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Water district urges homeowner action and monitoring as septic systems could affect groundwater
Summary
29 Palms Water District described the Salt Nutrient Management Plan and warned septic systems can pose risks to shallow groundwater; district recommended public education, inspections every 3–5 years, and coordination with an ongoing USGS study to protect drinking aquifers.
The 29 Palms Water District briefed the City Council on Nov. 11 about septic‑system management and risks to local groundwater. Matt Schrag, representing the district, summarized the Salt Nutrient Management Plan (SNMP) developed with the city and said the district supplies water exclusively from deep aquifers. He explained that while a clay layer separates deep and shallow aquifers, the potential exists for contamination of shallow groundwater to migrate and affect deeper sources if monitoring shows elevated nitrate levels.
Schrag recommended stepped measures: continued monitoring, homeowner education about proper septic practices (for example, avoid disposing oils, greases and medications in septic systems), routine inspections and pumping every three to five years as needed, and adding information to city and district websites and newsletters. He emphasized the district’s participation in a USGS study that will help clarify whether shallow aquifer nitrate issues could force state regulators to require a centralized sewer system.
Council thanked the district and asked staff to continue coordinating public outreach and monitoring plans. The district committed to providing pamphlets and to include SNMP information in its quarterly communications.
Next steps: Staff and district will continue outreach, add resources to web/newsletter channels and report monitoring results to council as the USGS study provides more data.
