MADERA CO MD1-HIDDEN LAKE ESTATES
PWSID: CA2000544 · Madera, CA · Serves 162 people
According to EPA Safe Drinking Water Information System (SDWIS), MADERA CO MD1-HIDDEN LAKE ESTATES (PWSID CA2000544) in Madera, CA is listed as a CWS water system covering about 162 people. The same extract lists 102 health-based violation records spanning 2010-2025. Those 102 health-based rows for MADERA CO MD1-HIDDEN LAKE ESTATES cover contaminants such as TTHM, Total Haloacetic Acids (HAA5), Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
MADERA CO MD1-HIDDEN LAKE ESTATES has 102 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 5 distinct EPA contaminant codes appear in this system's record, including TTHM, Total Haloacetic Acids (HAA5), Surface Water Treatment Rule. Recorded violations span 2010–2025. Day-to-day primacy enforcement for this system runs through the California drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA2000544
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Madera, CA
- Population Served
- 162
- Health Violations
- Yes (102)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 49 | 49 |
| Total Haloacetic Acids (HAA5) | 46 | 46 |
| Surface Water Treatment Rule | 3 | 3 |
| CARBON, TOTAL | 3 | 3 |
| Coliform (TCR) | 1 | 1 |
Violation History (102)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Oct 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2025 |
| TTHM | Yes | Jul 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2025 |
| TTHM | Yes | Apr 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2025 |
| TTHM | Yes | Jan 1, 2025 |
| TTHM | Yes | Oct 1, 2024 |
| TTHM | Yes | Oct 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| TTHM | Yes | Jul 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| TTHM | Yes | Apr 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2024 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2024 |
| TTHM | Yes | Oct 1, 2023 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2023 |
| TTHM | Yes | Jul 1, 2023 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2023 |
| TTHM | Yes | Apr 1, 2023 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2023 |
| Surface Water Treatment Rule | Yes | Mar 1, 2023 |
| Surface Water Treatment Rule | Yes | Mar 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2023 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2023 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2023 |
| TTHM | Yes | Oct 1, 2022 |
| TTHM | Yes | Oct 1, 2022 |
| TTHM | Yes | Oct 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Jul 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2022 |
| TTHM | Yes | Jan 1, 2022 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2022 |
| TTHM | Yes | Oct 1, 2021 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2021 |
| TTHM | Yes | Jul 1, 2021 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2021 |
| TTHM | Yes | Apr 1, 2021 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2021 |
| TTHM | Yes | Jan 1, 2021 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2021 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2020 |
| TTHM | Yes | Oct 1, 2020 |
| TTHM | Yes | Jul 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2020 |
| TTHM | Yes | Apr 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2020 |
| TTHM | Yes | Oct 1, 2019 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2019 |
| TTHM | Yes | Oct 1, 2018 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2018 |
| TTHM | Yes | Apr 1, 2018 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2018 |
| TTHM | Yes | Jan 1, 2018 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2018 |
| CARBON, TOTAL | Yes | Jan 1, 2018 |
| TTHM | Yes | Oct 1, 2017 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2017 |
| CARBON, TOTAL | Yes | Oct 1, 2017 |
| TTHM | Yes | Jul 1, 2017 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2017 |
| TTHM | Yes | Apr 1, 2017 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2017 |
| TTHM | Yes | Jan 1, 2017 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2017 |
| TTHM | Yes | Oct 1, 2016 |
| TTHM | Yes | Jul 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| Surface Water Treatment Rule | Yes | Mar 1, 2016 |
Frequently Asked Questions
What does EPA SDWIS list for MADERA CO MD1-HIDDEN LAKE ESTATES?
How many people does MADERA CO MD1-HIDDEN LAKE ESTATES serve?
What violations does MADERA CO MD1-HIDDEN LAKE ESTATES have?
What contaminants have been found in MADERA CO MD1-HIDDEN LAKE ESTATES water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MADERA CO MD1-HIDDEN LAKE ESTATES on cumulative violation count (102) and EPA-reported population served (162). Violation-count peers include HOLUM WATER SYSTEM, CITY OF STRAWN, CITY OF JACKSON.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
MADERA CO MD1-HIDDEN LAKE ESTATES (CA2000544) is drawn from EPA SDWIS. Nearby county systems in this extract include CITY OF MADERA; CHOWCHILLA CITY WATER DEPT; Table Mountain Rancheria; MADERA VALLEY WATER COMPANY. Health-based rows (102 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.