MUNIMETRIC STATE INDEX
U.S. Drinking Water Infrastructure Stress by State
Compare structural stress across all 50 states and territories using the Munimetric State Index. Explore state-level scores, system coverage, signal activity, public-record water quality context, PFAS monitoring records, lead and copper context, and trend behavior across community drinking-water infrastructure. Updated May 2026.
MA37.9(0.0)watchCT33.6(0.0)watchOK32.6(0.0)watchLA32.5(0.0)watchPA31.5(0.0)watchNM31.5(0.0)watchNJ31.4(0.0)watchAK30.2(0.0)watchWV29.6(0.0)watchMO29.3(0.0)watchSC29.1(0.0)watchOH28.7(0.0)watchFL28.7(0.0)watchDC28.5(0.0)watchOR27.5(0.0)watchIL27.5(0.0)watchWA27.2(0.0)watchMS27.0(0.0)watchUT26.7(0.0)watchMN26.7(0.0)watchAZ26.6(0.0)watchKS26.5(0.0)watchRI26.3(0.0)watchMD25.9(0.0)watchCO25.2(0.0)watchNC25.1(0.0)watchTX24.9(0.0)watchAR24.3(0.0)watchDE24.3(0.0)watchSD24.3(0.0)watchIA22.8(0.0)watchIN22.7(0.0)watchWI22.3(0.0)watchNV22.2(0.0)watchNY22.0(0.0)watchAL22.0(0.0)watchTN21.9(0.0)watchCA21.7(0.0)watchNE21.3(0.0)watchID21.2(0.0)watchHI21.2(0.0)watchNH21.2(0.0)watchKY20.8(0.0)stableWY20.6(0.0)stableVT20.1(0.0)stableGA19.9(0.0)stableND19.9(0.0)watchVA19.9(0.0)stableME19.9(0.0)watchMT19.2(0.0)stableMI18.8(0.0)stablePR5.9(0.0)stableMA37.9(0.0)watchCT33.6(0.0)watchOK32.6(0.0)watchLA32.5(0.0)watchPA31.5(0.0)watchNM31.5(0.0)watchNJ31.4(0.0)watchAK30.2(0.0)watchWV29.6(0.0)watchMO29.3(0.0)watchSC29.1(0.0)watchOH28.7(0.0)watchFL28.7(0.0)watchDC28.5(0.0)watchOR27.5(0.0)watchIL27.5(0.0)watchWA27.2(0.0)watchMS27.0(0.0)watchUT26.7(0.0)watchMN26.7(0.0)watchAZ26.6(0.0)watchKS26.5(0.0)watchRI26.3(0.0)watchMD25.9(0.0)watchCO25.2(0.0)watchNC25.1(0.0)watchTX24.9(0.0)watchAR24.3(0.0)watchDE24.3(0.0)watchSD24.3(0.0)watchIA22.8(0.0)watchIN22.7(0.0)watchWI22.3(0.0)watchNV22.2(0.0)watchNY22.0(0.0)watchAL22.0(0.0)watchTN21.9(0.0)watchCA21.7(0.0)watchNE21.3(0.0)watchID21.2(0.0)watchHI21.2(0.0)watchNH21.2(0.0)watchKY20.8(0.0)stableWY20.6(0.0)stableVT20.1(0.0)stableGA19.9(0.0)stableND19.9(0.0)watchVA19.9(0.0)stableME19.9(0.0)watchMT19.2(0.0)stableMI18.8(0.0)stablePR5.9(0.0)stable
State comparison
All States
Score DateMay 19, 2026
Service Markets9,485
States Covered53
National Avg25.4
Elevated / Severe0 / 0
State Comparison
Market Footprint vs Stress
Within-State Band Composition
State Explorer
StateAvg MISIBandDeltaMarketsSignalsTrend
MAMassachusetts37.9Watch0.02551638CTConnecticut33.6Watch0.057235OKOklahoma32.6Watch0.0148894LALouisiana32.5Watch0.02391444PAPennsylvania31.5Watch0.03572047NMNew Mexico31.5Watch0.075427NJNew Jersey31.4Watch0.02601478AKAlaska30.2Watch0.025130WVWest Virginia29.6Watch0.091551MOMissouri29.3Watch0.02101010SCSouth Carolina29.1Watch0.0155819OHOhio28.7Watch0.03321663FLFlorida28.7Watch0.03911945DCDistrict of Columbia28.5Watch0.0420OROregon27.5Watch0.0115599ILIllinois27.5Watch0.04522163WAWashington27.2Watch0.02371122MSMississippi27.0Watch0.02081095UTUtah26.7Watch0.0106524MNMinnesota26.7Watch0.0176820AZArizona26.6Watch0.0154720KSKansas26.5Watch0.090453RIRhode Island26.3Watch0.029143MDMaryland25.9Watch0.078399COColorado25.2Watch0.0174811NCNorth Carolina25.1Watch0.02761337TXTexas24.9Watch0.09874205ARArkansas24.3Watch0.0158738DEDelaware24.3Watch0.034150SDSouth Dakota24.3Watch0.045207IAIowa22.8Watch0.0131541INIndiana22.7Watch0.0211842WIWisconsin22.3Watch0.0195747NVNevada22.2Watch0.044187NYNew York22.0Watch0.03471511ALAlabama22.0Watch0.02891299TNTennessee21.9Watch0.02611044CACalifornia21.7Watch0.07112738NENebraska21.3Watch0.044189IDIdaho21.2Watch0.051212HIHawaii21.2Watch0.040143NHNew Hampshire21.2Watch0.042176KYKentucky20.8Stable0.02331055WYWyoming20.6Stable0.025111VTVermont20.1Stable0.031121GAGeorgia19.9Stable0.0236936NDNorth Dakota19.9Watch0.029113VAVirginia19.9Stable0.0162688MEMaine19.9Watch0.033129MTMontana19.2Stable0.038149MIMichigan18.8Stable0.03041082PRPuerto Rico5.9Stable0.04152Insights
Highest Signal Load
Largest by Market Count
Methodology & Interpretation
- State values are weighted averages of scored drinking-water service markets within each state. They are not full-population state stress estimates.
- Coverage and confidence vary by state. States with fewer scored markets may have wider confidence bands.
- Methodology upgrades can change comparative rank because saturated factors may be weighted differently. A lower rank after a methodology update is not, by itself, evidence of system improvement.
- The headline composite is a blended structural stress measure. Use the component bars to separate infrastructure-heavy readings from socioeconomic or observability-heavy ones.
- Scores are generated using the current MISI methodology. Version and vintage dates are noted in each score record.
Drinking Water Infrastructure Conditions Across U.S. States
This dataset tracks infrastructure stress across community drinking water systems in all U.S. states, enabling comparison of system conditions, trend behavior, and structural risk indicators over time.