Blanco, OK Water Safety: 73/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Drinking water tracked for Blanco by OK authorities posts above-average scores — the majority of systems are free from health-based exceedances and the city's grade sits above the state median.
How Blanco Compares
Data: EPA SDWIS Last verified: 2026-06-03
Blanco Water: The Quick Version
- Homes built before 1986: 81% — older plumbing may contain lead solder.
- Estimated remediation: $2,500 per household.
- CDC health risk index: 15.75 — above typical levels.
Water Systems Serving Blanco
Structurally, Blanco, OK's water supply is divided. Federal data identifies 3 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
Overview
We track water quality and home safety data for 1 ZIP code in Blanco, Oklahoma (population ~157), covering 3 community water systems serving approximately 6,801 people region-wide.
No EPA violations recorded across any ZIP codes in Blanco — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Blanco: B (73/100)
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
Blanco water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Blanco
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 74528 | B | ADAMSON RWD #8 | 4,221 |
All ZIP Codes in Blanco
- 74528 [B]
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.
CDC Health Data for Blanco
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
How Old Is Blanco's Housing Stock?
With 81% 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
Because the majority of Blanco's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1976 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Blanco 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.
Protecting Children from Lead in Blanco
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.
When older housing represents 81% of the local inventory or aggregate readings approach the federal action level, an in-home check becomes the standard way to translate citywide averages into the specific reality of an individual Blanco address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Blanco
Within the NFIP's national dataset, Blanco falls in moderate-exposure territory — 1 documented incident spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Blanco has a moderate flood history with 1 FEMA claims averaging $108,967 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$2,500</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.
Deep Dive Reports
Detailed analysis for Blanco, OK