Wastewater Treatment Plant Costa Rica – Regulations, Design & Reports

Wastewater Treatment Plant Costa Rica: Full Guide 2025

If you're searching for a wastewater treatment plant Costa Rica, here’s a full breakdown: PTAR regulations, water quality standards, allocation data, required reporting, and SEO tips to rank higher on Google using Wix.

1. Key Regulations for Wastewater Treatment Plants (PTAR) in Costa Rica

• Decree 42075‑S‑MINAE: infiltration requirements for treated wastewater, including design memory and infiltration testing.

• Decree 39887‑S‑MINAE: technical design and PTAR system approval.

• Decree 33601‑S‑MINAE: permissible limits (BOD, TSS, coliforms, pH).

• Decree 39316‑S‑MINAE: sanitary handling of sludge and biosolids.

2. Drinking Water Quality & Operational Reports

• Decrees 38924‑S & 37083‑S: standards for physical, chemical, and microbiological water parameters.

• Semi-annual Report (Annex 3): mandatory for the Ministry of Health.

• R‑0327‑2021‑MINAE Technical Manual: water allocation per use (L/person/day).