the local environment. That history has direct relevance to water quality. Each major flood event activates contamination pathways that are absent or dormant during dry conditions: treatment plants handling floodwater-saturated intake face sharply elevated contaminant loads; private wells in low-lying FEMA-designated zones — which cover 100% of local ZIP codes — can be infiltrated by surface runoff carrying bacteria, sediment, and chemical residue; distribution systems under pressure during flooding can experience backflow that draws untreated water into the supply.
Sainte Genevieve has a significant flood history with 998 FEMA flood insurance claims on record, averaging $5,795 per claim. With 100% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,100</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Sainte Genevieve
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 60% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Sainte Genevieve, MO