MADERA, CA

Total Incidents:
1,707
Last Incident:
July 01, 2018

Note: Just because the latest incident is in 2017 or 2018 doesn't mean your water is free of contaminants! There is a considerable lag between when data is collected and when it is published by the EPA.

Contaminants

All Incidents

Water System Type Measure Violation Effects Begin Date
MADERA CO SA16 SUMNER HILL-WATER SYSTEM Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2018-07-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2018-07-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2018-07-01
MD 07 MARINA VIEW HEIGHTS Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-07-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-07-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2018-07-01
MD 06 LAKE SHORE PARK Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-04-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2018-04-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2018-04-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2018-04-01
MD 06 LAKE SHORE PARK Uranium-238 MCL, Average Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2018-04-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2018-04-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-04-01
MD 07 MARINA VIEW HEIGHTS Uranium-238 MCL, Average Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2018-04-01
MD 06 LAKE SHORE PARK Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-04-01
MD 07 MARINA VIEW HEIGHTS Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-04-01
HILLVIEW WATER CO-RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-04-01
MD 06 LAKE SHORE PARK Uranium-238 MCL, Average Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2018-04-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-01-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2018-01-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2018-01-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2018-01-01
HILLVIEW WATER CO-RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2018-01-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-11-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-11-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-10-01
MADERA CO SA19-ROLLING HILLS Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-10-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-10-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-10-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-10-01
HILLVIEW WATER CO-RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-10-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
BASS LAKE HEIGHTS MUTUAL WATER Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
ECCO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
ECCO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
BASS LAKE HEIGHTS MUTUAL WATER Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
ECCO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-09-01
ECCO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-08-01
ECCO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-08-01
ECCO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-08-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-07-01
BASS LAKE MHP Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
MD 42 STILL MEADOW Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
MD 07 MARINA VIEW HEIGHTS Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
HILLVIEW WATER CO-RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-07-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-07-01
MD 24 TEAFORD MEADOW LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
MD 06 LAKE SHORE PARK Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-07-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-07-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-06-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-06-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-05-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-05-01
BASS LAKE MHP Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
MD 06 LAKE SHORE PARK Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
HILLVIEW WATER CO-RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
MD 24 TEAFORD MEADOW LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
TWO TWENTY FOUR MOBILE HOME PK Uranium-238 MCL, Single Sample Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2017-04-01
LIBERTY HIGH SCHOOL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-04-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-04-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-04-01
MD 07 MARINA VIEW HEIGHTS Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
NORTH FORK ELEMENTARY SCHOOL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-04-01
TWO TWENTY FOUR MOBILE HOME PK Uranium-238 MCL, Single Sample Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2017-04-01
TWO TWENTY FOUR MOBILE HOME PK Uranium-238 MCL, Single Sample Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2017-04-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-04-01
LIBERTY HIGH SCHOOL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
CEDAR VALLEY MUTUAL WATER CO Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-01-01
MD 08 NORTH FORK WATER SYSTEM Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
COLD SPRING GRANITE CO RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
NORTH FORK ELEMENTARY SCHOOL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MD 24 TEAFORD MEADOW LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MD 42 STILL MEADOW Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-01-01
MD 07 MARINA VIEW HEIGHTS Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
YOSEMITE FORKS EST MUTUAL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
COLD SPRING GRANITE CO RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MD 06 LAKE SHORE PARK Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MADERA CO MD1-HIDDEN LAKE ESTATES Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2017-01-01
LIBERTY HIGH SCHOOL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
HILLVIEW WC-OAKHURST/SIERRA LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MADERA CO MD1-HIDDEN LAKE ESTATES TTHM MCL, Average Maximum Contaminant Level Violation Liver, kidney or central nervous system problems; increased risk of cancer 2017-01-01
HILLVIEW WATER CO-RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
COLD SPRING GRANITE CO RAYMOND Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
LEISURE ACRES MUTUAL WATER COMPANY Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
LEISURE ACRES MUTUAL WATER COMPANY Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2017-01-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2016-12-01
MD 46 AHWAHNEE RESORTS Arsenic MCL, Single Sample Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2016-12-01
MD 24 TEAFORD MEADOW LAKES Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2016-10-01
MADERA CO SA16 SUMNER HILL-WATER SYSTEM Total Haloacetic Acids (HAA5) MCL, Average Maximum Contaminant Level Violation Increased risk of cancer 2016-10-01
ALMADEN - MADERA Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2016-10-01
LIBERTY HIGH SCHOOL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2016-10-01
TWO TWENTY FOUR MOBILE HOME PK Uranium-238 MCL, Average Maximum Contaminant Level Violation Increased risk of cancer, kidney toxicity 2016-10-01
YOSEMITE FORKS EST MUTUAL Arsenic MCL, Average Maximum Contaminant Level Violation Skin damage or problems with circulatory systems, and may have increased risk of getting cancer 2016-10-01