CITY REPORT OK 49 HEALTH VIOLATIONS

Delaware, OK: 122 Violations - Home Safety Score unavailable

1 ZIP code · 4 water systems · Updated

Data: EPA SDWIS

1
ZIP Codes
4
Water Systems
1
ZIPs with Violations
Zone 3
Radon Risk (Low)
$127K
Median Home Value
$2,400
Est. Remediation (1.9% of home value)

What You Should Know About Delaware Water

  • Your city's water systems recorded 122 violations in the past 5 years.
  • Average lead level: 0.0021 mg/L.
  • Homes built before 1986: 57% - older plumbing may contain lead solder.
  • Estimated remediation: $2,400 per household.
  • CDC health risk index: 16.13 - above typical levels.

Who Supplies Your Water in Delaware

Multiple utilities divide Delaware, OK's water service - 3 leading providers among 4 on the federal register.

Overview

We track home safety data for 1 ZIP code in Delaware, Oklahoma (population ~848), covering 4 community water systems serving approximately 6,198 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 49 health-based violations appear in the available health breakdown.

Water Sources

Delaware water systems draw from: Surface water.

Lead & Copper

  • Average lead level (90th percentile): 0.0021 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 3 (Low Risk)

Top Contaminants

Contaminant Category Violations ZIPs Affected
Haloacetic Acids (HAA5) Disinfection Byproducts 114 1
Lead and Copper Rule Treatment Technique 46 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 34 1
Stage 1 DBP Rule Treatment Technique 34 1
Stage 2 DBP Rule Treatment Technique 8 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
74027 122 49 Nowata Company Rwd #7

All ZIP Codes in Delaware

  • 74027 - 122 violations ⚠

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Health Outcomes in Delaware

12.3%
Asthma (US: 9.8%)
15.2%
Diabetes (US: 10.4%)
18.7%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 12.3% ↑
Diabetes 15.2% ↑
Mental Health 18.7% ↑

Vertical line = national average. Above national · Below national

Top Contaminants in Delaware Water

Haloacetic Acids (HAA5) 114 violations
Disinfection Byproducts · EPA limit: 0.06 mg/L
Increased cancer risk with long-term exposure
Lead and Copper Rule 46 violations
Treatment Technique
Developmental delays in children, kidney damage
Total Trihalomethanes (TTHM) 34 violations
Disinfection Byproducts · EPA limit: 0.08 mg/L
Increased cancer risk with long-term exposure

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Housing & Infrastructure in Delaware

1971
Median Build Year
57%
Built Before 1986
28%
Built Before 1970
Copper
Likely Pipe Material

With 57% 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

The character of Delaware's housing stock is one of deep historical layering - a median build year of 1971 signals a city built largely before the plumbing era changes of 1986 and 1970. Lead-soldered copper joints and, in the oldest properties, lead service lines are commonly present in this inventory. That context shapes what individual water testing may reveal, particularly in neighborhoods where the oldest housing is concentrated.

1971
Median Year Built
57%
Pre-1986 (Lead Paint Risk)
28%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (28%) 1970–1986 (29%) Post-1986 (43%)

Over half of homes in Delaware 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 Delaware Homeowners

Viewed from a financial planning lens, Delaware sits in the moderate remediation-share tier - the equity impact of addressing documented issues is real, and deliberate preparation separates smooth outcomes from disruptive ones for most homeowners.

Median Home Value
$126,600
Est. Remediation
$2,400
Remediation as % of home value 1.9%

Remediation costs are moderate relative to home values in Delaware. The estimated $1,500–$4,000 range is manageable for most homeowners but still worth budgeting for. Home values are 13% below the Oklahoma average.

Lead Exposure Risk for Children in Delaware

57%
Homes Built Before 1986
0.0021
mg/L Avg Lead (Limit: 0.015)

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.

57% - that captures the slice of Delaware housing dating from before the federal ban on solder containing lead. It pairs with aggregate utility readings that either approach or cross 0.015 mg/L, the benchmark set under the EPA Lead and Copper Rule. Together, the two figures shift one-home reads into a standard household-level confirmation, particularly for families with kids. A certified lead-removal filter is available through retailer-verified channels if a kit returns results that warrant additional measures.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical NFIP Claim Context in Delaware

1
Total FEMA Flood Claims
$33,041
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Delaware contains 1 flood insurance claim. Among claims with payment data, the average reported building, contents, and ICC component sum is $33,041. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

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. The <strong>$2,400</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Frequently Asked Questions

How many water violations does Delaware have?
Delaware water systems have a total of 122 EPA violations, including 49 health-based violations. Violations are tracked across 1 ZIP code.
Does Delaware water have lead?
The average 90th-percentile lead level in Delaware is 0.0021 mg/L. This is below the EPA action level of 0.015 mg/L. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Delaware?
Delaware is served by 4 public water systems across 1 ZIP code, serving approximately 848 people.
How much does it cost to fix water issues in Delaware?
Estimated remediation costs in Delaware average $2,400 per household, ranging from $1,500 to $4,000. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesOklahoma → Delaware, OK

How to cite this page

APA ZipCheckup. (2026). Delaware, OK: 122 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/ok/delaware/
BibTeX
@misc{zipcheckup-cities-ok-delaware,
  author = {{ZipCheckup}},
  title  = {{Delaware, OK: 122 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ok/delaware/}
}

Page version: August 2026.

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