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Platte County, MO Water Quality

Water quality data for 13 public water systems serving Platte County, Missouri — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 13 water systems · 18 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Platte County Earns a A

Platte County: 18 communities across 13 water systems. 94.4% have no open violations.

  • Median lead where detected: 2.08 ppb
  • 9 communities with a lead detection, 9 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 3 with significant inspection deficiencies
  • 94.4% of communities have no open violations
2.08 ppb
Median Lead Level
County-wide, 90th percentile
13
Water Systems
Active CWS & NTNCWS
94%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Parkville
    Not detected
    No federal limits exceeded on record
    A
  • Platte City
    Not detected
    No federal limits exceeded on record
    A
  • Riverside
    Not detected
    No federal limits exceeded on record
    A
  • Weatherby Lake
    Not detected
    No federal limits exceeded on record
    B
  • Lake Waukomis
    2.16 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Camden Point
    1.18 ppb
    1 violation currently open
    D
  • Weston
    Not detected
    1 significant inspection deficiency
    B
  • Ferrelview
    2.08 ppb
    1 significant inspection deficiency
    B
  • Ridgely
    1.66 ppb
    3 health-based violations since 2015
    B
  • Edgerton
    1.24 ppb
    Copper above the 1,300 ppb action level
    A
County Lead Level — Median 2.08 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2.08 ppb — 13.9% of the federal action level
Systems by Lead Level
Under 5 ppb
9
No Data
9

All Cities in Platte County

Parkville Not detected A
Platte City Not detected A
Riverside Not detected A
Weatherby Lake Not detected B
Weston Not detected B
Lake Waukomis 2.16 ppb B
Dearborn 3.39 ppb B
Camden Point 1.18 ppb D
Edgerton 1.24 ppb A
Farley 3.22 ppb A
Tracy 0.56 ppb B
Ferrelview 2.08 ppb B
Houston Lake Not detected A
Platte Woods 2.16 ppb B
Northmoor Not detected A
Ridgely 1.66 ppb B
New Market Not detected B
Iatan Not detected B
Showing 18 cities
No active violations Active violations

About Platte County Drinking Water

Platte County is served by 13 water systems covering 18 communities. 94% have no open violations.

Of the communities reporting lead results, 9 recorded a detection, with a median of 2.08 ppb — 14% of the federal action level. 9 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 3 of them.

Frequently Asked Questions

Is Platte County tap water safe to drink?▼
94% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Platte County?▼
Among communities with a detection the median is 2.08 ppb, 14% of the 15 ppb action level. 9 reported none detected and 0 reported no result.
How many water systems serve Platte County?▼
13 community water systems serve 18 communities here.
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