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ZIP Code 93637 Water Quality
California · 82,354 people served · 29 water systems
F
FailingZIP code 93637 is in California and is a mid-sized community from a drinking-water-service perspective, with 82,354 people served by 29 EPA-registered public water systems. It corresponds to MADERA.
Within ZIP code 93637, the EPA Safe Drinking Water Information System (SDWIS) records 160 health-based violations during the past five years across 29 water systems serving this postal area. The grade of F reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 93637
Water Systems Serving 93637
CITY OF MADERA
PWSID: CA2010002
66,560 served
MADERA CO CMD19-PARKWOOD
PWSID: CA2010004
1,637 served
MADERA CO SA3-PARKSDALE
PWSID: CA2010006
1,789 served
MADERA CO MD10A-MADERA RANCHOS
PWSID: CA2010008
3,172 served
MADERA CO SA1-INDIAN LAKES
PWSID: CA2010011
1,562 served
MADERA CO MD1-HIDDEN LAKE ESTATES
PWSID: CA2000544
162 served
MADERA CO SA16 SUMNER HILL
PWSID: CA2000729
135 served
MADERA CO CSA 22C GUNNER RANCH
PWSID: CA2010019
3,050 served
MD 95 RANCHOS WEST
PWSID: CA2000692
150 served
MD 60 DILLON ESTATES
PWSID: CA2000849
150 served
MD 40 SUNSET RIDGE ESTATES
PWSID: CA2000851
150 served
MD 58 SIERRA HIGHLANDS
PWSID: CA2000865
75 served
MD 05 MOUNTAIN RANCHES
PWSID: CA2000549
239 served
MD 08 NORTH FORK WATER SYSTEM
PWSID: CA2000561
264 served
MD 42 STILL MEADOW
PWSID: CA2000737
100 served
MD 46 AHWAHNEE RESORTS
PWSID: CA2000293
300 served
MD 73 QUARTZ MOUNTAIN
PWSID: CA2000690
375 served
MD 36 EASTIN ARCOLA
PWSID: CA2000727
84 served
MD 85 VALETA
PWSID: CA2000511
45 served
MD 07 MARINA VIEW HEIGHTS
PWSID: CA2000551
200 served
MD 24 TEAFORD MEADOW LAKES
PWSID: CA2000552
150 served
MD 28 RIPPERDAN SELF HELP
PWSID: CA2000553
48 served
MD 33 FAIRMEAD
PWSID: CA2000554
568 served
MD 43 MIAMI CREEK KNOLLS
PWSID: CA2000557
100 served
MD 63 MEADOW SPRINGS RANCH
PWSID: CA2000757
300 served
SA 14 CHUK CHANSE SUBDIVISION
PWSID: CA2000724
100 served
MD 37 LA VINA
PWSID: CA2000728
350 served
SANDY CREEK VILLAGE MHP
PWSID: CA1000260
89 served
MADERA MH & RV PARK
PWSID: CA2000595
450 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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