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🌍 Environmental Rules/Stormwater Management

Stormwater Management: Kaneohe vs Kapolei

How do stormwater management rules compare between Kaneohe, HI and Kapolei, HI?

Kaneohe and Kapolei have similar restriction levels.

Kaneohe, HI

Honolulu County

Heavy Restrictions

Kaneohe's watershed flows directly to Kaneohe Bay, and ROH Chapter 43 Article 11 tightly restricts non-stormwater discharges to the city's storm sewer system.

View full Kaneohe rules β†’

Kapolei, HI

Honolulu County

Heavy Restrictions

Kapolei properties tied to the city's separate storm sewer system are regulated by ROH Chapter 43, Article 11, which bars non-stormwater discharges and enforces MS4 water quality standards.

View full Kapolei rules β†’

Key Facts Comparison

FactKaneoheKapolei
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Highlighted rows indicate differences between cities.

Kaneohe FAQ

Can I drain my pool into the street?

No. Chlorinated pool water is a prohibited non-stormwater discharge and must be dechlorinated and managed per DPP guidance.

Is fertilizer runoff regulated?

Yes, fertilizer and pesticide runoff to the storm drain can be cited, especially given Kaneohe Bay's nutrient-sensitive coral.

Kapolei FAQ

Can I pressure-wash my Kapolei driveway into the gutter?

If the runoff carries soaps, oils, or other pollutants to a storm drain, it is a prohibited non-stormwater discharge under Sec. 43-11.22.

What is the MS4 system?

The MS4 is the city's municipal separate storm sewer system, which carries untreated stormwater to coastal and stream outfalls under federal and local water quality rules.

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