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Town of Grantsville

Water Supply, Grantsville, Maryland. NPDES permit MD0063274, in force until Feb 28, 2029. Last 12 months: over a limit 20 times (last August 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (9 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 20 values over a limit
Period endingParameterReportedLimitOver by
November 2025pH, minimum6.4 SU≥ 6.5 SU—
December 2025pH, minimum6.4 SU≥ 6.5 SU—
February 2026pH, minimum6.31 SU≥ 6.5 SU—
April 2026Chlorine, total residual, maximum.26 mg/L< .1 mg/L160%
April 2026Iron, total [as Fe], quarterly average2.29 mg/L≤ 2 mg/L15%
April 2026pH, minimum6.34 SU≥ 6.5 SU—
May 2026Chlorine, total residual, maximum.98 mg/L< .1 mg/L880%
May 2026Iron, total [as Fe], daily maximum3.27 mg/L≤ 3 mg/L9%
May 2026Iron, total [as Fe], quarterly average3.27 mg/L≤ 2 mg/L64%
May 2026pH, minimum5.94 SU≥ 6.5 SU—
June 2026Chlorine, total residual, maximum.41 mg/L< .1 mg/L310%
June 2026pH, minimum6.4 SU≥ 6.5 SU—
July 2026Chlorine, total residual, maximum.15 mg/L< .1 mg/L50%
July 2026Iron, total [as Fe], daily maximum4.75 mg/L≤ 3 mg/L58%
July 2026Iron, total [as Fe], quarterly average4.75 mg/L≤ 2 mg/L138%
July 2026pH, minimum6.23 SU≥ 6.5 SU—
August 2026Chlorine, total residual, maximum.1 mg/L< .1 mg/L0%
August 2026Iron, total [as Fe], daily maximum3.42 mg/L≤ 3 mg/L14%
August 2026Iron, total [as Fe], quarterly average3.42 mg/L≤ 2 mg/L71%
August 2026pH, minimum6.31 SU≥ 6.5 SU—

Limits in force (9)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedquarterly average≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 30 mg/Lall year
Iron, total [as Fe]quarterly average≤ 2 mg/Lall year
Iron, total [as Fe]daily maximum≤ 3 mg/Lall year
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year
Chlorine, total residualmaximum< .1 mg/Lall year
Flow, dischargemonthly averagereport only (MGD)all year

How strict are these limits?

Cited limits by parameter: Maryland's rules and the federal ones.

Same industry: the 18 Water Supply permits in Maryland.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0063274 · MCP: https://passage-data.com/mcp