PlainWater

PIONEER ELEMENTARY SCHOOL

PWS ID: CA0900111 · SOMERSET, California 95684

Population Served
227
Total Violations
51
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
19
County
El Dorado
School/Daycare
Yes
MCL Violations
3
Monitoring Violations
42
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 8 2024
Coliform (TCR) MCL 3 2008
Revised Total Coliform Rule MON 2 2022
Nitrate-Nitrite MR 2 2021
Consumer Confidence Rule Other 2 2022
Diquat MR 1 2019
Benzo(a)pyrene MR 1 2019
Carbofuran MR 1 2019
Di(2-ethylhexyl) phthalate MR 1 2019
Atrazine MR 1 2019
2,4,5-TP MR 1 2019
Methoxychlor MR 1 2019
Glyphosate MR 1 2019
Simazine MR 1 2019
OXAMYL MR 1 2019
Toxaphene MR 1 2019
HEXACHLOROBENZENE MR 1 2019
LASSO MR 1 2019
Di(2-ethylhexyl) adipate MR 1 2019
BHC-GAMMA MR 1 2019
Chlordane MR 1 2019
Picloram MR 1 2019
Total Polychlorinated Biphenyls (PCB) MR 1 2019
LEAD AND COPPER RULE REVISIONS TT 1 2024
Heptachlor epoxide MR 1 2019
1,2-DIBROMO-3-CHLOROPROPANE MR 1 2019
Heptachlor MR 1 2019
LEAD AND COPPER RULE REVISIONS RPT 1 2024
Endothall MR 1 2019
Endrin MR 1 2019
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.